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DETAILED DESCRIPTION
Designed by FEDEVEL Academy
We developed 28Pins to help people to learn how to design their own boards. The board is based on Arduino project and it's part of our online course called "Learn To Design Your Own Boards" at FEDEVEL Academy.
We made couple of changes to the original Arduino schematic:
- Reset improvement
- 3.3V and 5V Support
- Use it as a Programmer
- Micro USB connector
- User Button added
- DFU disable jumper
- dWire debugger support
Full Specification
1x ATMEGA328P
- FLASH: 32kB / EEPROM: 1kB / RAM: 2kB
- Clock: 16MHz (for +5V) / 10MHz (for +3.3V)
- Up to 20 input / output pins from which:
- 20x digital input/output
- 6x PWM output
- 6x Analog inputs (10bit AD)
- 1x Serial port, 1x SPI, 1x I2C
- 1x User LED
- 1x User Buton, 1x Reset Button
1x ATMEGA16U2
- FLASH: 16kB / EEPROM: 512B / RAM: 512B
- Clock: 16MHz (for +5V) / 8MHz (for +3.3V)
- 4x Digital input / output
- 2x User LED
- 1x USB
- 1x SPI
- 1x Serial port (shared with 328P)
- DFU programming support
- AVRISP MKII firmware available
And more ...
- ATMEGA328P can be programmed from ATMEGA16U2
- SPI programming support
- dWire debugging support
- On board +3.3V / 1.5A regulator
- Optional: Selection between +3V3 or +5V IO voltage
- Size: 2.7 x 2.1 inch (68.6 x 53.4 mm)
- Power input: micro USB or soldered wires
- Power voltage: +5V (from PC, tablet & mobile phone charger or an external power supply)
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