Hardware - synfinatic/teensy-dsc GitHub Wiki

Hardware Connections

Whenever possible, I've tried to use industry standard pin outs to maximize compatibility with other systems. Before you attempt any connection, please verify your pin outs to ensure you don't damage your encoders, TeensyDSC or other equipment!

RJ45 Encoder Jack Pinout

This is the RJ45 jack on the TeensyDSC for connecting to your two encoders. This means you will use a simple Y cable to connect your encoders to the TeensyDSC. image

  1. Azimuth (or RA) Channel B Signal
  2. Azimuth Encoder +5V Power
  3. Azimuth Channel A Signal
  4. Azimuth Ground
  5. Elevation (or Declination) Channel B Signal
  6. Elevation Encoder +5V Power
  7. Elevation Channel A Signal
  8. Elevation Ground

US Digital S2 Encoder Pinout

The S2 encoders should have a nice little sticker with the pinout on them, but for reference here it is. Note that the shaft is pointing down (not visible).

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  1. Ground
  2. Index (not connected)
  3. Channel A
  4. +5V Power
  5. Channel B

RJ9 Encoder Breakout Pinout

If you are interested in easily connecting your encoders to your DSC, I'd recommend using this S2 to RJ9 breakout board which solders directly to the S2 encoders and has a RJ9 jack for easy connections. It also makes it easy to disconnect the wires to the encoders when you break down your scope for transport.

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  1. Channel B
  2. +5V Power
  3. Channel A
  4. Ground

Barrel Power Jack

The TeensyDSC uses a 2.1mm barrel jack for powering off of 12V DC. Note, you should use either the 12V barrel connector OR the USB port for powering the TeensyDSC!

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