Temperature and Huidity Sensor
- https://smarthomescene.com/reviews/tuya-temperature-humidity-sensor-wsd500a/
- https://www.zigbee2mqtt.io/devices/WSD500A.html#tuya-wsd500a
- https://developer.tuya.com/en/docs/iot/ztu-module-datasheet?id=Ka45nl4ywgabp
- https://solution.tuya.com/hardware/detail/61005
Pin Header
| Pin | ZTU | Function |
|---|---|---|
| 1 | ZTU.18 | /RST |
| 2 | ZTU.4 | Burning / SWS |
| 3 | ZTU.14 | Bat+ Vcc |
| 4 | ZTU.13 | GND (! Not Bat- !) |
| 5 | ZTU.15 | B1 Uart_TXD |
| 6 | ZTU.16 | B7 Uart_RXD |
Sensor
| Pin | Function | ZTU |
|---|---|---|
| 1 | AD0 | GND |
| 2 | VCC | |
| 3 | SCL | ZTU.9 |
| 4 | SDA | ZTU.8 |
| 5 | GND | |
| 6 | ALERT | ZTU.2 |
ZTU
| Pin | Function |
|---|---|
| 3 | Reset Button |
??? Bat- is switched via Q1 (labelled as S2 to GND)