Add support for BQ27441 battery monitor #323
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zakrent
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zakrent
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Sorry, it exploded after I rebased it but now should be fine. |
zakrent
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gorbit99
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Jul 31, 2025
src/batterymonitor.h
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| float getVoltage() const { return voltage; } | ||
| float getLevel() const { return level; } | ||
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| String getExtendedInfo(); |
src/serial/serialcommands.cpp
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| } | ||
| logger.info( | ||
| "Battery voltage: %.3f, level: %.1f%%", | ||
| "Battery voltage: %.3f, level: %.1f%%, %s", |
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this adds an unnecessary leading "," when anything other than the BQ chip is in use
src/defines.h
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| #if BATTERY_MONITOR == BAT_BQ27441 && I2C_SPEED > 100000 | ||
| #error BQ27441 library supports only 100 kHz I2C speed | ||
| #endif |
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Not sure how well this requirement would work, the sensor reading speed is already somewhat the bottleneck with 400kHz
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You're right, for daily use I use trackers iwth single IMU but if I tried it with 2nd one it got laggy.
I improved the sparkfun lib to support i2c >100 kHz.
gorbit99
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Aug 2, 2025
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Adds support for BQ27441 battery gauge IC.
This IC is used for example in this sparkfun dev board: https://www.sparkfun.com/products/13777 and also can be used on custom PCBs.
It uses Sparkfun library for this IC: https://github.com/sparkfun/SparkFun_BQ27441_Arduino_Library, it is MIT license.
I modified this library slightly to disable
Wire.begin()call in it.