Raspberry Pi CM4 Low-power Sleep with RTC Wakeup

Summary

Use

Description

Agonic used a Raspberry Pi CM4 and its I/O board in a sensor prototype that required an average power of ~1 Watt. Unfortunately, the SoC within the CM4 does not support a low-power sleep mode.

A solution for us was to periodically run the sensor application, but shut down power between runs.

The CM4 provides this functionality via a real-time clock module and associated power management IC.

More details to follow.