Introduction

This application note demonstrates how to extend the Tracker One with additional functionality for tank level monitoring.

Supported devices

Hardware and supplies

• Tracker One or T-SoM
• MCP23008 GPIO expander
• ADS1015 ADC
• Tank level sensor (240-33 ohm)
• 12V boost converter

Project description:

This application note demonstrates how to extend the Tracker One with additional functionality for tank level monitoring:

• Adding GPIO ports using an MCP23008 (3.3V compatible)
• Adding ADC channels using an ADS1015 for 12-bit resolution
• Connecting a tank level sensor with 240-33 ohm resistance
• Integrating a 12V boost converter for low-power 12V sensors, necessary for the tank level sensor