Respondidos 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?

hace 2 semanas, 4 días

Respondidos 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?

hace 1 mes

Respondidos 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.

hace 1 mes, 1 semana

Respondidos ¿Leer un bus multipunto de 9 bits con una pasarela Pi: puede la UART hacerlo?

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

hace 1 mes, 1 semana

Respondidos La llamada en Python al endpoint de últimos valores se cuelga dos minutos en nuestra Pi

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

hace 1 mes, 2 semanas

Respondidos 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.

hace 1 mes, 2 semanas

Respondidos ¿Por qué LoRaWAN no usa malla? Cuatro sensores detrás de un almacén de acero nunca se conectan

Can't you just put the antenna higher?

hace 1 mes, 3 semanas

Respondidos 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.

hace 1 mes, 3 semanas