BayLibre ACME
 | |
| Status | supported |
|---|---|
| Source code | baylibre-acme |
| Connectivity | BeagleBone Black expansion connector, I²C |
| Measurements | energy, power, current, temperature |
| Website | baylibre.com |
The BayLibre ACME is an extension (cape) for the BeagleBone Black, designed to provide multi-channel power and temperature measurements capabilities.
It comes with power and temperature probes, turning it into an advanced all-in-one power/temperature measurement solution.
Hardware
- BeagleBone Black
- ACME cape:
- I²C current/power monitor: Texas Instruments INA226 (datasheet)
- I²C/SMBus ±1°C temperature sensor: Texas Instruments TMP435 (datasheet)
Photos
Overview
Overview, part 2
ACME cape
Probe, HE10 power
Probe, jack power
Probe, USB power
Probe, temperature
Protocol
ACME probes are connected to I²C bus #1 of the BeagleBone Black via the ACME cape.
The components used to do actual measurements (INA226 & TMP435) are supported in mainline Linux. The drivers expose a standard interface via the Linux sysfs pseudo file system.
The ACME driver for libsigrok uses said interface to acquire measurement samples and control the cape (change shunt resistance configuration, power-off measured devices etc.).