ADC Block Functional Diagram

• Signal Inputs - Four single inputs are available. The reference

voltage for each is produced internal to the ADC under software

control; do not exceed 3.3V input to these pins!

• Differential Channel Setting Table - Use two inputs to create a

differential pair. Useful for eliminating noise in some sensors or

measuring very small signals. This table shows the channel options

for the “getDiffResult(channel)” function.

• I2C Address Select - Apply solder to only one of the four jumpers to

select the address. Do not short two of these at once. Bad stuff will

happen.

• I2C Bus Select - Change both of these jumpers to select between

routing the I C signals to bus 6 or bus 1. Bus 1 is the default (and

preferred) channel, as it has no other system devices on it. Bus 6 is

shared with some internal devices, but if you wish to use this block

with the Arduino IDE, you’ll want to change these jumpers so the

solder blobs connect the bottom pad with the center pad.

• 3.3V 150mA Supply - This supply provides an on-board reference for

the ADC, and can power small sensors (for example, potentiometers

or temperature sensors).

Using the ADC Block

To use the ADC Block simply attach an Intel Edison to the back of the

board or add it to your current stack. Blocks can be stacked without

hardware but it leaves the expansion connectors unprotected from

mechanical stress.

ADC Block Installed

We have a nice Hardware Pack available that gives enough hardware to

secure three blocks and an Edison.

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