![]() ![]() ![]() Hey, I have recently managed to get a CB3S (BK7231N) Garage Door Sensor working with HA. This simple demo takes you through the development of a smart product on the module by using the SDK provided by Tuya to remotely control the led lights on the board through the Tuya Smart App. Pin Name Functional Description 1 RST Reset Pin, Active Low 2 ADC AD conversion, Input voltage range 0~1V, the value range is 0~1024. Key(s) Meaning I will present here the interior of the Tuya WiFi door / window sensor implemented on the basis of two separate systems - a microcontroller (powered all the time) and a WiFi module (here: CB3S / BK7231N powered only when you need to send information via WiFi) communicating via UART (TuyaMCU protocol but in version 0x00, Unfortunately, I didn’t tried device on Tuya firmware at all, so I cannot know is it red for on, blue for off, feature or bug, I flashed it with OpenBK straight after unboxing. Step 1 - Pre-order the parts you need at JLCPCB. Tuya cb3s pinout reset CB3S is built in with a 32-bit MCU whose running speed can be up to 120 MHz, a 2-MB flash memory, and a 256-KB RAM, to support the Tuya cloud connection. ![]()
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