Sensor Side panel: Add-on for Totem Mini Lab

Side panel includes:

• Microphone — standard ready to use audio frequency

microphone module with built in preamplifier.

• 128×64 OLED display— monochrome graphical screen

controlled via I2C interface. Uses SSD1306 chip as a

driver.

• DHT11 humidity sensor — digital composite sensor

capable of measuring temperature and humidity. Uses

single-wire serial interface for communication.

• NTC thermistor — a simple 10k thermistor that in the

module works as a voltage divider, useful for making

temperature sensors.

• Piezoelectric buzzer — beeper module with integrated

transistor driver. Produces sound when high level signal

is applied.

• DC motor driver module — an h-bridge motor driver

with integrated protections.