Réponses à 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?

il y a 2 semaines et 4 jours

Réponses à 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?

il y a 1 mois

Réponses à 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.

il y a 1 mois et 1 semaine

Réponses à Lire un bus multipoint 9 bits via une passerelle Pi : l'UART peut-elle vraiment le faire ?

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

il y a 1 mois et 1 semaine

Réponses à L'appel Python à l'endpoint des dernières valeurs bloque pendant deux minutes sur notre 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…

il y a 1 mois et 2 semaines

Réponses à 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.

il y a 1 mois et 2 semaines

Réponses à Pourquoi LoRaWAN n'est-il pas en maillage ? Quatre capteurs derrière un entrepôt en acier ne se connectent jamais

Can't you just put the antenna higher?

il y a 1 mois et 3 semaines

Réponses à 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.

il y a 1 mois et 3 semaines