OnBoard2

OnBoad2Logo

 

Features

  • OnBoard2 is a breadboard friendly Arduino Pro clone.
  • It is Optimized for a half-size breadboard.
  • The pins are arranged side-by-side in a row for easy understandability.
  • There are two general-purpose switches. (Press to Low)
  • It has two Independent I2C pins.
  • Available digital 20 and 21 that can be used with the internal RC oscillator mode.
    (Crystal also,Please install the capacitor and crystal before the IC socket)
  • There is a power supply terminal at the end of the left and right
  • Current measuring header available.(Short jumper normally)
  • ISP 6pin header can be attached.
  • External power supply terminal.
  • FTDI basic 5/3.3V is required for upload sketch.
  • Provided Fritzing parts.(Breadboard view only)
  • Hareware support file available.
    Arduino 1.6.6 
    Arduino 1.6.5-r2
    328IntRC
    328intrc.zip (460 KB)


    Extract and copy this file to your “sketch\variant” folder
     

BOM

PartDeviceValueQtyDescription
FTDIHeader1x6 Right-angle male header 1
XTALShunt jumper.1"2when using crystal
C1,C5Capacitor0.1uF2
L13LED5mm1
IC1AVRATmega3281Bootloader needed
IC1IC socket28pin , 0.3" Row Spacing1
JP2Header40pin , 0.6" Row Spacing or 40pin IC socket30pinsFor breadboard
Q1FET2N70001
R2Resistor4.7k(1/6W+)1
R3Resistor10k(1/6W+)1
R4Resistor1M(1/6W+)1
SW1,SW2TactileLINK3
XTALResonator16MHz1if needed
Crystal16MHz1if needed
C1,C3Capacitor22pF2when using crystal

2014-11-25 11-29-46 2014-11-25 11-33-36

Minimum Configuration(Internal oscillator 8MHz)

Minium

Schematic

Pictures

2014-11-25 11-29-46 2014-11-25 11-33-36

Minimum Configuration (Internal RC Oscillator 8MHz)
Minium

Using resonator
IMG_4074

Connect resonator(between C1-C2 pads) and XTAL’s pattern.
 

Using crystal.
DSCF5337
Connect C1,C2(22pF)

To prevent a short circuit via and crystal,keep space between crystal and pcb.
DSCF5333 
DSCF5335
Connect XTAL pattern.

How to burn bootloader

Connect to the Akizuki’s I2C character LCD AQM0802A(DownloadI2C Library

 

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