wireless 8 buttons project

this looks promising but ?

To be clear, you want to have eight battery-powered, bidirectional wireless devices. Each one can receive an enable command to turn a single LED on and turn on a transmitter. The device then transmits continuously a signal related to switch status. When the switch closes, the system controller detects this, sends a command to turn off both the LED and the transmitter, and sends an enable command to the next device.

Something like that?

If so, then there have to be some brains somewhere. The 8 remote transmitters can all be on the same channel sending the same code since only one at a time is enabled. But enabling them is the same as addressing memory locations. You can have the 8 receivers tuned to 8 different channels, or have only one channel and send 8 different address codes. This probably means a small microcontroller in the system controller.

- OR -

You could put a CD4017 Johnson Counter (a form of a decoded shift register) in each remote, and send only an increment signal to all remotes at the same time. A jumper in each remote would select it. In this case the signalling would be very simple (no microcontrollers required on either end) but they could get out of sync if the reception isn't perfect for all units.

ak

I like the CD4017 idea The transmitter/buttons are 8 feet or less apart
something to contemplate

Mesh network (with a host in it) -


Cheap, ~ $2 for the ESP8266 / node



Regards, Dana.