CAN bus pressure sensor

Introduction

This page presents a pressure sensor based on an ATmega32M1 and 25MPP-02 with an embedded CAN bus interface. This board can measure pressure in range from 0 to 37 kPa.

Processor

The first part of the schematics contains the microcontroller with external devices:

• one LED for debugging;
• an ISP connector (In System Programming);
• a CAN bus interface based on MCP2562 transceiver.

Sensors

The second part of the schematics contains sensors circuitry:

• an LMV321LT for generatig a constant current;
• the pressure sensor (25MPP-02) manufactured by Omron;
• an instrumentation amplifier for interfacing the ADC of the microcontroller.

Photos

Download

EAGLE PCB project, Solidworks files, BOM (Bill of Material), pictures, etc. can be downloaded here:

pressure_sensor.zip

See also

• CAN bus motor controller for DC or BLDC motors
• CAN bus shield for Raspberry Pi 3
• CAN bus ultrasonic distance sensor
• CAN bus time of flight distance sensor
• Low-cost PCB manufacturers

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