Data Sheet

3
© 2017 / Bare Conductive Ltd.
First Floor, 98 Commercial St
London E1 6LZ, United Kingdom
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• PWM Provide 8-bit PWM output.
Pins 3, 5, 6, 9, 10, 11, and 13
• SPI Note that the SPI pins are not connected to any of the digital I/O pins as they are
On the ICSP header on the Arduino Uno. This means that if you have a shield that uses SPI, but does
NOT have a 6-pin ICSP connector that connects to the Touch Board’s 6-pin ICSP
header, the shield will not work.
• LED There is a built-in LED connected to digital pin 13. When the pin is HIGH value,
Pin 13 the LED is on, when the pin is LOW, it is off.
• ANALOGUE INPUTS Provide 10-bit ADC input, returning integers from 0-1023. All analog pins have
A0-A5, A6-A11 (in addition) the same functionality as general purpose input / output (GP10) pins.
A6 – A11 are on digital pins 4, 6, 8, 9, 10, and 12 respectively.
• AREF Optional reference voltage for the analog inputs.
• RESET Bring this line LOW to reset the ATmega32U4.
OVERCURRENT PROTECTION
The Touch Board has overcurrent protection for both the USB and battery power inputs. This protects
them from trying to source too much current, which may damage them or the board. This protection
is provided by two positive temperature coefcient (PTC) resettable fuses. The USB fuse has a holding
current of 500mA and a trip current of 1000mA. The LiPo fuse has a holding current of 1100mA and a trip
current of 2200mA. If these fuses trip, you will notice that the board loses power. You should switch off the
board, and inspect it for faults, correcting any you nd. After 20 seconds the fuses should reset and you
can plug the board back in again.
PHYSICAL CHARACTERISTICS / PROGRAMMING
The Touch Board can be programmed using the Arduino IDE. More details on how to do this can be
found at www.bareconductive.com/touch-board/