Geantwortet auf Sensors on campus lamp posts with no wiring, can we power them wirelessly?

OK so batteries. Does Hermetry City handle that or do I need something else?

vor 2 Wochen, 4 Tagen

Geantwortet auf Eight meters on 30 m of RS-485 at 9600 baud: do I need termination, or is it something else?

Does cable length really matter at only 9600 baud?

vor 1 Monat

Geantwortet auf Night-time bed-exit alert for a care home: which sensor, and how do I only alert between 22:00 and 06:00?

How do the night staff work, one person on a fixed station or walking around? That changes what kind of alert makes sense.

vor 1 Monat, 1 Woche

Geantwortet auf Einen 9-Bit-Multidrop-Bus über ein Pi-Gateway auslesen: Kann die UART das überhaupt?

What's the 9th bit for exactly? I've only ever seen 8N1.

vor 1 Monat, 1 Woche

Geantwortet auf Python-Aufruf des Endpunkts für die neuesten Werte hängt auf unserem Pi zwei Minuten

Had exactly this at one of our properties after the ISP turned IPv6 on. The Pi gets an IPv6 address, tries it first, the…

vor 1 Monat, 2 Wochen

Geantwortet auf SX1276 in FSK mode: what AFC, AGC, RSSI and FEI do, and why my links fail on cold mornings

Is this the same radio as LoRa? I thought the RFM95 was LoRa only.

vor 1 Monat, 2 Wochen

Geantwortet auf Warum kein Mesh bei LoRaWAN? Vier Sensoren hinter einer Stahllagerhalle melden sich nie an

Can't you just put the antenna higher?

vor 1 Monat, 3 Wochen

Geantwortet auf Uno as an I2C slave sending floats to a Mega and taking commands back: values come out garbled

Maybe you need pull-up resistors on SDA and SCL? I read I2C needs them.

vor 1 Monat, 3 Wochen