M-Bus serial data cable shematics
Requirements:
- IC 74HC04
- Voltage regulator 78L05
- Capacitor 470µF
- Capacitor 47F
- Transistor BC239C
- 2x Resistor 10 kOhms
- 2x Diode 1N4148
- Sub-D9 plug
- mobile phone connector
- wires
Shematics
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