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