Category Archives: microcontroller

SAM-ICE connector pinout

The pin labeling is in the user guide, but the connector numbering was ambiguous. This photo and table snippet from the user guide shows the pinout. Click to enlarge.

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Implementing I2C

The ATmega32u2 doesn’t have a two-wire interface (as far as I can tell) or I2C, so this method was used to have an I2C bus. The circuit shows the SCL line, and the same circuit is duplicated for the SDA … Continue reading

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Programming the ATmega32U2

This is a low cost microcontroller, less than $5 in a qty of 1. ATmega ready-made boards are cheap, around $20, and this variant doesn’t need a specialist programmer tool (just uses USB). The board in the photo is documented … Continue reading

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