Include use of either TRS or TRRS
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@ -68,8 +68,7 @@ Apart from diodes and key switches for the keyboard matrix in each half, you
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will need:
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* 2 Arduino Pro Micro's. You can find theses on aliexpress for ≈3.50USD each.
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* 2 TRRS sockets
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* 1 TRRS cable.
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* 2 TRRS sockets and 1 TRRS cable, or 2 TRS sockets and 1 TRS cable
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Alternatively, you can use any sort of cable and socket that has at least 3
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wires. If you want to use I2C to communicate between halves, you will need a
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@ -83,7 +82,7 @@ A speaker can be hooked-up to either side to the `5` (`C6`) pin and `GND`, and t
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Wiring
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------
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The 3 wires of the TRRS cable need to connect GND, VCC, and digital pin 3 (i.e.
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The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and digital pin 3 (i.e.
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PD0 on the ATmega32u4) between the two Pro Micros.
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Then wire your key matrix to any of the remaining 17 IO pins of the pro micro
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