CompletedDaisy chainable relay board
License
：CERN Open Hardware License
Description
Have you ever had some issues with those closed source home automation relay boards?
Most of the problems we encounter are:
- Closed source
- You need an amount of relays but the avaliable ones have either too much or too little.
- Uncommon hardware
- Programming port not exposed
- No GPIOs avaliable
Well, thats a project for you!
With this project the controller is the well known esp32-s3. It comes with an usb-uart programmer...
And most important... The relay board module are daisy chainable!
Just like WS2812 leds, you just plug one board at the end of another. Each board has 8 relays.
Need 16 relays? just use 2 boards
Need 32 relays? Just use 4!
Since they're driven by an jellybean 74HC595 shift register, the usage of the out enable and latch and simple logic together with 74LVC2G241 allows to deduce the amount of relays avaliable!
Design Drawing
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This is an open-source hardware project. All intellectual property rights belong to the creator. The project is shared on the platform for learning, communication, and research only; any commercial use is prohibited. If your intellectual property rights are infringed on EasyEDA, please notify us by submitting relevant materials in accordance with the Rules for Complaints and Appeals of IPR Infringement.
Users must independently verify the circuit design and suitability when replicating this project. All risks and consequences are borne by the user, and the platform assumes no liability.
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