Open Wire Detection #8

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o.winkels · 2025-04-24T19:23:20+02:00

o.winkels commented

2025-04-24 19:23:20 +02:00

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label 2025-04-24 19:23:20 +02:00

o.winkels commented

2025-06-05 16:28:42 +02:00

For this year, should be done using resistors in the wiring harness.

For the next years, add footprints for pull-up/pull-down resistors (maybe on backside?)

This would also allow for directly reading PT1000 temp sensors and such.

Pull resistors unfortunately always affect signals, especially when they are low impedance.

The ideal version would include the possibility for the STM32 to dynamically pull the inputs high or low (open drain output?) periodically to see whether they are affected. We'll see how hard that is to implement

For this year, should be done using resistors in the wiring harness. For the next years, add footprints for pull-up/pull-down resistors (maybe on backside?) This would also allow for directly reading PT1000 temp sensors and such. Pull resistors unfortunately always affect signals, especially when they are low impedance. The ideal version would include the possibility for the STM32 to dynamically pull the inputs high or low (open drain output?) periodically to see whether they are affected. We'll see how hard that is to implement

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Reference: FaSTTUBe/sensor-node#8