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    23 份搜到的工作,货币单位为 USD

    I have a simple circuit that is a battery operated rgb color switcher that runs on a PIC10F202; When the button is pressed, the single RGB LED changes to the next color in the sequence. When the battery is installed, the unit is on, and when the battery is removed the unit is off. What I need is to have the code modified so that the uController behaves in the following manner: 1 Unit is off with battery installed 2 Button is pressed once 3 Unit turns on with last selected color illuminated 4 Successive button presses will cycle to the next color in the sequence (R->G->B->Y-C->M for example) 5 Unit will stay illuminated in the current selected color until, 6 Long press (2 seconds) will shut the unit off and save the last selected color in memory 7 Operation repeats as above ...

    $183 (Avg Bid)
    $183 平均报价
    11 个竞标
    black bird 6 天 left
    已验证

    - PCB Redesign; - Change from ESP8266-01 to ESP82266-12F; - Add 2 new sensors (temperature, humidity and gas); I accept suggestion for sensors (sensor Mq-2 and Dht11) - Update BOM componets with end of life; - Work on tentative the remain within PCB same size. - Ultimate goal is to make the PCB with the lowest possible cost of production and manufacture 10 samples for test; notice: currently i am using MCU Mega 2560 and isn't possible deploy FOTA (firmware over the air) with ESP8266-01 (Serial3). So, if identified any concerns please, let me know before start

    $70 (Avg Bid)
    保密协议
    $70 平均报价
    31 个竞标

    I need a circuit diagram consisting all the necessary transistors and logic gates , to provide power to a gps, a bluetooth, a small speaker , all powered by a small rechargeable battery. I need this circuit to be less power consuming and provide more efficiency

    $131 (Avg Bid)
    $131 平均报价
    12 个竞标
    fire fighter telephone system 5 天 left
    已验证

    I need experts to have good experience in power line communication to build firefighter telephone system by using addressable node

    $559 (Avg Bid)
    $559 平均报价
    12 个竞标

    LTspice simulation questions, message me immediately if you are an expert in this software

    $128 (Avg Bid)
    $128 平均报价
    17 个竞标

    This is the glymse of the project: This project uses multi-frequency and multi-constellation Global Navigation Satellite System (GNSS) receivers to receive and converting from the received International Atomic Time (TAI) to Coordinated Universal Time (UTC). Once received it syncs the onboard Temperature Compensated Crystal Oscillator (TCXO) or Oven-Controlled Crystal Oscillator (OCXO). Design Schematics, PCB and Firmware Development. Details of the Project will be discussed after evaluvation

    $190 (Avg Bid)
    $190 平均报价
    11 个竞标
    Tinkercad Circuits Simulation 4 天 left
    已验证

    Need help on a basic tinkercad simulation. High school level difficulty ( should only take 15-20 mins) We need to use a power supply, multimeter, small breadboard and resistors to calculate voltage drop, individual resistances and current. Message for more details. Need someone to follow detailed and specific instructions.

    $22 (Avg Bid)
    $22 平均报价
    14 个竞标
    Frequency meter 4 天 left
    已验证

    The project is to read frequency from a magnetic sensor and display the reading on a stepper motor and oled display and design the PCB board.

    $269 (Avg Bid)
    $269 平均报价
    36 个竞标
    Electrical Draughtsman/woman 3 天 left
    已验证

    Complete electrical schematics using AutoCAD Electrical Designing control panels (including layouts), schematics, and creation of associated documentation including BOM’s, manufacturing drawings etc. Ideal Requirements: AutoCAD Electrical 2 Years’ experience as an electrical draughtsperson or similar.

    $14 / hr (Avg Bid)
    $14 / hr 平均报价
    24 个竞标

    Hi, We have designed a PCB around the STM32F401 + SIM868E. This PCB has been designed in Altium and has some connection issues which needs to be resolved. So in short the PCB design needs to be validated and potentially reworked. Please contact for more information.

    $483 (Avg Bid)
    $483 平均报价
    49 个竞标

    LTspice simulation questions, message me immediately if you are an expert in this software

    $141 (Avg Bid)
    $141 平均报价
    20 个竞标

    I want basic and pcb design which can be used for all devices. containing essential components like microcontroller oscillator power module etc.

    $48 (Avg Bid)
    $48 平均报价
    21 个竞标

    PLEASE READ BEFORE BIDDING. 1. we have all winner custom design board need to bring up 2. we have bootloader 3. we have firmware package we want to install 4. we have phoenixsuit program 5. we have board all tested and powered up for installing. REQUIREMENTS: 1. you have many years experience in pcb board bring up it's a custom design board with allwinner 2. you are linux expert in programming firmware for pcb board pls contact me for more information. Tasks: 1. to adjust boot loader to boot our pcb board 2. make adjustments to our pcb board firmware to run properly,

    $831 (Avg Bid)
    $831 平均报价
    17 个竞标

    We are working on a somewhat stealth electric car charging company and need assistance from a EE experienced in PCB design, high voltage, high amperage, and more.

    $51 / hr (Avg Bid)
    $51 / hr 平均报价
    11 个竞标

    hola, necesito una cotización para hacer los siguientes artículos para un edificio. 1- red eléctrica de media tensión 2. red electrica de baja tension 3. utilidad final de la red eléctrica si te interesa, comunicate conmigo para enviarte los dibujos finales.

    $1033 (Avg Bid)
    $1033 平均报价
    14 个竞标
    Design custom esp32cam pcb 2 天 left
    已验证

    I need a custom gerber file (compatible with ) of esp32cam for a round ⌀32mm board. You can only remove card reader. All pins arround the board like the lilypad board. Camera objectif should be on center of the board. To avoid bot, start your proposal with "Hi Ju"

    $36 (Avg Bid)
    $36 平均报价
    17 个竞标
    Pcb design 2 天 left

    Schematic Design | PCB Design | Product Design, IoT developer, PCB Designer, Embedded programmer, circuit developer, Hardware Engineer

    $283 (Avg Bid)
    $283 平均报价
    23 个竞标
    EasyEDA Expert 2 天 left
    已验证

    I am looking for easyeda expert who is able to work on PPD candidate must know how to design circuit and choose in-stock components from LCSC. If know about firmware development, it would be great.

    $565 (Avg Bid)
    $565 平均报价
    33 个竞标

    Development of Ultrasound PCB Need the generator to work around 1.7Mhz freq. with 8 outputs Need that the PCB with impedance matching circuit(to the transducer and electronic) thanks *please contact me only when you have an experience with ultrasound designing *Please be aware that I need full work: design-manufacturing-assembly-testing and shipment to be a full working prototype the payment will be only for working prototype attached specifications(can be change)

    $2580 (Avg Bid)
    $2580 平均报价
    15 个竞标

    We would need to create a hardware to sit on a raspberry pi or an arduino and connect to vending machines control boards. We would like to read data from the vending machine through the MDB protocol and send instructions to the vending machine. Above is the requirements. Please don't bid on this project unless you got previous experience with mdb protocol.

    $534 (Avg Bid)
    $534 平均报价
    17 个竞标

    We have a low voltage project that requires expert advice and consulting on. Plus design and stamp for approval with cUL and UL I need an electrical engineer that specializes in low voltage to help us put our design into drawings, and stamping for approval. Along with providing their expert opinion on the design. IMPORTANT: The engineer must have an engineering stamp

    $30 / hr (Avg Bid)
    保密协议
    $30 / hr 平均报价
    20 个竞标
    PCB layouts 16 小时 left

    Schematic and layout for a simple pcb

    $309 (Avg Bid)
    $309 平均报价
    39 个竞标

    The PCB board needs to cover followed: 1. Board supply from 8-36V (TPS54240) 2. Two analog inputs to measure volts from 0-36V (ESP32 ADC), GPIO36, GPIO4 3. Three analog inputs to measure current and volts from 0-20A using INA226 via I2C - GPIO22(SCL), GPIO21(SDA) 4. Two Digital inputs with high voltage protection, working voltage 0-36V - GPIO5, GPIO27 5. Two Digital Outputs via Open Drain N-MOSFET (AO3400) - GPIO25,GPIO26 6. SIM7080G LTE/GPS via PCIe, sim card slot on the main board - connected to Serial 2 - GPIO16(RX), GPIO17(TX) and powered by own Step-Down from 12V to 3.3V, it could be used MP1584EN, or any suitable circuit up to 2-3A 7. ESP32 powered by own Step-Down from 12V to 3.3V it could be used MP1584EN, or any suitable circuit up to 2-3A 8. Display Module 128X128 I2C 1.5inch...

    $1085 (Avg Bid)
    $1085 平均报价
    22 个竞标