+ X02 Library Element
+ X02 Pinout
+ using X02 FPGA
+ SPI connections
+ pinout updates
+ controller connections
+ USB3340 Library Element
+ TL1105 pushbutton datasheet and library element
+ ADC pins in controller pinout
+ bandpass  frequency adjust resistor calculations
+ micro SD card holder datasheets
+ R and C values
+ decoupling capacitors
+ pullup resistors
+ ADC connected