
A BLE Beacon is a low-energy Bluetooth device that transmits sensor data wirelessly. It supports I2C, analog, and digital sensors, offers low power consumption, and customizable broadcast settings.
VCC:3.3V Input; GND:Ground; IO0:RX(3.3V); IO1:TX(3.3V)
VBAT:Coin Cell Positive; IO3/IO7:SDA/SCL or digital/analog
SW0:Power sensor during broadcast; IO4/IO5:SDA/SCL or digital/analog
SW1:Pull down during broadcast; IO2:SDA/SCL; IO6:Analog (divider)
UART · I2C
Confirm the data interface matches your host board.
Module pins: I2C/Other sensors (coin cell), Serial port burning area, Battery socket, I2C/Other sensors (dynamic), Digital/Analog Sensors. Schematik maps them to your board in the app.
MQ-2 Gas Sensor visual preview
MQ-3 Gas Sensor visual preview
MQ-135 Gas Sensor visual preview
Grove - Air quality sensor visual previewChoose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.
Sensors · Gas & air-quality sensors · 29 parts
Gravity: DHT11 Temperature & Humidity Sensor For Arduino visual preview
MIKROE DHT22 2 Click visual preview
MIKROE DHT22 Click visual preview
DHT20 - AHT20 Pin Module - I2C Temperature and Humidity Sensor visual previewDHT11, DHT22/AM2302, and DHT20/AHT20 sensors solve the same broad job, but only some are acceptable substitutes in the same circuit.
Sensors · Environment sensors · 19 parts
Gravity: DHT11 Temperature & Humidity Sensor For Arduino visual preview
Fermion: ENS160+BME280 Environmental Sensor - TVOC, eCO2, Temp & Humidity (Breakout) visual preview
MIKROE DHT22 2 Click visual preview
MIKROE DHT22 Click visual previewChoose between temperature-only, temperature/humidity, pressure and indoor air-quality modules without treating every environmental sensor as a drop-in substitute.
Sensors · Environment sensors · 8 parts
Photo cell (CdS photoresistor) visual preview
TCS3200 Color Sensor visual preview
Adafruit APDS9999 Proximity, Lux Light & Color Sensor visual preview
Adafruit AS7341 10-Channel Light / Color Sensor Breakout visual previewPhotoresistors and color sensors both respond to light, but they expose very different signals and are not sensible drop-in substitutes.
Sensors · Light & color sensors · 6 parts
IO3/IO7/IO4/IO5/IO2 pull-up soldering points (default: no pull-up)
CR2032 button cell (positive→VBAT, negative→GND)
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| Serial port burning area | Official table 2 row 1 | ground | VCC:3.3V Input; GND:Ground; IO0:RX(3.3V); IO1:TX(3.3V) | |
| I2C/Other sensors (coin cell) | Official table 2 row 2 | power | VBAT:Coin Cell Positive; IO3/IO7:SDA/SCL or digital/analog | |
| I2C/Other sensors (dynamic) | Official table 2 row 3 | i2c | SW0:Power sensor during broadcast; IO4/IO5:SDA/SCL or digital/analog | |
| Digital/Analog Sensors | Official table 2 row 4 | i2c | SW1:Pull down during broadcast; IO2:SDA/SCL; IO6:Analog (divider) | |
| Pull-up Resistor Selection Pad | Official table 2 row 5 | digital io | IO3/IO7/IO4/IO5/IO2 pull-up soldering points (default: no pull-up) | |
| Battery socket | Official table 2 row 6 | ground | CR2032 button cell (positive→VBAT, negative→GND) |