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ARM, ALTERA, AVR, etc. development. PCB layout. Programming. Solidworks modeling.

Username: VoblNet

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Location: Dnepropetrovsk, Ukraine

Member since: September 2012



(11 reviews)

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3 users have recommended this freelancer.

My projects:

  • $150.00 AUD
    Profile image for Seller brendo


    21 days ago

    Good communication and response times which is most important to me. Very knowledgeable. Answered all questions and adapted to changes throughout the project. Would hire again.

    Project Description:Modifications to be done to an existing PCB design. I have a working PCB prototype of a portable Bluetooth Low Energy NFC reader. There were many recommendations in a review of the design which need to be incorporated...
  • €22.00 EUR
    Profile image for Seller ichnos75


    Jun 29, 2014

    precise and professional, recommended

    Project Description:N/A
  • $150.00 SGD
    Profile image for Seller neufuture


    May 18, 2014

    For this project freelancer did good work, but with another project freelancer lost communication and project was not able to be finished.

    Project Description:Need to create the schematics and PCB design for a circuit that runs off 3.3VDC power source and is able to convert the signal from 4-20mA 12VAC loop current sensor devices to a range of 0-3.3V DC that can be read by the microcontroller...
  • $100.00 USD
    Profile image for Seller neufuture


    Apr 10, 2014

    Great work, completed the job well within the time agreed upon. Very responsive.

    Project Description:A design for a pH electrode amplifier was created using the reference PDF linked below. The engineer did not understand the concept of guard ring and therefore the design must be fixed to incorporate the guard ring as specified in the document...
  • $150.00 USD
    Profile image for Seller rodeomusty

    rodeomusty [ Incomplete Report ]

    Mar 24, 2014

    incomplete job. 2 days after deadline still not even answering my messages

    Project Description:I need a microcontroller circuit schematic and PCB, based on stm32f100r8t6b. (stm32VLdiscovery kit is a good reference) PCB will be 2 layer Details: * 2 L298P H bridge motor driver * 12V to 5V switch...
  • $30.00 USD
    Profile image for Seller boce123


    Mar 15, 2014

    nice work. will hire again soon

    Project Description:I need someone to make a small PCB design at Altium Designer. I can provide a picture of the schematics (but not Altium Schematic), footprints,Datasshets. The tricky part is that the pcb should be ''fitted'' in really smal surface(it is doable, just i cant handle it)...
  • [Sealed]
    Profile image for Seller cuboverde

    cuboverde [ Incomplete Report ]

    Mar 14, 2014

    The project is not completed according to the dispute

    Project Description:I have purchased the EC4-500-CO electrochemical gas sensor for CO gas detection from The gas sensor datasheet is here:
  • $24.00 USD
    Profile image for Seller yakir107


    Mar 2, 2014

    Great! thanks

    Project Description:Hello I need a micro project that can convert ohm to voltage. The input ohm are adjust from 0 to 300 ohms, i must to convert it to voltage and input it to microcontroller. Waiting for your offers,...
  • $330.00 USD
    Profile image for Seller vw7003313vw


    Feb 18, 2014

    This project was executed to perfection. The freelancer was very timely, communicated continuously throughout the timeline with abundance of smart design ideas and insightful questions. All of this made it so the project was very well understood and completed successfully by someone who felt involved in the success in the project. Definitely recommend.

    Project Description:I am tinkering with a small inhouse and want to convert a PWM signal input from an open collector type sensor into two separate analog 0-5v signal outputs. I need someone to do schematics and circuit board design for this...
  • $450.00 USD
    Profile image for Seller jcdillin


    Dec 11, 2013

    Great Freelancer! Very good at what he does and always was pleasant to deal with.

    Project Description:We want to use a RC522 RFID chip to provide an access control solution. Chips involved ATMEGA168 or ATTINYx depending on whats decided RC522 Chip Features RGB LED showing status of lock High...
    VoblNet has not completed any projects.
  • ₹23000 INR In Progress

    I need to develop a library to interface an Arduino (UNO R3 or Leo) as USB HID Gamepad.While basic USB HID gamepad library for Arduino exists in open source universe, I need one with Force feedback support.So in effect I should be able to program an Arduino so that when connected to a PC it should be read as a HID Gamepad with force feedback.I should be able to program it to read button state etc to control game, also I should get data from PC telling me what and how the vibration motors should function.Resources:

  • $450 SGD In Progress

    Need skilled PCB designer to create a 2-layer wireless sensor board with PCB antenna. Should be knowledgeable of requirements for CE and FCC certifications. Two sensors will be connected to the microcontroller. The board will be powered by 3.7V battery supply. Circuit must include battery monitoring. Also must include load switch for controlling power state of the two sensors and 3 LEDs.Tasks necessary:Design schematic based on referenced designsPerform any necessary simulationsSelect componentsCreate BOMDesign PCBProvide Gerber files for production

  • zł500 PLN Today

    Zlecę wykonanie obsługi enkodera inkrementalnego na mikrokontrolerach STM32f429zit6. Enkoder ma być podłączony do pinu PE9-A i PE11-B i uruchomiony na TIM1. Tryb enkoderowy musi być uruchomiony z obsługą DMA oraz FIFO. DMA ma zapisywać ilość impulsów do pamięci.Preferowane środowisko KEIL.

  • [Sealed] Today

    Complete details are provided in the attached PDF.This project requires the design of a small circuit board to convert RS232 to RS485. The device is to be port powered from RS232 and designed to mount on a particular set of screw terminal blocks.The project requires delivery of schematic, BOM, CAM, and PCB/PCBA assembly documentation. Firmware source code is also required if a microcontroller solution is used.Please provide relevant examples of previous work.

  • ₹28000 INR Today

    I need to create a wifi client application(using AT COMMAND). It should be created using ARDUINO + UART wifi modules. I am specifying the modules details : 2.4 GHz Wireless UART Wifi module TLG10UA03 UART IEEE802.11B or HLKRM04. Details of the wifi application -1) It should be able to scan all existing wifi networks and show.2) It should be able to connect to any wifi network, in both ways i.e.a. Secured : ask for passworrd for connectingb. Unsecured : connect without any password3) It should be able to call a URL with querystring and store the feedback in a string variable we need a documented file + Source Code describe all the details in the project with pictures and drawing figures step by step.

  • $1250 USD Yesterday

    Hello I require three stand alone devices which sniff and duplicated the small files and transmit by Bluetooth

  • $20 USD/hr Yesterday

    i need someone to design a PCB . simple 2 layer PCB with atmega328-pu , XBEE zigbee module and a few more parts .

  • $400 USD Yesterday

    I have several (up to 12) instruments for measuring flow, they produce pulses related to the amount of flow. Using Aduino one I"ll like to have an Arduino code listing on how to count and add up individually these 12 amount of pulses on a long period of time (weekly or monthly) then been able to transfer these 12 totals to a PC. I will later analyze and apply constants to have actual measurements. I need this to be measure constantly and also to have an additional variable with individual measure during a period of time (3 or 4 o"clock in the morning, to be selected and programmed) so I can have the amount of pulses during this specific period of time in addition to the amount of monthly or weekly pulses per instrument.As a second phase I"ll like to add a SIM card and if necessary a SD memory card and transmit these totals via 3G

  • $600 USD Yesterday

    I need you to develop a hardware that can turn itself towards specific co-ordinates that is communicated to it remotely, may be radio signal, etc. I will also need another device that listen to sms and sends the signal out the slaves devices.

  • $250 USD 2 days ago

    GSM дозвон GSM модуль только Ubloxмикроконтроллер STM AVR PIC1 зона1 вход постановкиДозвон на 3 номера sms постановка и снятие с охранывыход на сирену светодиод состоянияуправление чувством микрофонавходящий звонок только для 3х номеровдобавление номеров при входящем звонке по нажатию кнопкипроект не коммерческий, а для публикации

  • $700 USD 2 days ago

    A suitable qualified contractor(s) has not yet been secured to help stop the golf club fitting trade from continuing its embarrassing performance record and reputation, which will persist until this project becomes a reality. Some knowledge of and/or interest in golf and the game"s future might be a plus, but it is not required and present-day golf knowledge that is deeply embedded and frequently flawed might instead contribute to a project of lower quality.A major issue is that early development phases have already been paid for in full (leaving little cash left) to a contractor now ill, having suffered a stroke, with presumably no chance of ever recovering any money spent based on his situation. I can only hope I can eventually get some business value out of this situation (I am told he wants to resume work when able to but no other useful information is ever given) despite his very poor performance even before he became more seriously ill. But this unfortunate situation opens the door for hopefully a better relationship(s) to be forged with the right party or parties.Briefly, the needed device(s) comprises 3-D wireless motion detection that likely attaches to a golf club and gathers accurate, stable 3-D golf club motion data during golfer pre-swing movement (before the backswing of any golf swing [including a practice swing] even begins). Further required is an appropriate algorithm and additional application software to help decipher a critical pre-swing rotation point location developed and existing only during this period (which most golfers have but at various locations) that essentially divides the golf club"s length into two sections during the pre-swing. Various types of club movements occurring during this period, comprising some that are extremely subtle and short, may be far more challenging regarding algorithm development and/or hardware technology than just tracking and analyzing a relatively simple golf swing.The determined rotation point location is then applied (in the form of an adjustable fulcrum location) on a discrete scale for balancing golf clubs (which also needs to be developed), cumulatively resulting in a new golf club specification named "waggle weight." For those familiar enough with golf already, this is a badly needed advancement of the already-long-proven yet still-badly-misunderstood golf club specification named swingweight.Time is of the essence, as the contractor noted above has delivered essentially zero (not even any documentation for anyone else to work from) over the past three years for what was supposed to be done in a few months. (He was supposedly literally just days away from finally completing the project successfully when sadly suffering his stroke). So valuable remaining patent protection time has now been lost.As indicated, little cash is available due to the present circumstances (at least until it can be proven that a prototype or early model works appropriately and some initial test data can be gathered and analyzed to see if continuing is warranted). Help is needed for both hardware and software development, including the mathematical algorithm(s) that is in essence the heart of the system.Supplemental and potentially helpful information can be found through:US Patent Number 8,074,495;A crude but copyright-registered 25-minute video link at; andArticle link plus other links accessible through this link containing other project, company, and personal information.Anyone, interested and able to skillfully help finally bring any part(s) of this project to fruition in short order and at minimal expense, please consider contacting me with any additional questions. Other leading-edge projects beyond this one are also in early development. Thanks.

  • $100 USD 2 days ago

    I need to use the Atmel ATTINY841 in Arduino projects. The code provided should be based on arduino-tiny, found here: should be options for common clock sources, like an 8 and 16 MHz crystals, and for using the internal oscillator.

  • $170 AUD 3 days ago

    We require a PCB design and Board layout, please see attachment, forward any questions you may have

  • $450 USD 3 days ago

    Small printed board with Bluetooth integration

  • $120 USD 3 days ago

    I supply you with the schematic design with all the libraries in Altium designer, and the board dimension and the locked components. Place the remainder of the components on the board and route it

  • €330 EUR 4 days ago

    Arduino/Electronics ProjectI require someone to create a unit:1) Transfer the touch gestures from a touchscreen (may be usb or 4-wire) to an android or ios device via bluetooth .

  • ₹8000 INR 5 days ago

    Part 1# one .pcb file is ready for conversion. I require gerber data for the same & need to cross check the same with Schematic & Bill of material.Need final gerber data.Part 2# need to design gerber data from schematic & bill of material.Rest files will be shared for selected candidate.For approval i require gerber data of project # 1, if all found ok then can award the project.

  • $250 AUD 6 days ago

    My name is Gopi, I live in Australia. I need a per-amplifier to be build with particular specifications.If you are available to build the required per-amplifier, Please share me your contact details, I can call you and discuss further,Regards,Gopi------------------------The preamplifier consists of (1) a T/R switch, (2) a low-noise amplifier, (3) a filter, and (4) an adder. The purpose of the preamplifier unit is to protect the sensitive receiving section from high-voltage signals during the transmission and permit the echo-signal to pass through for further amplification The power amplifier output is connected to the preamplifier through a pair of back-to-back (D1) diodes and the interconnecting cable to a diode bridge in the preamplifier. The IN-4004 diodes serve to reduce the hum and noise generated by the power amplifier to less than 0.6 V, while the diode B-1 bridge is biased by the 2 K resistors to pass the resulting low-noise voltage to chassis ground.When a tone burst is generated, this B-1 bridge is biased off and D1 pair of back-to back diodes passes the signal to the terminals of the transducer. The second B-2 diode bridge, which is in the transducer leg of the pre-amplifier, is also biased off from this high voltage signal.In the absence of a tone burst, the back-to-back D2 diodes that were previously short-circuited are now open circuited, and the voltage present at the transducer terminals is passed to the 100:1 step-up transformer through the B-2 diodes bridge. A third set of back-to-back D3 diodes are used to limit the leak-through signal form the B-2 diode bridge to the step-up transformer during the tone burst. The step-up transformer is used to obtain 40-dB of noiseless amplification of echo-signals varying from 0.1 to 400 µV. The BFW 10 low-noise FET operational amplifier provides another 40 dB of gain, raising the signal level into the mV range.A band-pass filter is used to filter the other noise components in echo-signal and amplify up to a gain of 60 dB. The effects of ground loop currents are avoided by feeding a sample of control unit ground current back to the preamplifier through the non-inverting input of the last stage of amplification. The echo signal, now band-limited and amplified by 80 dB, is fed through a single conductor of the interconnection cable to the sound device line-in port of the PC.

  • €200 EUR 6 days ago

    I request design and production of prototype of electronic circuit working as digital clock showing time by leds. Detailed information are written down in attachment.

  • $700 USD 6 days ago

    Need to design an electronic circuit capable of transmitting inaudible sound in frequency range of 17 kHz to 19 kHz within a geographical area of radius of 70-80 meters. The sound signal would be carrying some predefined digital bit sequence (you can use any modulation technique as long as its mathematical demodulation is possible). Sound signal should be detectable by any normal smartphone available in market. Circuit should consume as much less power as possible. Heat dissipation, if any should be taken care.Let us know how would you do it & how much time would you need for this.

  • $500 USD 6 days ago

    We are looking for a PCB and Embedded Developer that can take an idea and conceptualize it into a PCB. We are evaluating several options to accomplish this and while this is not a complicated project it will require someone with the skills to create a verified BOM and PCB Schematic and Layout.We have evaluated several potential parts but would like the guidance of someone that does this regularly to verify and or suggest lower cost parts, better platform and maybe even simplify the idea some.This will most likely require a board that has a Full Speed USB implementation as without this the USBMIDI protocol is not typically implemented. Use of capacitive touch and rotary encoders/potentiometers and sliders will be present in this system as well.We also would like to consider in addition possibly TI"s wilink modules for embedded ble and wifi, but we are open to alternative modules as well.We are not 100% committed to use a Cypress PSOC setup, but seems to be a good fit for the project but will rely on your expertise for suggestions in this area as well.Look forward to your expertise!

  • €720 EUR 6 days ago

    Hi, We"re searching for people/company who can make a project in Arduino.We need something like a people counter machine. It has to count the people inside of a room and send that data to a MySQL database by wifi. The counting method could be anything... with IR sensors, with cameras, detecting the mobile connections or wifi, or 3G connectios around, with ZigBee, Xbee, whatever...We don"t need the system to be very accurate but we want minimum error. The budget can be negotiated. Thank you for your attention.

    VoblNet does not have any open projects.
    VoblNet does not have any work in progress.
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Regional Technical Service

May 1999 - Present (15 years)



electronics engineer