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  1. Here's another differential ADC code for the...

    Here's another differential ADC code for the Teensy and Teensy++:



    #define MUX_1V1 0b011110 // works for both
    #define ADMUX_MASK 0b11111 // MUX4..0 in ADMUX works for both
    #define...
  2. From the measurements above, it looks like my...

    From the measurements above, it looks like my alligator-clip-breadboard circuit has about 8 counts of noise. At x200 gain and 2.56V AREF, 1 count is 2.56/512/200=25uV, so that's already...
  3. Using Differential ADC atmega32U or at90usb1286 (Teensy or Teensy++) w/Thermocouple

    I've been fiddling with the x1 X10 and X200 gain differential ADC on the Teensy++ and hooked it up to a Type K thermocouple. Here's my code so far:



    /* SPICE-ish Connections:

    USBcable...
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