Replied to 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?

2 weeks, 4 days ago

Replied to 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?

1 month ago

Replied to 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.

1 month, 1 week ago

Replied to Reading a 9-bit multidrop bus on a Pi gateway: can the UART even do that?

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

1 month, 1 week ago

Replied to Python call to the latest-values endpoint hangs for two minutes on our 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…

1 month, 2 weeks ago

Replied to 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.

1 month, 2 weeks ago

Replied to Why doesn’t LoRaWAN mesh? Four sensors behind a steel warehouse never join

Can't you just put the antenna higher?

1 month, 3 weeks ago

Replied to 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.

1 month, 3 weeks ago