9 votes
Accepted

Wired sensor protocol for buildings monitoring sensors?

I would either go with RS485 or CAN because with long buses a lot of noise can be picked up. These are the most noise resistant as both of them use differential, twisted data lines. RS485 supports ...
Bence Kaulics's user avatar
2 votes

wired remote control of old equipment

Assuming you can drive this via MIDI as @jcaron suggests to get it to do what you want, you are still going to have to write a lot of code here. Some key points Booking/Locking, you are going to need ...
hardillb's user avatar
  • 12.6k
1 vote

Receiving doorbell notification on Zigbee or MQTT from an electro-mechanical ding-dong

Yes, you could find something that can trigger on the voltage. But you'll have to power that too. Consider this alternate solution (maybe easier). Get a vibration sensor, such as the Samsung ...
kalyanswaroop's user avatar
1 vote

Receiving doorbell notification on Zigbee or MQTT from an electro-mechanical ding-dong

You can use a nodemcu with an external trigger circuit to develop your solution. Connect a relay or an electronic trigger circuit to generate trigger signal for the NODEMCU. So when the door bell ...
Amal G Jose's user avatar
1 vote

Has any one developed M-Bus protocol on STM controller?

You could try mbus/libmbus that uses bitbanging so it only needs 4 GPIO. You could use it on almost any microcontroller. It was not updated for 6 years but you could give it a go, even update it if ...
Bence Kaulics's user avatar

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