Just a FYI for others who are reading this:
Generally galvo kits purchased off eBay and other sources will have one of three data header configurations:
1. Galvo amplifiers with 2-pin data headers:
Galvo amplifiers with this type of connection are low cost, low quality, and have low point-per-second (PPS) ratings. They also do not use differential comms so they are prone to noise issues.
The data header pins on these galvo amplifiers correspond to GND and +Channel.
To use this type of galvo system with a LaserShark
- Connect the GND pin of the galvo amplifier data header to the GND pin of the respective X/Y header on the LaserShark
- Connect the +Channel pin of the galvo amplifier data header to the +Channel pin of the respective X/Y header on the LaserShark
- The respective X/Y -Channel pin should remain unconnected!
2. Galvo amplifiers with 3-pin data headers:
This style of galvo amplifier data connector galvo kits seem to be the most common. Normally they ship with a data cable that can be plugged directly into the LaserShark without need to re-arrange the pins in the header but this cannot be guaranteed to always be the case.
The data header pins on these salvo amplifiers correspond to GND, +Channel, and -Channel. It is possible the order of these pins will vary thus it is important to review the data sheet accompanying these galvo amplifiers before using them as well as the silkscreen on the galvo amplifier PCB.
To use this type of galvo system with a LaserShark
- Connect the GND pin of the galvo amplifier data header to the GND pin of the respective X/Y header on the LaserShark
- Connect the +Channel pin of the galvo amplifier data header to the +Channel pin of the respective X/Y header on the LaserShark
- Connect the -Channel pin of the galvo amplifier data header to the -Channel pin of the respective X/Y header on the LaserShark
3. Galvo amplifiers with 4-pin data headers:
These are sometimes seen with higher PPS rated galvo amplifiers. and have the same pins as the 3-pin data headers but with an extra GND pin.