Parallel port relay control for OpenBSD.
1.The hardware
I’m using kit122 from neomontana bulgaria http://hobby.neomontana-bg.com/kit122.htm
Assembled circuit kit122circuit diagramconnect to pcpcb circuit

1. VT1÷VT4 - Transistor 2Т3512Г - 4 quantity
2. VD1 - Diode 1N4001 - 1 quantity
3. VD2, VD4, VD6, VD8 - Light diode - 4 quantity
4. VD3, VD5, VD7, VD9 - diode 1N4148 - 4 quantity