Transmitter jobs

Hi Bulent V., I noticed your profile and I see that you created a EV1527 based RF Receiver PCB. I am looking for a EV1527 based 433Mhz Transmitter schematic (preferably through EasyEDA) that I can use through third party websites like JLCPCB. The purpose is similar to creating a remote like the Amazon link Let me know if you've a ready-to-use schematic available including the antenna positioning in the PCB. Thanks

Hi Bulent V., I noticed your profile and I see that you created a EV1527 based RF Receiver PCB. I am looking for a EV1527 based 433Mhz Transmitter schematic (preferably through EasyEDA) that I can use through third party websites like JLCPCB. The purpose is similar to creating a remote like the Amazon link Let me know if you've a ready-to-use schematic available including the antenna positioning in the PCB. Thanks

Need to build the entire OFDM and OTFS system with Transmitter Receiver and Channel. OFDM channel should only encounter with delay and no doppler. OTFS system should have both delay and doppler. I need 2 different code, with same parameters and a code with coexisting both in 1.

Want a MATLAB program in 5g tool box. First to simulate the OMA (Orthogonal Multiple Access) and NOMA (Non OMA) technique based transmitter and receiver. Then simulate the both transmitter and receiver on different channel like BSC, BEC, PEC & AVC. After that analyse the performance by different types of measures BER, SNR, Channel Utilization, Spectral Bandwidth and Latency.

Typically an antenna consists of an arrangement of metallic conductors ("elements"), electrically connected (often through a transmission line) to the receiver or transmitter. Antennas act as transformers between conducted waves and electromagnetic waves propagating freely in space

Hello, We intend to find somente who have already develop a pH and electrical conductivity transmitter, in order to communicate direct to these sensors and convert its signal do modbus rtu/RS485. These sensors are used for liquid analysis (wastewater application). Best regards

By using matlab coding or simulation

Person to build and assembly circuit board (PCB). Project: Build UHF Transmitter(s) Will provide Gerber files, , schematics

I am looking for someone to install a Wi-Fi point to point and access point. I have the kit but haven’t had a chance to install. Fairly simple POE to transmitter, receiver and access point. Happy to pay a fixed cost or T&M and show kit bought. If anything missing will also pay. Thanks

I am looking for someone to install a Wi-Fi point to point and access point. I have the kit but haven’t had a chance to install. Fairly simple POE to transmitter, receiver and access point. Happy to pay a fixed cost or T&M and show kit bought. If anything missing will also pay. Thanks

Hi, I am working on the making prototype of an ultrasound sensor. The project includes three evaluation boards to capture ultrasound data from the body through the computer. This project includes the transmitter, analog front end, and FPGA board. I need someone who is a professional in FPGA engineering who could help me and supervise me.

to develop a producer/consumer application. Both the C programming language and any distribution of the Linux operating system are to be used. pipe ,fork and exec system call should be used for communication between receiver and transmitter

I want to create a RF transmitter for extremely low frequencies to transmit audio through radio frequency.

Description:- Given scenario - The system has encoded laser (IR) Transmitter and receiver powered by 5V battery bank. Requirement - Project scope includes a hardware system of laser transmitter & receiver which must be powered by 5v battery, The laser receiver must be able to detect the transmitters unique identity through its encoded stream of ray when ever the laser points on it and receiver must have a small LED triggered once laser transmitter is pointed on it. This shall be demonstrated using Serial PORT As well The laser system must work in day light as well as night condition in Outdoor & indoor condition. The system must work in Direct sunlight. The Laser system working distance range is 100FT.

My project is about designing and implementing a 6 channel RF - Arduino transmitter and receiver. The channels will be: # 1, 2 and 3: Simple 1 or 0 (signal/no signal), #4: Microphone (analog or digital mike), #5: Square Wave, 20 to 10.000 Hz and #6: Arduino Gyroscope board signal (MPU6050 or similar). A good reference for it is: Thank you. Julian

HART pressure transmitters for configuration via a distributed control system (DCS) or HART communicator. HART pressure transmitters are compatible with the Highway Addressable Remote Transducer (HART) communication protocol which is the most popular standard used with smart field devices by the process control industry. HART functionality enables the transfer of pressure transmitter data via an AC digital signal which uses the 4-20mA analogue output signal as a carrier, thus eliminating the need for extra wires and connectors.

...to using a barcode scanner attached to the device to scab for the same. 2.1. check the database for the name of the itemcode scanned and display the item name so it can be weighed 3. As the items of that item code are kept on the weighing scale the weight scale shows the weight we need to get the weight scale data from the weighing scale in real time. ( the weighing scale has a bluetooth transmitter which transmits the weight data) 4. After all the items are kept on the scale , once we click on a button we need to capture the final weight and Display another 1D barcode which uses a CONCAT function which will report the item name and the weight with a comma in between (Example item code - "2277744838" weight of that item is 223.5kgs then the output barcode must sho...

...transmission when the buoys are still inside water. The antenna should be ejected outside the water level after this 2 minutes. The mechanism for ejection will be designed (and billed) separately. But the command alone for ejection should be designed as part of this project. C. The transmission has to be encrypted and the passcode customisable - basically you have to be able to put a password in the transmitter either through bluetooth or wifi or simply punching in some buttons. D. The data should be sent over LoRa every 5 seconds or 10 seconds or 30 seconds or 1 minute (customisable).The entire system should be very light weight (not more than 60 to 70g without battery). E. The location thus received from the buoys should be tracked on a computer/ Tablet (in the mother ship) on ...

I'm looking to design an RF PCB board. - Frequency = 1.4994347 GHz - Power supply input (2000v, 1amp) DC. - Spark Gap. - Transmitter circuit (Capacitors & inductors). - Antenna matching network (Capacitors only). - Antenna outlet (Coaxial cable connection).

I need a break beam sensor switch mounted on two separate boards for the receiver and transmitter to be mounted approximately 40 mm to 300mm apart

**** GENERIC BIDS WILL BE AUTOMATICALLY DELETED **** You must have 2 CC1310 modules atleast, please clarify this in your proposal 1 transmitter , many receivers/nodes Transmitter send message with MAC as payload, All nodes recieve the message but ignore if payload MAC doesn't match Transmitter is attached to arduino with serial TX/RX, every uart output from arduino will be redirect to cc1310 radio, you must specify the format, also every message recieved by transmitter redirect to serial TX Pretty simple logic , attached document where I explain all logic states and reference code

I need a professional for a wireless data transmitter and receiver over a short distance of less than 5 meters using RF technology.

...Reflex Level Gauges Tubular Level Gauges Flow Switches Safety Relay Electrical selector switch Push Buttons Signal Conditioners & Isolators Smart Powerline Transducers Conductivity Level Switch Hydrostatic Level Transmitter Capacitance Level Transmitter Magnetic Float Level Transmitter By-pass Level Transmitter Vibration Type Level Switch Rotary Paddle Level Switch RF Capacitance Level Switch Magnetic Float Level Switch Cable Float Level Switch Optical Level Switch Side Mounting Level Switch Thermal Dispersion Level Switch DIN Rail Temperature Transmitter Head Mount Temperature Transmitter Timer Frequency to current converter Pressure Switch Temperature Sensors Temperature Indicators Globe valves Bellow sealed Safety Relief Valves Drain valv...

Visible light communication (VLC) is one of the most disruptive wireless techniques for super-rapid information exchanges in the next generation communic...communication (VLC) is one of the most disruptive wireless techniques for super-rapid information exchanges in the next generation communication networks. This project will design and prototype a VLC system based on the platform OpenVLC (), which is an open source, flexible and low-cost VLC platform. A major objective of this project is to understand how a pair of outdoor VLC transmitter and receiver should adapt in order to accommodate different modulation schemes and weather conditions. Towards this objective, the following two areas will be optimized: Adaptive Coding and Modulation (ACM) and Constellation Shaping.

Job to do: Create project (with elements assembly) of electromagnetic field transmitter. It should produce strong electromagnetic field with desired frequencies (produced by external device) and desired power. It is NOT made for communications purpose. Note that it will have to transform DC from power supply to AC on coil output. Graphic scheme is attached as a file (elements placement can be changed). order is on my side obviously. Device inputs: - power supply: 19.5V DC 6.15A (11.8A if necessary) - signal input: 1-60V AC, 1-5mA, 1Hz-1MHz, square wave - power rotary switch: regulate Amperes (A) inside magnetic coil to achieve 5-60W, step every 5W Device outputs: - red or green power on diode, when device is working - magnetic coil output: 10-20V AC, frequency exactly

I am trying to code a digispark attiny 85 to a HC-06 bluetooth transmitter and get the temperature from a dallas dsb1820. I found an instructable I am not having luck modifying the .ino file to work with the digispark. I am working with Arduino 1.8.19 on windows 11. I am having issues modifyng the code for the digispark. I need someone to modify it and debug so I can test it out

I need a esp32 coded to accept IR hex commands via a IR receiver and pass those command through without any delay but if a specific command is read then a different IR Hex code is sent out through a IR transmitter.

we need to design simulink model for transceivers need frequency carriers for up-and down-conversion of the baseband signal. Therefore, a frequency synthesizer is necessary, which increases the complexity and power consumption of the system. IR-UWB, on the other hand, directly modulates the ...hand, directly modulates the information bits with extremely short-duration pulses. Since the pulse occupies a large bandwidth (no less than 500 MHz), it can be directly emitted without using carriers or any intermediate frequency (IF) processing, greatly reducing the system complexity and the overall power consumption and size [22]. A capsule endoscope communication system includes an inbody transmitter and an on-body receiver with its corresponding blocks for synchronization and base-band pr...

Here are the files to support the contest: https://www.freelancer.com/contest/Determine-Protocol-of-an-Khz-IR-Transmitter-waveform-2127626/ Please do NOT BID here!! Please submit your details to the Project, Garanteed 100 USD created!!

Hi There, I hooked up a logic Analzer to one side of an Infrared LED for a remote that controls AC. files are located in Project (do NOT bid on it, enter here): https://www.freelancer.com/projects/electrical-engineering/Logic-Analyser-Files-support-Contest/proposals I pressed a couple of buttons and captured several traces (see Excel file). I am trying to identify the Encoding used (Manchester, etc), How many bit/bytes, what could be message structure be, etc You can see that everything between the first and second verticle line remains fixed when I press the buttons. When I press a key on a remote control I generate the following attached logic trace on pulkseview The carrier frequency is 36.3Khz. Tried to use sigroc IR encoder to figure out what protocol is is , but no luck. I have...

I have connected two raspberry pi’s together through the Serial ports (TX connected to RX and grounds connected to each other). I have a transmitter program on the transmitting PI and a receiving program on the receiving PI (both programs coded in C). The code is from this tutorial: When I run both programs and attempt to send a jpg file, the transmitter appears to transmit the entire file without issues. The receiver PI picks up the first 64 bytes and then quits. I’ve tried different file types with the same problem. I need help from a programmer to review my code and help me to get it working. I could have some settings issue too. You must have your own raspberry pi to help with this project, and will require

Description: stm32(transmitter)-->nRF24-->stm32(receiver)-->sim900-->Internet * Transmitter is in sleep mode and every hour wakes up and receives temperature from BME680 (The embedded RTC on stm32g071rb has to be used it) *Then, it sends via nRF24 the temperature and the time (in form Day/Month/Year/Hour/Minute) to the receiver and returns in sleep mode *The receiver is in sleep mode and when a package from the transmitter is received, it wakes up to receive it and then it sends the received temperature and time via sim900 on a website (.php) Deliverables: *2 codes (1 for transmitter and 1 for receiver) *Schematic for the modules * Verification with measurements (power consumption) that the sleep mode works Deadline: There isn’t any deadline

I need 4-20mA signal isolation circuit with minimal components and cost. 4-20mA signal coming from the sensors (transmitter) and sampling by an ESP32.

...doorway it won’t close, and resistance monitoring on the motor so the door reverses direction if it gets blocked. And momentary switches on the door so it stops at the end of travel. I have 2 LoRa modules (sx1278) with antennas 1 L298N motor driver, I planned to have one side power the door motor and the other side to provide the 12v needed for my solenoid. I have an arduino nano for the fence transmitter, which will also have a hall-effect sensor and a 5v solar panel to maintain power. The main door will use a generic solenoid and motor, an LCD screen would be awesome to display any messages of errors, open fence, etc. For this I have an Arduino Mega 2560...

Build a simple PCB that can house the following module: ESP32-S3-WROOM-2-N32R8V Has a standard IR transmitter connected to one Digital output pin (not SMT but through hole connector where the IR transmitter can stand up on PCB. Capable of accepting 156 - 3.3 V DC as input. SPI or I2C connector to accept a Temperature/Humitidy sensor Deliver the following files: Eagle PCB Eagle SCH BOM (CSV or Excel format) You can get the ESP32 S3 module here:

CAN YOU DEVELOP A SYNCHRONIZED DAB+ TRANSMITTER... BEING GPS SYNCHRONIZED?°?!?

SDR TRANSMITTER OF A FM BROADCAST SOLUTION BEING A MULT IPLE STATION TRANSMITTER... USING JUST ONE SDR DEVICE FOR MULTIPLE CARRIERS... - USING RDS AND STEREO... I WANT TO GENERATE 200 CARRIERS.... LIKE BROADCAST 200 RADIO STATIONS SIDE BY SIDE ... USING ONE SDR... WHICH ONE I BUY?!?!? USRP2?!?! OR HACK-RF?!?!!? JUST TELL ME HOW WE NEGOTIATE!

We need a project done in Morse code encoder and decoder in VHDL. Our project contains 2 parts a transmitter and receiver. The transmitter part receives the text(ASCII) from the PC(user) via UART receiver and transmits the text to morse code encoder(converts text to morse code). The morse code pattern then is sent to an led. Dot(.) corresponds to LED on and dash(-) LED off. The receiver part has a photo diode which reads the blinking of the led(morse code) and data is transmits to Morse decoder where it is converted back to ASCII. The converted ASCII is then transmitted to end user PC for display. We have already designed the top level top level block diagram. we now need the source codes(entity and architecture) for the blocks and test benches for all blocks for simulation.....

Develop transmitter and receiver circuit and pcbs for 900MHz radio that takes extremely small amount of current to preserve battery life. Must be designed using discrete components, and not using SIM900 chips. The radio will communicate digital data bits at 1000 to 10000 bits per second, using half duplex. The radio should be able to communicate at a distance of 500 meters or more. The transmitter/Receiver circuit must be developed with USA Fcc requirement in mind. Must be able to pass Fcc tests. Must have in-depth understanding and experience with wireless and antenna technology we need to incorporate this rx/tx radio in our cpu boards. so you will need to build sample demo units, perform testing and give us feedback on the results, send the samples to usa for our own...

...packet, REST the elapsed time recieved as data in the packet to the local RTC time, promt to uart message with "real" time stamp (current timestamp - elapsed time) • 10ms or less accuracy wanted • All transmitter and reciever in same channel, or multichannel if you are able to listen to all frecuencies from reciever. • About 10 attempts until the transmitter gives up and goes to sleep, the idea is not to lose a message at any cost. • Each interrupt increments "event" counter in transmitter, need to be persistent in shutdown mode, no need to hold counter if power loss • Transmitter packet payload: •• MAC or ID (unique) •• Event counter •• Time elapsed •• Bat v...

...will be to take some features from our existing "Gateway" board that we already use in production and act as a transmitter, sending commands to our other units. It will be built into a remote with buttons on it that people can press to send these commands. This board uses the same board definition as our existing "Gateway" device. So any code moved over from our existing Gateway device should already work. The second function of this board is to act as a "receiver". It will also take some features of our existing "Brain" boards that are also already used in production and be able to receive the commands from a Gateway or another transceiver that has been already set to "transmitter mode". The commands recieved will be used...

Job to do: Create project of simple electromagnetic field transmitter that will be used for medical purpose. It will produce desired electromagnetic field that will operate on human stomach and parasites inside. I already got one which works great, just need stronger one. It will use external power supply: Power supply: 19.5V DC 11.8A It will use external device, which will produce desired frequencies: Input signal: 1-60V, 1-12mA, 100Hz-1MHz, square wave Device should have adjustable power of 10-100W inside magnetic coil (or at least 10-80W) and operate with frequency range of 100Hz-1MHz (or at least 300Hz-600kHz). Basically device must produce electromagnetic field with frequencies set by input signal, and strengthen it with power supply. It should be as effective as possible, t...

I want a remote control car pcb designed with assembled transmitter and reciever. You have to use components given in images only. Transmitter & reciever range ~10m-50m. The reciever pcb should be assembled with car control in same pcb.

I want to make this product . Involves everything, one window solution. Input : RTD, Thermocouple - All, Output : 4-20 mA DC in 2 wire loop, PS : 15-30 V DC, Head Mount enclosure of dia 43 mm, All calibration/selection/range input settings by a communicator on board. Involves : Total design of the product. Hardware, PCB design, Software etc and everything. If you have this product readymade with you, please send a sample to us for testing.

i want a person understand communication in 5 G well to build a code of RF model and VLC model to get the SNR of overall link from transmitter to receiver

Hi, I am after a epos system for restaurants. The system will have a list of foods the restaurant sells and when selected it will give a total. Each restaurants menu will be different. Basically a calculator with added features. I would like it to link to more than 1 device at a time and work together. Maybe this can be done by the restaurants creating an account. Requirements: Have call...and at the same time easily deleted ) Able to apply discounts Create promotions and packages (eg. Meal deals such as burger + chips + wings + milk shake) Add/remove to the menu Change prices Go into orders and edit orders You will need to tell me what needs to be bought and what costs their will be. I will also need to be shown how to set up and pair with printers and call recognition transm...

I'll need someone to review a block diagram and revise it so that a transmitter and receiver are replaced by a transceiver, and the device will still work.

Radio controlled model airplane transmitters are now capable of using lua scripts. One dramatic change in the hobby is that these airplanes used to be powered by combustio...used to be powered by combustion engines that were loud and therefore easy to "hear" what your throttle setting was. Now, electric power has become popular with very quiet motors that make it virtually impossible to determine your throttle setting by sound. The hobby could really use a lua script for an OpenTx radio transmitter that would generate a sound from the tranmitter speaker that would increase and decrease in pitch based on the throttle position of the transmitter. Here is a link to a forum that discusses this issue:

ventilation system controlled by using pls. motor should start at 50% when the temperature in the room is above 24 degrees, increase speed to 75% when it is 34 and increase to 100% when they are 42. Frequency converter uses 0-10v input. PT-100 with temperature transmitter are programs 10-60 degrees and 4-20ma

ventilation system controlled by using pls. motor should start at 50% when the temperature in the room is above 24 degrees, increase speed to 75% when it is 34 and increase to 100% when they are 42. Frequency converter uses 0-10v input. PT-100 with temperature transmitter are programs 10-60 degrees and 4-20ma