DIN-5

Data

  • Board TX to 10Ω resistor
  • 10Ω resistor to DIN-5 pin 5 (current sink)

Ground

  • Board GND to DIN-5 pin 2 (shield)

Power

  • Board 3V to 30Ω resistor
  • 30Ω resistor to DIN-5 pin 4 (current source)

TRS-A

Data

  • Board TX to 10Ω resistor
  • 10Ω resistor to TRS pin 5 (ring)

Ground

  • Board GND to TRS pin 1 (sleeve)

Power

  • Board 3V to 30Ω resistor
  • 30Ω resistor to TRS pin 2 (tip)

TRS-B

Data

  • Board TX to 10Ω resistor
  • 10Ω resistor to TRS pin 2 (tip)

Ground

  • Board GND to TRS pin 1 (sleeve)

Power

  • Board 3V to 30Ω resistor
  • 30Ω resistor to TRS pin 5 (ring)

This guide was first published on Apr 26, 2022. It was last updated on May 25, 2024.

This page (Circuit Diagram) was last updated on Mar 08, 2024.

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