VEML7700 Ambient light sensor~
This feature is not included in precompiled binaries
When compiling your build add the following to user_config_override.h:
#ifndef USE_VEML7700
#define USE_VEML7700 // [I2cDriver50] Enable VEML7700 Ambient Light sensor (I2C addresses 0x10) (+4k5 code)
#endif
VEML7700 is a high accuracy ambient light digital 16-bit resolution sensor in a miniature transparent 6.8 mm x 2.35 mm x 3.0 mm package. It includes a high sensitive photo diode, a low noise amplifier, a 16-bit A/D converter and supports an easy to use I2C bus communication interface. The ambient light result is available as digital value.
Configuration~
Wiring~
| VEML7700 | ESP |
|---|---|
| GND | GND |
| VCC | 3.3V |
| SDA | GPIOx |
| SCL | GPIOy |
Tasmota Settings~
In the Configuration -> Configure Module page assign:
- GPIOx to
I2C SDA - GPIOy to
I2C SCL
Commands and Use~
| Console Commands | Description | values |
|---|---|---|
| VEML7700power | Power on/off the module | 0/1 |
| VEML7700inttime | Integration time in ms | 25, 50, 100, 200, 400, 800 |
| VEML7700gain | Gain setting (x1, x2, x1/8, x1/4) | 0 = x1 1 = x2 2 = x1/8 3 = x1/4 |
| VEML7700persist | ALS persistence protect number setting | 0 = 1 1 = 2 2 = 4 3 = 8 |
With gain 1/8 and inttime 25 the sensor goes up to 120.000 Lux if someone needs it.
Tasmota Main~
After a reboot the driver will detect VEML7700 automatically and display light intensity.
Breakout Boards~
