PCB layout and design for IOT project


Thank you for your interest in my project.

I'm looking to develop a 220v wifi realy board for IOT, this module will be programmed to control light switches and make them controllable through the smartphone.

This module should be as small as possible (~50mm x 50mm), as it should fit inside the wall behind switches.

Looking for hardware engineer who can contribute to this project, advise and help creating this module small as possible, safe to use and reliable.

the board should have the following features:

- Based on esp8266

- Operated by direct input of 110V-240v.

- 2 10A relays with derived NO and NC contacts (110v-240v)

- 2 BUTTON inputs - here we connect the on / off switches

- 2 SENSOR inputs - we connect sensors (Temp, Humidity, etc.)

- 1 ADC measurement input (e.g. to connect light intensity sensor)

- 1 CFG button to enable the module into the configuration mode

- 1 indication led

- Headers for 3.3v, GND, TX, RX

- Enclosure case design (for 3D printing) - 50mm x 50mm x 25mm.

Some files attached for reference in similar projects.

See also for reference:

[url removed, login to view]

[url removed, login to view]

Another great example for reference is Sonoff dual:

- Pins for setting flashing and reset (using jumper)

Evner: Kredsløbs Design, Elektrisk Ingeniørarbejde, Elektronik, Microcontroller, PCB Layout

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Om arbejdsgiveren:
( 20 bedømmelser ) Tel Aviv, Israel

Projekt ID: #15942193

Tildelt til:


hello sir/ma'am I have 4-year experience in PCB layout design(flex, multilayer). Its an easy task for me because I am working on Home Automation products from last 2 years. and 1year experience in CAD design(enclosu Flere

$100 USD in 5 dage
(6 bedømmelser)

24 freelancere byder i gennemsnit $172 på dette job


hello, Client I have experience in circuit design, PCB design, firmware and embedded software, real-time control, embedded design, Electronics design and PCB artwork. .I have an experience in PCB design and IoT. I w Flere

$222 USD in 3 dage
(39 bedømmelser)

Hello I have experience in designing electronics circuits and can make your project. I will make your project practically on breadboard and will provide you circuit, code and PCB design. I can also manage online datab Flere

$300 USD in 15 dage
(24 bedømmelser)

Hi sir I have 5 year experience of hardware design and pcb design field I have done already home automation projects using controller, WiFi, relay It's switch behind small module 50*50mm 2gang Thank you

$200 USD in 10 dage
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Dear Sir or Madam I readed your proposal and I can make your job perfectly. I'm a proactive, innovative and very responsible person that enjoys acquiring new knowledge and experience and working with challenging Flere

$200 USD in 3 dage
(10 bedømmelser)

Hi, This project is a very appealing to me. I have a lot of experience in design of IoT product using esp8266 wifi module and Raspberry PI. You can see the similar project in my portfolio. If you want, I can share Flere

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My self jaydeep singh, I am interested to work on your project, i am PCB expert in signaling PCB, I Can revise and advise all Application with new schematic and BOM, Please hire me on your team, i will impress you w Flere

$55 USD in 7 dage
(3 bedømmelser)

Hi there, This is Ushan from Rational-X. I have done many ESP8266 and ESP32 based projects. So I believes I can give you a great service with my experience. You can check my reviews. I can design this PCB to use Flere

$230 USD in 10 dage
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Hi, I have experience with arduino, electronics, developing schematic and developing PCB layout. I worked on projects like a smartHome systems (smartSwitch, smartSocket, smartTemperature, smartWindow, smartDoor, smart Flere

$300 USD in 5 dage
(2 bedømmelser)

I have experience in PCB design for 5 years. I design many board from MCU, FPGA, module GSM, Wifi, Bluetooth, some standard interfaces I2C, SPI ... and differential pair signal. I also usually work with PCB multi layer Flere

$77 USD in 5 dage
(1 bedømmelse)

I am sure that I am the ideal one for this project, I worked on project that is very likely to yours and made a prototype of it (both Electronic and 3D printed Cover) so I know all the problems that might occur in the Flere

$222 USD in 2 dage
(2 bedømmelser)

I have quite experience with power boards and their interface with IOT i can layout such board as i have designed many such boards from aspect of mecanical fitting and isolation consideration. Relevant Skills and Ex Flere

$111 USD in 3 dage
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Hello, I would be glad to help you with this project. It seems very straight forward and fits my experience and background based on the description. I could get started right away if you would like and am confid Flere

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Hi i hope you doing good.i just across your post. i would like to spend time with [login to view URL] call me when you are free. best, Tamilharasan

$80 USD in 3 dage
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I have made the same project so let's discuss it more in msg. I have made triac driver circuit for ac and dc load. Relevant Skills and Experience I have made 230v ac load circuit using bluetooth, wifi , temperature se Flere

$77 USD in 10 dage
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Hi. Should be interesting project. I have experience with producing of pcbs for nuclear physics application, for robots and other devices. Have experience with arduino and atmega itself, ESP just started, but looks not Flere

$155 USD in 3 dage
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