Arduino jobs

...discussion must highlight any deviation from theory, quantify experimental error, and comment on propulsion system performance implications. Acceptance criteria 1. Thrust and torque repeatability within ±3 %. 2. RPM measurement error <1 %. 3. Report delivered in PDF plus source (Word or LaTeX). 4. All figures readable in grayscale and colour. Any modern data-acquisition suite is fine—LabVIEW, Arduino with Python, or similar—so long as calibration steps are described....

I’m building a mobile robot and need an ESP32-based physical hand-held controller that can drive it wirelessly via Wi-Fi or Bluetooth. The only actions the robot must respond to are Forward, Backward, Rotate Left and Rotate Right—no arm control for now. Here’s what I’m looking for: • Clean, well-commented firmware for both the remote unit and the robot side, written in Arduino IDE or ESP-IDF. • A lightweight, low-latency communication routine that keeps the link alive and automatically reconnects if the signal drops. • Pin mapping and a simple wiring diagram for the buttons, power, and any status LEDs you recommend. • Quick setup notes so I can flash the code and verify that each button triggers the correct motion. I’ll con...

...and the sizes will be hard-coded for now; no live UI or font selection is needed. I just want to see smooth, accurate motion, clean cream extrusion, and clearly legible lettering in an “Elegant” style. Here’s what I need from you: • Mechanical design and parts list for the XY frame, rails, carriage, and syringe mount, all sized for an A4 sheet of paper. • Electronics schematic and firmware (Arduino + GRBL, or any open-source control stack you prefer) that drives two XY stepper motors plus a third actuator for the syringe. • G-code or equivalent motion file that traces the word in four distinct scales. • A short demo video showing the machine writing the word on paper, followed by source files and build instructions so I can replicate...

I need a detailed sketch for an automatic plant watering system tailored for indoor plants. The system will draw from a water tank and incorporates a safety shut-off mechanism. Key Components: - Sensors - Arduino/Raspberry Pi - Water pumps - Safety shut-off Ideal Skills and Experience: - Experience with Arduino/Raspberry Pi - Knowledge of sensor integration - Familiarity with water pumping systems - Ability to create clear, functional system sketches

...battery rather than USB or a rechargeable cell, so every milliamp you can save counts. Here is what I expect when we are done: • A compact PCB layout that fits the rough footprint of correction tape (around 95 × 25 × 15 mm; I can adjust a little if it helps with antenna clearance). • Complete schematic, Gerbers and a concise BOM with readily available parts. • Firmware built with ESP-IDF or Arduino-ESP32 that can send and receive short text payloads over Wi-Fi, display them (even a simple OLED/LED matrix is fine), and confirm delivery. • Low-power strategy outlined and demonstrated so the device can idle for weeks on a fresh battery yet wake instantly for message activity. • A 3-D printable enclosure file that shows how everything is...

I already have a universal BLDC ceiling-fan driver PCB running perfectly from mains power; what it lacks is an Arduino brain. My goal is to plug an Arduino (Uno, Nano, or whichever you prefer) into the existing driver so I can: • adjust fan speed across its full range, • reverse the direction on command, and • set on/off timers, all through a small set of physical push-buttons mounted near the fan. What I need from you is a clean, well-commented sketch plus a minimal wiring diagram that shows exactly where every button, resistor, and logic-level signal ties into the driver board. If any level-shifting, opto-isolation, or triac/FET gating is required, please spell that out and include the component values. Debounced button handling and non-blocking timer ...

I have an Arduino-based setup that drives DC motors and I need clean, well-commented code that handles speed control, direction changes, and automated stopping. The sketch can be written from scratch or built on what I already have; either way, I want the final file to compile error-free in the current Arduino IDE and be easy for me to tweak later. Here’s the core logic I’m after: • Speed control – PWM or another reliable method that lets me adjust RPM smoothly from zero to full throttle. • Direction control – forward/reverse switching triggered by a digital input or a serial command. • Automated stopping – when a limit switch, sensor, or timed event is triggered the motor should brake or coast to a halt, then wait for the ne...

...UART communication * Power requirements * SIM/network requirements * Antenna connection * Power supply/current requirements * GPIO requirements * Electrical protection If integrating the cellular modem directly onto the main PCB is not advisable, the engineer may recommend a modular approach. ⸻ 8. Industrial Reliability This is intended to be a real commercial RO plant controller, not a hobby/Arduino development board. The PCB should therefore be designed with consideration for: * Electrical noise * Inductive loads * Voltage transients * Field wiring * Proper grounding * Signal integrity * Separation of noisy and sensitive circuits * Appropriate creepage/clearance * Connector reliability * Serviceability * Long-term operation * Manufacturability The engineer should identif...

...Design for Arduino UNO Q 4GB I am looking for an experienced mechanical/CAD designer to create a production-ready custom electronics enclosure for a commercial monitoring product called the PeafowlPro Hub. The initial Hub will be built around an Arduino UNO Q 4GB and will not include a display or additional internal expansion boards. The goal is a compact, clean, professional enclosure suitable initially for FDM 3D printing, while keeping the design practical for future manufacturing. Design Requirements The enclosure should be a white, two-piece design consisting of a front/top cover and rear/base housing. A snap-fit assembly is preferred, although the designer may recommend a better serviceable fastening method if necessary. The enclosure must be designed around the...

I’ve built a working prototype around an Arduino Uno and have the code written in the standard Arduino programming language. What I lack is confidence: every time I want to tweak the sketch or track down a bug I’m unsure of the exact steps to re-compile, upload, and verify the fix across multiple boards. I need you to connect to my Windows PC through a screen-sharing tool (TeamViewer, AnyDesk, or whatever you prefer) and walk me through the complete workflow in real time. The focus is on debugging my existing code, not on creating a brand-new project, so we’ll open the current sketch in the Arduino IDE, explore the serial monitor for diagnostics, and practice making small edits, compiling, and flashing the Uno until I can repeat the process on my o...

...checking a screen. Right now I’m committed to environmental sensing/display as the primary function; which specific parameters we track (temperature, humidity, air-quality or others you suggest) and how we map them to colour shifts, patterns, or even a numeric read-out is still open. I’m keen to hear creative approaches that keep the interface intuitive at a glance. I picture a compact board—Arduino, ESP32, Raspberry Pi Pico or a similarly low-power microcontroller—driving addressable LEDs. It should run from a single USB-C or battery pack, sleep efficiently when conditions are stable, and wake instantly on changes. A simple calibration routine and a way to tweak thresholds via serial or Bluetooth would be ideal. Deliverables • Schematic and full B...

...the positioning accuracy must sit in the high-precision range (fractions of a millimetre, minimal backlash). The scope is focused on the full mechatronic package: • Kinematics and structural design in CAD (SolidWorks or similar) optimised for a tight workspace. • Motor and transmission selection able to deliver consistent force without stressing the switch hardware. • Control electronics (Arduino, STM32, or equivalent) and firmware that let me feed in a schedule of press cycles over serial or Ethernet. • End-effector design shaped to reach toggles no larger than a fingertip while avoiding neighbouring components. • Repeatability test protocol and documentation proving accuracy across at least 10 000 cycles. If you have previous ROS integration o...

...price lookup, transaction publishing and balance reconciliation. Automatic offline mode with encrypted local card balances and pending transactions. Automatically sync transactions when connectivity returns. Reliable handling of reboot, Wi-Fi/MQTT disconnection and power interruption. Configurable tap calibration, pricing, GPIOs, MQTT credentials, etc. Deliverables Complete buildable ESP-IDF or Arduino-ESP32 source code Wiring diagram for flow sensors, solenoids/drivers and MFRC522 Short README for flashing, configuration, calibration and testing Working demonstration on my current ESP32 development board. I will provide the existing MQTT topic/payload structure. Looking for someone experienced with ESP32, MQTT, RFID, flow sensors and concurrent/non-blocking firmware....

...for a DIY solar tracker (ESP32 mainboard) PROJECT DESCRIPTION I'm developing a solar tracker (2-axis, azimuth + tilt) controlled by an ESP32, with a touch TFT screen, SD card, RTC, angle sensors, control of 2 DC motors (azimuth/tilt), management of 48V/24V power rails, and various sensors (wind, LDR, battery voltage, temperature, gyroscope). The firmware is already developed and functional (Arduino/ESP32 code). A KiCad library of the modules used has already been prepared (schematics + footprints + 3D renders per module). The full GPIO/I2C mapping is documented and ready to share. I'm looking for a freelancer to design the complete electronic schematic and route the PCB (main board, built around the ESP32), based on the material already provided. WHAT IS ALREADY PR...

...wireless sensor nodes with proximity, motion, and vibration sensing Long-range sub-GHz (LoRa / SX1262) communication with GPS-based time synchronization A cellular (LTE) gateway node that publishes to our cloud over MQTT Weatherproof (IP65) field-ready enclosures with validated power and RF performance Strong experience required with Embedded C/C++ for ESP32-S3 and nRF52840 (RAK WisBlock) in the Arduino framework LoRa radio work on the SX1262 (RadioLib or similar), including RF tuning Sensor integration over I2C/UART/GPIO (PIR, accelerometer, GPS) Cellular modems (SIM7600 / LTE) and MQTT Li-ion / LiPo + solar charging design and validation Antenna matching and VSWR validation (NanoVNA or antenna analyzer) Implementing device AES-128 encryption Clean documentation: traceable BOM...

...the design and development of electronic projects. The project may involve circuit design, Arduino, ESP32, microcontrollers, PCB design, Proteus simulation, firmware development, troubleshooting, and testing. Requirements - Circuit and schematic design - Arduino / ESP32 development - Microcontroller programming - PCB design - Proteus simulation - Embedded systems and firmware - Electronics troubleshooting - Clear technical documentation The selected freelancer should be able to understand technical requirements, propose an efficient solution, develop the required hardware/software, and provide all necessary project files and documentation. Please include examples of previous electronics, Arduino, ESP32, PCB, or embedded systems projects in your proposal. Deliv...

## Earn Commission on Every Online Course Enrollment – No Sales Limit We are looking for **freelance sales partners / affiliate marketers** who can generate genuine paid enrollments for our online technical courses. Our courses cover practical and career-focused topics including **VLSI, Embedded Systems, IoT, Arduino and related electronics/engineering skills**. **Course Catalog:** ### How You Earn You will receive a **commission for every confirmed paid enrollment generated by you**. There is **no fixed limit on earnings** — the more students you enroll, the more you earn. We can provide you with: * A unique referral/tracking link * Course information and promotional material * Marketing creatives and content ideas * Enrollment/sales tracking

...alarm is sounded until the level reaches low. If the level does reach low before 30 seconds the pumping should stop.  The pumps will stop when low is detected.  To give even loading of the pumps they are to be used alternately, e.g. if on one pump cycle P1 starts first and P2 is the ‘back up’ then on the next cycle P2 will start first and P1 is the ‘back up’. The system is to be controlled by an Arduino microcontroller. The pumps can be mimicked by LEDs*. Switches can be used to represent the LOW and HIGH transducers. The program should inspect the input switches at regular intervals and take appropriate action. *If you chose to use the UnoArduSim then you can use its motor simulators to model the two pumps. A further enhancement would be to use a p...

...Firmware development * Product prototyping ## Portfolio Requirement Please provide at least 3 relevant previous projects. I am particularly interested in seeing: 1. BLDC/servo/encoder/motor-control projects 2. Battery-operated ESP32 or similar products 3. Custom PCB projects 4. Local Wi-Fi/web-controlled devices 5. Robotics/industrial automation products 6. Complete hardware + firmware products Arduino LED/sensor projects alone are not sufficient for this project. ## Important I am looking for an engineer who can take responsibility for the **complete electronics and embedded control system**, rather than only designing the PCB. The final objective is a reliable working product that can subsequently be manufactured in quantity. Please include in your proposal: * Your re...

The task is to design a...data proving the unit can reliably distinguish a good head from one “en corto” under real-world conditions. Acceptance criteria 1. Head with deliberate short is detected in under 5 seconds. 2. Healthy head shows impedance spread within ±10 % of documented Epson specs. 3. All build files compile and flash without error using free toolchains (Arduino IDE, PlatformIO, STM32CubeIDE or similar). You may choose the microcontroller platform—Arduino, ESP32, STM32 or another—as long as it is easily sourced. Keep the firmware well-commented so I can adapt thresholds later. If you have tackled similar piezo printhead diagnostics before, please mention it when we start; otherwise, a brief outline of your proposed measure...

...shave latency and jitter to the minimum the ESP32 can offer while still keeping the logic straightforward to maintain. • Persistent tuning data. Two items—ignition timing adjustments and pulse-duration settings—must survive resets by living in the ESP32’s NVS/EEPROM as simple key-value pairs. Stubs for future serial or BLE tuning would be a plus. • Clean, well-commented code targeting ESP-IDF (Arduino layer acceptable if it doesn’t compromise latency) and a concise README explaining how to build, flash, and modify the stored parameters. having a working flow menu system would be nice, but if it could allow the OTA firmware updates, that would be even better. but i think with LVGL, there is not enough room. Deliverables 1. Source in a Git...

I already have a fully-working Arduino sketch that turns my CYD ESP32-2432S028R into a local MQTT server. What’s still missing is a front-end: I want those variables to be editable directly from the board’s 2.8-inch touch screen using LVGL. Here is what I need you to add or change: • Build an LVGL-based interface that opens in a Dark theme and spans multiple screens I can swipe or navigate between. • Include button inputs for quick on/off style actions and text input fields for numeric or string parameters. • When a value is changed on screen it must immediately update the corresponding variable in the sketch and publish the new value to the same MQTT topic; inbound topic updates should refresh the UI as well, so everything stays in sync. • Th...

... Reverse, Stop for the drive motor and On/Off for the brush motor. A simple connection/battery indicator would be a bonus, but the core need is reliable, basic on/off control. • Firmware side: clean Arduino-style code for the ESP32-C3 that listens for those commands and toggles two H-bridge outputs without ever stalling the main loop. Use my current sketch only as a pin-mapping reference; the new version must avoid the loop-blocking issue and smooth out the occasional motor glitches. Deliverables - Android Studio project with source, ready to build and install. - PlatformIO or Arduino IDE project for ESP32-C3 with clear comments. If you’re comfortable with Bluetooth, ESP32-C3, and simple motor control, this should be a fast, clean job....

Objective Set up a robust GitHub-based DevOps system to automate firmware development, testing, and deployment for Arduino, STM32 and Nordic controllers. How to since we’re starting from scratch, we need help to design the GitHub architecture and repository structure. It is required the initial architecture & planning document to mapping out how the GitHub setup will work before building it defining repositories, CI/CD stages, runners, scripts, and integrations so the system is efficient, scalable, and fits our firmware workflow. The freelancer also must prepare a CI/CD project document outlining the proposed pipeline stages, tools, environments, and automation steps. We can then review it and add our specific details so we can finalize the plan before implementation ...

Hi, I have a simple circuit made in Tinkercad that I need converted into a PCB ready for manufacturing. The circuit is basically a constant-current source with a relay, controlled by an Arduino Nano. The Nano itself will also be mounted on the PCB. The design is really small and only has around 12 through-hole main components: 1 Arduino Nano 2 MOSFETs 6 resistors 1 capacitor 1 DPDT 8-pin relay 1 diode It has 2 power supplies, 12v and 30v. I’ll provide the Tinkercad project link, schematic and component details. I need someone to create the PCB layout, route the copper traces, use the correct footprints/hole sizes, and provide the manufacturing files so I can order the PCB and solder everything myself. It should be a small and straightforward PCB job.

...looking for a Mechatronics / Robotics Engineer located in Massachusetts for a long-term collaboration on physical technology prototypes. The first priority project is a Smart Hot-Bar prototype. I need help with: - Mechanical and CAD design - Electronics and sensor integration - Temperature monitoring and heating control - Weight/load-cell sensing - Touchscreen/display integration - Arduino, ESP32, Raspberry Pi, or similar systems - Wiring, controls, prototype assembly, and testing After the first project, I would like to continue developing robotics and other smart hardware projects, including flexible/soft robotic mechanisms, movement, gripping, sensors, and control systems. I’m looking for someone who can work across mechanical design, electronics, mecha...

...cumbersome. Ideal Skills & Experience: - Experience in bag design and functionality - Knowledge of lighting integration in bags - Creative design skills for user-friendly functionality Please share your portfolio and relevant experience. Parts list Electronics Part What it does Approx. price 5V USB RGB LED strip Lights the inside $5–10 Small USB power bank Powers everything $10–15 Arduino Nano Controls the lights/sound $4–8 DFPlayer Mini Plays your sound file $3–5 Small 4Ω speaker Plays the sound $2–5 Magnetic reed switch Detects when bag opens $1–3 Small magnet Activates reed switch $1 5V RGB LED controller Optional color control $3–6 MicroSD card Holds sound files $4–6 Jumper wire Wiring $3&ndas...

...professional design/review * ESP32-S3 hardware * Ethernet PHY / magnetics / W5500 or similar * IEEE 802.3af PoE * isolated power * USB 2.0 * 13.56 MHz NFC/RFID reader design * RF matching/layout * precision ADC / bridge sensors / load cells * mixed-signal PCB layout * switch-mode power supplies * PCB DFM / first-article bring-up A PCB assembler/operator or someone whose experience is primarily basic Arduino PCB layout is unlikely to be suitable for this review. ### When applying Please answer the following in your proposal: **1. Will you personally perform the engineering review, or will the work be passed to somebody else?** **2. What relevant experience do you have with PoE, Ethernet magnetics/PHY layout, NFC/RFID at 13.56 MHz, and precision analogue/ADC design? Please be ...

...LoRa, and GSM/4G communication all function and report correctly to a test server/dashboard Display shows accurate real-time status and diagnostics Documentation is complete enough for field commissioning without back-and-forth IP terms: All schematics, firmware, and design files produced are work-for-hire and become our exclusive property upon final payment. We value experience with: Embedded C/Arduino or similar, Modbus RTU/RS485, LoRa (865–868 MHz), GSM/4G IoT modules, industrial relay/enclosure design, and PCB design for field-deployed hardware. Process: We'd like to start with a small paid test task before committing to the full design and PCB....

...60062. * Calculateur Intégré : * 1er & 2ème anneau : Chiffres significatifs (Noir=0, Brun=1, Rouge=2, Jaune=4, Vert=5, Bleu=6...). * 3ème anneau : Multiplicateur (

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, etc.). * 4ème anneau : Tolérance (Or 

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). 6. Bibliothèque de Composants Professionnelle Retrouvez les composants incontournables des bibliothèques Altium / Zuken : * Actifs & Microcontrôleurs : NE555 Timer, Arduino Nano V3, ESP32 NodeMCU, Régulateur LM7805 5V, MOSFET IRF540N, Optocoupleur PC817. * Passifs & Diodes : Résistances réglables, Condensateurs, Diode 1N4007, Quartz 16 MHz, Connecteur USB Type-C, LEDs (Rouge, Verte, Bleue). * Entrées / Sorties&nbs...

I have a small desk clock with a beautiful vintage edge-lit display, a bank of mechanical relays, and an Arduino doing the time-keeping. Unfortunately my first build was amateur—cold joints everywhere, wires stuffed into screw terminals, no strain relief.... Then a housemate dropped it. A friend at a makerspace has begun soldering bulbs in the propper layout to match the display but only completed the bulbs for 1 digit. They also started a ribbon connector for the bulbs to the relays/arduino/power section. I’d like you to finish the bulbs, get them connected, then cleanup the Arduino/gps-receiver/power section so it's mounted and ready for a case. I already 3d printed the display mount. • Flawless soldering on every connection, preferably on t...

...a SIM800L red board. The wiring follows the usual guides: GPIO27 to the SIM’s RX, GPIO26 to its TX, grounds tied together, the SIM powered directly from a single 18650 cell. I’ve triple-checked every jumper and even dropped a 1 kΩ resistor on GPIO27 and a 2200 µF capacitor across the SIM’s Vcc–GND rails—still silence. I’m compiling the sketch for the standard “ESP32 Dev Module” target in the Arduino IDE and the board is on a direct USB cable to my laptop. Serial monitor shows the commands leaving but not a single character coming back. If you know this pairing well, I’m looking for hands-on guidance that quickly pinpoints what I have overlooked—whether that’s level-shifting, power conditioning, firmwa...

I’m working with a Diode Laser Board and I need a custom receiver that can plug into that setup, track the machine’s positioning in real time, and instantly flag any faults it detects. The idea is to have continuo...and BOM) for the receiver • Firmware or embedded code that handles positioning feeds, real-time monitoring, and fault flagging • A brief setup guide so I can reproduce your test results on my own bench If you’ve worked with diode-based laser controls, stepper/galvo positioning feedback, or similar high-speed data capture projects, you’ll be a great fit. I’m open to the specific toolchain—Arduino, STM32, ESP32, or something comparable—so long as the end result is stable and easy to integrate. Let me know your pref...

...under the Arduino framework. The screen only has to present a clean, simple menu driven entirely by navigation buttons. Each button will call one of four separate Arduino voids that I will drop in later; those voids handle the I²C EEPROM routines. Core requirements • Use LVGL (latest stable release) and keep the code fully contained in a single .ino with supporting .c/.h files as needed. • Design a start-up screen with four clearly labeled buttons. No dropdowns or toggles are required—just straightforward navigation buttons. • Wire the button callbacks to placeholder functions so I can paste in my own logic for: – Reading data , Display – Writing data , Display confirmation – (two additional loops I will supply) ...

I'm looking for a skilled developer to create a robot arm controlled by hand gestures. The arm's movement will be facilitated using Arduino, gyro sensors, and flex sensors. Key Requirements: - Wired control mechanism - Moderate precision and responsiveness - Primary build material: cardboard The system should involve: - Gyro sensors to detect hand rotation for base and shoulder movement. - Flex sensors to detect finger bending for elbow and gripper movements. - Arduino to process signals and control 4 servos. Ideal Skills and Experience: - Proficiency in Arduino programming - Experience with gyro and flex sensors - Background in robotics and servo control - Strong problem-solving skills - Ability to work with cardboard and design functional prototypes Lo...

I’m building an industrial-grade robotic setup and need a sharp embedded-systems mind to move the control electronics from concept to reliable hardware-in-the-loop operation. The work centres on firmware that drives motors, interprets sensor data and communicates over CAN bus or OBD-II–style diagnostics. Most of the prototyping will happen on Arduino or ESP32 boards before we freeze the design onto a custom PCB, so familiarity with Altium Designer or KiCad for schematic capture and layout is essential. Here’s how I see the collaboration flowing: • Translate high-level motion requirements into C/C++ firmware with clean, well-commented code. • Select, integrate and tune motor drivers, encoders and safety interlocks so the robot meets industrial-speed r...

...what I need you to handle: • Recommend and install a production-grade MQTT broker on the VPS, configure secure remote access (SSL/TLS and user auth) and verify message flow with Home Assistant. • Create the necessary automations/intents inside Home Assistant so each of the three assistants recognises the devices and exposes the ON/OFF plus dimming capabilities. • Supply clean, well-commented Arduino (ESP32) code that subscribes to the chosen topics and drives the relay boards accordingly. I should be able to flash the sketch, power up the module, and watch the relays respond instantly. • Run live tests with at least one virtual and one physical device to confirm that commands from every assistant reliably operate the switches and dimmers. • Provi...

...temperature sensor into an ESP32-based design and need a clean, ready-to-flash solution that covers three essentials: accurate temperature readings, an immediate on-screen display, and reliable data logging. The job breaks down into two parts. First, document the wiring so I can reproduce it quickly—pin map, I²C pull-ups, and power considerations for the 3 V rail. Second, supply well-commented Arduino-compatible code (ESP-IDF is fine if you prefer) that: • polls the MLX90614 at a reasonable interval • streams both object and ambient temperatures to the Serial Monitor (or an OLED/Nextion screen if you think that’s cleaner) • stores each reading with a time stamp to SPIFFS or a micro-SD card—your call, as long as it’s easy for me ...

...lets an ESP8266 on the Arduino platform both send and receive infrared commands for multiple air-conditioner remotes. Serial command-line interaction over USB or Telnet is all that’s required; no web or mobile interface is necessary. Core tasks • Build or adapt an Arduino-compatible sketch that scans incoming IR frames, decodes them, and logs the raw timing as well as the decoded protocol and data. • Implement a complementary routine that allows me to replay captured frames or craft new ones from the command line, then transmit them through an IR LED with correct carrier frequency and timing precision. • Structure the code so adding or tweaking protocols is straightforward—I will be experimenting with a variety of AC brands. Environme...

...needed), ESD protection, boot-cap circuitry and the standard reset network. • Break-out to one XH-JST-3 plug clearly silkscreened with the GND, +5 V and LED symbols. • Primary power supplied by USB-C 5 V rail. • Firmware that gives basic functionality: detect USB power, expose the MCU as a simple USB HID to flip the LED on or off, and keep the bootloader intact for future updates. Plain C or Arduino is fine as long as it compiles under the usual open-source toolchain. • Clear, step-by-step flashing instructions using the USB-C port. • Board outline kept minimal; aim for something that could fit inside a key-fob enclosure. Deliverables 1. EasyEDA project files: schematic, PCB, libraries. 2. Gerber, drill, pick-and-place and BOM exports rea...

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...(no mobile app requirement) served directly from the ESP32 • Features enabled: Scheduling, Dimming control, Remote access over the internet/LAN • Clean, responsive HTML + CSS + JavaScript (vanilla or lightweight framework) • MQTT support or lightweight REST endpoints are welcome if it simplifies remote control, but not mandatory Deliverables 1. Well-commented ESP32 source code ready for Arduino IDE or PlatformIO 2. Front-end files (HTML, CSS, JS) compressed for onboard SPIFFS/LittleFS upload 3. Circuit diagram showing the GPIO pinout for the relay/triac and dimming hardware 4. A README that walks me through flashing, initial Wi-Fi setup via captive portal, and how to expose the interface securely (HTTPS or reverse-proxy instructions are fine) Accept...

I have an ESP32-D dev board and three unused PAA5100JE optical-flow sensors. I only need to bring one online first, confirm it streams clean motion data, then replicate the solution for the other two. What I already have • A sketch that compiles but never sees the sensor • All parts on hand, breadboarded and powered • Standard Arduino IDE installed on my end for quick testing What I need from you within the next couple of hours 1. Corrected or freshly written code that initializes the PAA5100JE, verifies it over SPI, and outputs X/Y delta values on the serial monitor at 115 200 bps. 2. A clear wiring diagram (hand-drawn is fine if neat, Fritzing/KiCad even better) that shows every pin between the ESP32-D and the sensor, including power, ground, CS, MI...

I want to build a small-scale hybrid renewable power system—solar panels, wind turbines and tidal generators all working together—inside SimulIDE, driven solely by an Arduino sketch. The goal is purely educational: I need to show that combining these three sources is feasible and to let students see exactly how each part talks to the others. Because of that, the spotlight is on component interactions rather than chasing perfect efficiency or bullet-proof stability. Your task is to create the full SimulIDE project and the matching Arduino code so that: • the three virtual sources feed a common DC bus, • the Arduino reads representative voltage/current sensors for each source, decides which source should be prioritised, and controls simple switc...

...with an ESP32. The goal is to have the ESP32 handle Wi-Fi connectivity, pull motion data from the PAA5100JE, and give me software control of several GPIOs so I can drive LEDs and switch power to an additional sensor on command. Here’s what I need from you: • An advised pin map and any level-shifting guidance for a clean, noise-free hardware hookup. • Well-structured firmware (PlatformIO or Arduino-IDE friendly) that: – Initializes the PAA5100JE and streams its measurements at a steady rate. – Publishes those readings over Wi-Fi—MQTT, HTTP, or WebSocket is fine, as long as it’s fast to implement and stable. – Exposes simple commands or a REST endpoint to toggle GPIOs for the LEDs and sensor power rail. • Clear doc...

...board should accept a compact solar cell and scavenge ambient 2.4 GHz energy (WiFi harvesting) to keep the system alive for months without manual charging. Core expectations • Electronics: schematic, component selection and PCB layout optimized for sub-100 µA standby, including the WiFi/BLE SoC, power-path management, solar MPPT, RF-to-DC harvester and battery protection. • Firmware: ESP-IDF/Arduino or similar code that boots, joins WiFi or BLE, pulls a JSON payload, drives the E-Ink controller, then returns to deep sleep. OTA update support is desirable. • Prototype: one fully assembled board plus BOM and gerbers so I can order more units. Acceptance criteria 1. Board refreshes a 2.9-inch E-Ink display from a cloud endpoint. 2. Average current in...

...accept both induction coils and standard gas burners so I can switch energy sources as required. From dough portioning and pressing to cooking, puffing, and neatly stacking, every step should run hands-free once ingredients are loaded. To keep the budget realistic, I’m open to clever use of off-the-shelf components, 3-D-printed parts, recycled food-grade stainless, or low-cost electronics such as Arduino or Raspberry Pi for control and sensor feedback. Just make sure anything in contact with the dough is food safe, easy to clean, and remains rigid over time. Deliverables I expect: • CAD drawings with assembly instructions • A complete bill of materials showing per-item cost and total staying below ₹10,000 • Control schematics and firmware source code ...

...service—written, tested and ready to run as soon as possible. Here is what I expect to receive: • Raspberry Pi service (Python, Node-JS or similar) that – discovers or registers ESP32 units, – maintains simultaneous connections, queues messages and forwards them over the WebSocket tunnel, – handles reconnects, heart-beats and basic security (token or key-based). • ESP32 firmware (Arduino IDE or ESP-IDF) able to – connect via Wi-Fi to the router, – subscribe to commands from the Pi and publish its own status/data, – keep memory and bandwidth light enough to scale to ~100 devices. • Simple config file or script so I can point the Pi at a different web-server URL or change Wi-Fi credentials with...

...hardware/electronics building experience. We're looking for a freelancer who can act as a hands-on mentor for the hardware and coding side, not just a builder — someone who will walk us through each step and explain it, since we're complete beginners in this specific area. Phase 1 scope (this posting): Guide us through wiring a basic glove prototype: flex sensors + IMU connected to a microcontroller (Arduino/ESP32 or your recommendation) Get the hardware reading clean, reliable sensor data Basic coding to turn that raw data into recognised output for a small set of signs (a handful of Arabic Sign Language letters/words as a starting vocabulary) Teach us why each step works as we go What we're looking for: Electrical/embedded systems engineer experienced w...

...buttery smooth, and the screen should raise clear visual and audible alarms whenever a user-defined threshold is crossed. Because this will live on a busy helm, touch interactions have to be glove-friendly, fonts readable at a glance, and refresh rates stable even when multiple PGNs flow in. You may pull any open-source libraries you like, but the final package has to compile in PlatformIO or Arduino IDE and be mine to modify. It would be beneficial for the coder to have or have access to NMEA2000 simulation or devices to test their code. Deliverables: • Documented source code for the ESP32, ready to flash • GUI assets + the “easy edit” method you implement (templates, config file, or mini editor) • Short build guide that covers wiring, library insta...