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Hardware_e/LED_Tile_e/328_e

Last-modified: 2012-04-23 () 21:07:51 (2861d)

ATmega328P version

LT328.jpg

For operation in 3.3V supply voltage, this is compatible with ArduinoPro?(ATmega328/3.3V/8MHz; pro328). Burn the bootloader of "ATmegaBOOT_168_atmega328_pro_8MHz" in Arduino IDE ), and select board of "ArduinoPro? (3.3V, 8MHz) w/ ATmega328 (pro328)". You can use it with same manner of ArdunoNano version.

  • Specs:
    • ATmega328P implementation using internal 8MHz osc.
    • Basically four directional communications are OK, but not checked.
    • Accelerometer via I2C bus, (FreescaleMMA7455 can be used, but not checked.
    • Tactile switch or Piezzo sounder can be mounted, but this disables one (right) direction communication.
    • Use supply voltage of 3.3V with MMA7455, with resistor of 270 ohm. Without MMA7455, supply voltage of 5V can be used with resistor of 1k ohm.
    • Arduino standard USB-UART programming with DTR reset can be used using two communication channels.
    • Communication terminals in each edge consists of a pair of male and female 3p header connectors, VDD, GND, TX&RX in each.
  • Restrictions:
    • Communications in half duplex (either transmit or receive in one time), and should be implemented by software.
    • I2C communication should be implemented by software.
  • PCB outline
    LT328_pcb.png
  • BOM (Bill of Materials):
    • ATmega328P (QFP32pin)
    • 270 ohm(1608 size in milli meter (or 0603 size in inch)) x8
    • (optional) MMA7455, 4.7k (1608size) x2
    • (optional connector) 3p L-angle male&female header connector xeach 4, or magnet connector