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A comment on I built a low-cost CAN-bus sensor for air quality/light monitoring using ESP32.

Re:I built a low-cost CAN-bus sensor for air quality/light m... by fennec-posix on Monday February 02, 2026 @04:35PM (#46861926)
I think this is really neat. Been wanting to create an ESP32-based environment monitoring system for outside to replace the cheap 915 MHz weather station I have. CAN might not be a bad technology to do this with since I don't really want to have yet more things emitting around 2.4/5 GHz
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Re:I built a low-cost CAN-bus sensor for air quality/light m... by albert007_d on Monday February 02, 2026 @04:49PM (#46862142)
This solution uses 2pair standard rj11 telephone cable(tested upto 15meters - can be longer) - one pair is for CAN-L/CAN-H and 2nd pair is for dc supply between 6v to 24v, esp32 firmware offers failsafe A/B upgrade mechanism over CAN.
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