mattrsch wrote:You're on the right track. you basically cut the ground wire for the laser power supply and insert the shunt on that line. The current meter input + will go on the tube side of the shunt and the - will go on the power supply side of the shunt. The input + on the power module will tie to +5V somewhere. Your laser power supply should have one at the front. Definately don't hook it up to the laser tube +
mattrsch wrote:Yes, reconnect both cut ends to the shunt. The ground on the laser power supply will go from the power supply to one side of the shunt, then from the other side of the shunt to the ground side of the laser tube.
mattrsch wrote:The number it is showing is most likely mA. How powerful is your laser tube? Most 40W tubes should be limited to about 18mA. Because of this I never go above 60% power on my controller
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