Hello everyone,
I know this forum is dedicated to Home Assistant, and many here have extensive experience with IoT and ESPHome. I’m working on a project where I want to use an ESP32 to simulate button presses on an old appliance (a dishwasher). The idea is to use the ESP32’s GPIOs connected to 4N25 optocouplers, which are wired in parallel with the existing buttons (microswitches) on the appliance’s PCB. By activating the GPIO, the 4N25 simulates a button press for 500ms.
I’ve validated this setup at home using the same hardware but with ESPHome to control my old dishwasher. I soldered wires directly to the appliance’s PCB and managed to control the main functions via Home Assistant.
Now, my goal is to integrate this system with the Tuya platform so that I can control the buttons remotely through the Tuya Smart app, effectively turning the appliance into a smart device.
I’m seeking help to:
- Develop firmware that controls the ESP32 GPIOs to activate the 4N25 optocouplers, keeping them on for 500ms before turning them off.
- Integrate the ESP32 with the Tuya platform, allowing commands to be sent via the Tuya Smart app.
- Configure the necessary Data Points (DPs) for each button I want to control (currently, there are five different buttons).
I understand that Home Assistant isn’t specifically focused on Tuya, but I believe the community here might be able to help or suggest alternatives to achieve this goal.
I’m using the following projects as references:
- How to Make Smart Home Project With Tuya IoT Platform
- Tuya IoT with ESP8266 & Arduino
- Controlling Home Device (DVD) via Tuya Link SDK and ESP32
Could anyone help me with tips, code examples, or guidance on how to develop this firmware? Any assistance would be greatly appreciated!
Thank you!