Hi there, I'm relatively new to Arduino so let me know if you need more detail:
-To digitally control analogue guitar pedals (DIY ones I've made- powered by 9V battery) with Arduino
- Using digital potentiometer to 'mimic' or track the movements of mechanical potentiometers in the circuits in the hope of eventually storing and loading preset values to the output. Is this possible??
I understand that digital pots can use buttons or other inputs to determine the resistance levels required. I will need them to receive the output voltage from a volume control of the circuit, max is around 2.55V. Eventually store the value as a preset and output it back into the circuit on command (I'm assuming a DAC would be needed?)
At the moment i'm hoping to use a MCP4131-104 SPI digital pot http://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf
V7C Big Muff using 100k volume pot for tracking movements: http://www.bigmuffpage.com/Big_Muff_Pi_versions_schematics_part3.html
If someone could explain their thought process to break down the stages for me I would be immensely grateful.