fw_owen

@owen_t42 · Joined April 2026

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Embedded developer · agriculture

Topics: 6
Replies: 20
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Posted June 11, 2026 at 3:00 am · in Reject button at a rework station misses quick presses. Also, can Forge count these for us? #3

Cap helps with bounce, not with missed presses. If loop() is busy elsewhere for 200 ms, a 100 ms tap is gone either way.

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Posted June 2, 2026 at 4:40 am · in Teaching an Arduino Uno to guess room occupancy – can it learn on its own or do I need my data out first? #4

Training needs every weight, its gradient and a pile of example data in memory at once, many passes. Inference is one pass, multiply and add, and the weights can sit in flash.

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Posted May 26, 2026 at 3:38 am · in Teaching an Arduino Uno to guess room occupancy – can it learn on its own or do I need my data out first? #2

Training on an Uno: crazy, yes. 2 KB of RAM. Running a tiny model that was trained somewhere else: very doable.

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Posted May 11, 2026 at 2:25 pm · in OTA for an STM32 main MCU when the ESP32 next to it is the one talking MQTT #4

Very clear, thanks. What happens if the 15 minutes run out halfway through a download on a weak link? Some of our fields have one bar.

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Posted April 15, 2026 at 11:59 pm · in Pump relay on an ESP32 clicks at boot and the board switch says On when it isn’t #2

GPIO 2 is a boot strapping pin, it toggles during boot. That’s probably your click.

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