TBN Atmega32U4 Board

Features

Parts Required

1 - Atmega32U4 (Digikey Part# ATMEGA32U4-AURCT-ND)

Note -  Atmega32U4-AUR is shipped with Low Power Crystal Oscillator (8.0MHz-16MHz) enabled and Atmega32U4RC-AUR is shipped with Calibrated Internal RC oscillator (8.0MHz) enabled. Since we are using external crystal, we will use Atmega32U4-AUR.

2 - Resistors

3 - Capacitors

4 - USB connector

5 - 3x2 Pin connector

6 - Push button

7 - Crystal 16MHz.

8 -  Ferrite Bead.

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To Do in Next Version

1 - Change USB micro-B connector  (eagle part in ----)

2 - Add Potentiometer for ADC sample Code

3 - Add one pull button (for Arduino USB keyboard code, Arduino Mouse code, Digital Input code)

4 - Add horizontal/Vertical connector to access pins. 

5 -  Optional - Array resistor and RGB LED

6 -  Edit bootloader to add LED fadIn/Out when bootloader is running

7 - Sample code for ISP, Rx/Tx, Software Rx/Tx

8 - Hardware Rx/Tx pins

USB  connenctor used (eagle lib in sparkfun library)

https://www.sparkfun.com/products/8533


USB protection

http://www.st.com/web/en/resource/technical/document/datasheet/CD00001361.pdf

digikey part number - 497-2727-5-ND

Power jack

https://www.sparkfun.com/products/12748






Next Version Improvement

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