So the ideal solution is to power the potentiometer from one GPIO pin on the microcontroller ... replacing all but the most-significant bit of the R-2R DAC.) Another tool for the toolbox.

By connecting his scope to a pin that was toggled on and off with /sysfs he found – to his horror – the maximum speed of the BBB’s GPIO was around three and a half kilohertz. Something had ...

see the entire a 12-bit 1MSPS SAR-ADC on UMC 40nm LP, with 10-channel GPIO integrated datasheet get in contact with a 12-bit 1MSPS SAR-ADC on UMC 40nm LP, with 10 ...