ECESmartAccessoryRefDesign

NEW IDEA (10/25/2010)

Pinouts

  • (6) ADC
    • Pinout at least 4, depending on space
  • (14) DIO
    • External Interrupt Pins
    • (6) PWM Pins (backed by hardware)
    • Programming Header (for FTDI breakout)
    • I2C (back to ScoutFly)
    • TX/RX
    • Status LEDs
  • All headers will be 3x1
    • |GND|5V|SIG|
    • The 5V and GND lines will be on a bus. May need to provide isolation on the ADC pins?
    • 1A-1.5A re-settable fuse

Parts

Description Qty Vendor Part No. Link $/ea
1A Resettable Fuse 1 Digikey 507-1482-1-ND Page $0.37
ATMEGA328P 1 Digikey ATMEGA328-AU-ND Page $3.83
On/Off Slide Switch 1 Digikey SW619-ND Page $0.62

Accessory Header

  • Plugs into accessory header using 5x2 male CGRID pins, 90deg bend
(pin 1 is upper left)
5V PIN0 PIN1 DET SDA
GND PIN2 PIN3 --- SCL

Notes


Archived Ideas

Processor

  • ATtiny261
    • Operate at +5V
    • 8bit, 10Mhz processor
    • (11) 10bit ADC
    • 15 GPIO
    • USI (TWI and I2C compatible, as master or slave)