125 KHz signal
100 bds duplex communication.
The computer side uses a 18 pins PIC 16F88 which receives the commands and sends the data to the line side managed by a 8 pins 12F675
The line side is isolated from the computer side by two optocouplers.
master schematics, master components and printed board are available in pdf format
This small card uses a 8 pins 12F675 and manages up to two pilot wires of electric heaters via two opto-triacs.
slave schematics, slave components and printed board are available in pdf format
