Projektowanie obwodów drukowanych (PCB) Jobs

We are in need on an embedded (PCB) relay board. Looking for a ready and proven solution with any microcontroller(STM32/PIC/Renesas/TI/NXP etc.) with Ethernet interface. The job left would be to add the Relay section and that should be done as part of the project.

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

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

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

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.

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.

Hello everybody, me and my six person team are developing a real-life hardware payment portal which runs with crypto currency payment like IOTA, BTC and ETH. The payment portal has a display introducing the customer. After successfull payment the integrated switch turns on any service, e.g. washing machine (pay for action), car wash (pay for action), car charging device (pay for energy). There are endless use cases. See benefits in the appendix. For this job I would like to get a print ready DIN A4 brochure 2 or 3 folded, both sides illustrated. The hand-over data should be TIF, PDF and native format. After this first project, if both sides of partnership are confident with each other, I would like to continue with designing a proper logo, website and possibly a smartphone application...

Hi, We need help from electronics hardware and firmware designers who have worked on DSPs before because device on which we are working is based on signal processing. Further details will be shared with selected freelancers only. Thanks.

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

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.

SE REQUIERE HACER UNA MODIFICACION AL PROGRAMA DE UN SISTEMA DE FRIO

You must have EXTENSIVE experience with hardware design using ESP32, as well as EXTENSIVE experience and successful background with firmware for ESP32 products and related WIFI & BT work. This project is for a battery operated device with very low QC current. It includes writing firmware for codec and cost effective board design to allow basic half duplex voice through wifi to the device. The device is battery operated and must be designed with extremely low QC to allow years of deep sleep. Candidate must have extensive experience in assembling sample SMT boards [in-house] including the small smt components. You must successfully create samples quickly in-house. It is imperative to have tools such as spectrum analyzer, scope and extensive knowledge and experience with refining the ...

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

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.

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)

I have 2 PLC,s communicating with wireless Modbus RS 485. Slave requires minimal code measuring up to 30 PPS, battery voltage a latching relay and possible count reset command. My intention is to eliminate the Slave PLC. I'm looking for someone who can help me with: (1) I have programs written into 2 PLC,s 1 Master and 1 Slave they are linked via RS 485. (2) They communicate through 2 RS485 wireless transceiver,s The Slave PLC has got a very simple program in it . My task is to move the program in the Slave PLC into a microcontroller. I'm presently using an Arduino UNO for the task I've got the majority of the coding done. In closing, I need someone who has SPECIFIC knowledge in IDEC PLC,s and Arduino microcontrollers.

Need to design a vending machine. Outer body: 6m Shipping container Selling 12.5kg maize meal packet in bags Full layout, Electronics, Solar Power, 3G mobile communication, voice + camara’s. Visa/Master card system.

The DC-DC module(NCS3S4805SC ) is not working now. I am looking for EE engineer. I attached schematic. He will become a member of PPD Development Team.

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.

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

We need a RS485 to TTL transceiver including design, testing, SMT design, gerber production. Note: for shipping reasons, we need someone who is in the USA

Schematic and layout for a simple pcb

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...

Hello I need a PLC programmer for GE Fanuc Emerson equipment. We have the box design and details but need a programmer.

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Hi, Im looking for somebody to help me on SIngle phase ac circuit, three phase ac circuits, RLC circuits, Transformer and magnetic circuits. Please dm for further details.

A small electronic circuit is to be designed for a TENS unit with Bluetooth for Phone integration.

we need to designe circuit that can transfer any text ino digital form and from digital to analog to antenna. we have antenna ready designe that need to be attach to circuit. So Basically via computer software alpha numeric data will send to coil.