About Sensor Module

The Sensor Module features up-to four universal inputs or outputs on a pluggable terminal block with 1-Wire bus master support. The terminals can be used as both analog and digital input/output. For example you can connect various external digital, analog or resistive sensors. Also, you can communicate with other devices on a 1-Wire bus.

The terminals are connected to the HARDWARIO TOWER header signals. A - P4/A4/DAC0, B - P5/A5/DAC1 and C - P7/A6.


The C pin is in default configuration connected also to the ground GND. It is possible to remove zero-ohm resistor R20 and solder it to the place R21. This way the C signal is directly connected to P7 and can be used as extra input.


The VCC middle pin is possible to control by software. You can enable 3 V on this pin.



SDK Library

Header File

Source File



Configurable terminal modes:

  • Analog input or output

  • Digital input or output

  • Pull-up resistor none/4.7 kΩ/56 Ω

Examples interfaces:

  • Digital temperature sensor on a 1-Wire bus (DS18B20)

  • Resistance temperature sensor (Pt 100, Pt 1000, etc.)

  • Analog temperature sensor (LM35, TMP37, etc.)

  • NTC temperature sensor

  • Control of digital 1-Wire relay block

  • Button or any type of switch

  • Voltage measurement

  • Plug-in 4-pin screw terminal block

  • Operating voltage range: 1.65 V to 5.5 V

  • Operating temperature range: -20 to 70 °C

  • Dimensions: 33 x 55 mm