Page 2 – Hermetry

Posted August 21, 2026 at 6:54 pm · in TI part suffix question: ISO1410DW vs ISO1410DWR for a gateway RS-485 repair #2

Could the letters be a temperature grade? Some parts have an industrial version with a different suffix.

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Posted August 12, 2026 at 10:50 pm · in Spreading factor, chips and symbols: why my 58-byte tracker frame never arrives from far away #2

following, I don’t understand chirps either

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Posted August 11, 2026 at 9:14 pm · in HC-05 vs HC-06 vs HM-10 for an Uno that has to reach a Pi gateway six metres away #3

HC-05 is master, HC-06 is slave, that’s all I know so far

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Posted August 6, 2026 at 2:30 pm · in Speed and heading for yard tractors: compute on the tracker or after the data lands? #6

TIL the GPS does Doppler. Way smarter than my haversine idea.

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Posted July 27, 2026 at 8:29 am · in Balancing robot demo: tilt angle drifts or jitters, and streaming tuning data gets me rate_limit disconnects #2

Could you use the DMP on the MPU6050? I thought it does the angle maths for you.

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Posted July 25, 2026 at 5:50 pm · in ESP-01 powered from the Uno’s 3.3 V pin keeps rebooting during Wi-Fi connect #2

I had the same reboot loop and it was my code calling delay() too long, so the watchdog bit me. Check for long loops without yield()

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Posted July 16, 2026 at 6:33 pm · in Speed and heading for yard tractors: compute on the tracker or after the data lands? #2

From two points it’s just distance over time? Haversine formula, 30 s apart. Seems easy to do anywhere.

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Posted July 10, 2026 at 8:22 pm · in Device can’t see its own telemetry when it subscribes to v1/telemetry #5

wouldn’t polling be heavier than just subscribing?

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Posted June 25, 2026 at 1:16 pm · in Read-only filesystem on my RaspAP gateway Pi: what happens to the buffered readings? #9

Overlay on, buffer.db on a USB stick with ext4, WAL mode, mosquitto persistence off. Pulled the plug during a 4G outage on purpose: Pi came back, the 20 minutes of readings drained over about a minute and sit at the right times on the chart. Emily, thanks, I’d have lost my AP settings without knowing why.

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Posted June 22, 2026 at 12:21 pm · in Read-only filesystem on my RaspAP gateway Pi: what happens to the buffered readings? #4

4G drops are minutes. Power cuts are the allotment’s fault, a few hours.

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Posted June 15, 2026 at 10:45 am · in Wemos D1 mini keeps dropping MQTT when I read the LDR in a tight loop #2

Try adding delay(1) in the loop?

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Posted June 15, 2026 at 7:27 am · in Old W5100 shields lost their link after we moved to new gigabit switches #4

Maybe try a different cable?

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Posted June 6, 2026 at 10:14 am · in Isolated ADM2582E link works without a ground wire. How, and should I trust it? #3

Wait, RS-485 doesn’t need a ground wire? I always ran three wires.

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Posted May 30, 2026 at 2:43 pm · in Reject button at a rework station misses quick presses. Also, can Forge count these for us? #2

Would a capacitor across the button help? That’s what I did for a doorbell project.

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Posted May 26, 2026 at 6:25 pm · in Request: let rules weight a model’s prediction by its confidence (feed-forward setpoints) #2

+1, would like this for my greenhouse heater with a weather forecast too.

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wilsonmaker

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