??? tip "This feature is included only in tasmota-sensors"
When [compiling your build](Compile-your-build) add the following to `user_config_override.h`:
```c++
#ifndef USE_HM10
#define USE_HM10 // Add support BLE sensor bridge (+5k1 code)
#endif
#ifndef USE_IBEACON
#define USE_IBEACON // Add support for bluetooth LE passive scan of ibeacon devices
#endif
```
HM-17 and HM-16 are a Bluetooth BLE V4.1 module based on TI CC2640R2f chip. Manufactured by Jinan Huamao
Check whether your module is communicating properly over its TX/RX pins and that it has the required firmware (firmware V120 or V110). Only when you're sure everything is ok proceed with the configuration.
| HM-16/17 | ESP |
|---|---|
| GND | GND |
| VCC | 3.3V |
| TX | GPIOx |
| RX | GPIOy |
In the Configuration -> Configure Module page assign:
- GPIOx to
iBeacon TX (168) - GPIOy to
iBeacon RX (169)
When first connected HM-16/17 is in peripheral mode. You have to change it to central mode using commands Sensor52 1 and Sensor52 2.
If you have supported iBeacon Bluetooth devices in range, they will be discovered and will start to populate the webUI with data:
For a complete overview of supported devices, commands and features read the Bluetooth article
