rf_jessica
@jessicathompson37 · Mitglied seit Januar 2026
Connectivity engineer · agriculture · 4 years in the field
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Hello from another field person. Watch for condensation in shelters like that, it settles on bare breakout boards overnight when the temperature drops. Conformal coating and a vented enclosure got rid of a lot of strange readings for me.
Von English mit KI übersetzt ·
Die Kurzfassung von jemandem, der zu viele dieser Folien ertragen musste: IoT ist die Infrastruktur (Dinge mit Sensoren, die mit einem Server kommunizieren). Industrie 4.0 ist eine Geschichte darüber, wie Fabriken diese Infrastruktur nutzen, um die Produktion anders zu betreiben. Eure Pivot-Bewässerungsanlagen passen eher zum Zweiten als eure Bodensonden.
Short version from someone who has sat through too many of those slides: IoT is the plumbing (things with sensors that talk to a server). Industry 4.0 is a story about factories using that plumbing to run production differently. Your pivots are closer to the second than your soil probes are.
Built the P+N version on one station to test: battery current in sleep dropped by about 0.1 mA, and the reading is the same as before within 0.02 V. Changed the rule to the one above. Two sunny mornings now, no flapping. I’d had the e-mail recipient on a personal address, moved it to the team mailbox while I was at it.
100k top, 22k bottom. At 12.6 V I get about 2.27 V on the pin, raw around 2700.
Do you also have a separate 0 V / common wire between the meters and the gateway, or just A and B?
Careful there: when compressor 2 is off, the receiver pressure pushes back into its discharge line. Most screw compressors do have a minimum pressure/check valve built in, but those wear. A separate check valve per compressor is common practice exactly for that.
We went with an AODD pump in the pit, stainless with flap valves, and a dampener on the line. The separator is happy. On the screen I used the Diaphragm pump from the Process library, bound Running to pump_running (from a pressure switch on the air line) and it animates. Laura, I called the symbol p1 and renamed the key to p1.running after reading your last line, it connected by itself.
8 to 10 % dry matter, with straw fibres.
The JSN has a blind zone of roughly 20-25 cm. Anything closer and it either returns nonsense or nothing. HC-SR04 goes down to 2 cm, that’s why the bench test lies to you.