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Welcome to the dac_shield wiki!
This is a work in progress. If you have a specific question which isn't answered here, please leave a comment and we'll add it in!
TODO: link to rev 3 and rev 4 photos
- Adjustment potentiometer - The direction of the adjustment pot has changed. In Rev 4, turning the pot clockwise increases gain and turning counter-clockwise decreases gain. The pot has also been labeled with a "+" and "-" in Rev 4
- Minor routing changes, improved silkscreen size and clarity
Equipment Needed:
- Power DAC Shield
- Dual-output power supply or two batteries
- Arduino Uno, Duemilanove, Mega, or compatible board
- Oscilloscope
The easiest way to get a dual output power supply is to connect two 9 or 12v batteries in series where the middle junction is ground.
The most common split rail power supply involved a 12V center tapped transformer, bridge rectifier and large filtering capacitors.
If you don't have a dual-output power supply, two single-output, isolated power supplies can be used TODO: Add notes about connecting the shield to two bench supplies
TODO: Add schematic and connection instructions_
TODO: Add instructions and notes about loading the test sketches