Analog Plug

The Analog Plug is an 4-channel 12- to 18-bit ADC connected via I2C. It’s based on the MCP3424 chip.

There is a 2x6-pin female header on the side, with the 4 differential analog inputs as well as GND, +3V, PWR, and IRQ. The Breadboard Connector can be used to hook up to the first 3 analog channels, GND, and +3V.

An I2C bus running at 3.3V is used for I/O, with all the power and signal lines brought out to to both sides of the board to allow daisy-chaining with other I2C-conformant boards.


There are two solder jumpers to configure each plug for one of the following 7-bit I2C addresses:

More addresses are supported by using other combinations, as described in the MCP3424 datasheet.

Header Pinouts

Design Info

Dimensions: 21.1 x 24.1 mm
CadSoft EAGLE design files: see below.
This plug can be operated at 5V as well as 3.3V.

This board uses the conventions of a JeePlug and can be used with the ports on a JeeNode. It can also be used with other boards and MCU’s, if you hook it up properly and adapt the interface code for it.

How to Get It

See Also

The previous version was lab/AP1.

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