japanino

Last update: Fri May 15 22:19:20 2026

I'm the happy owner of a rare Japanino.

Presentation

A small minor Japanese board, clone of Arduino, and that I bought years ago to support Japan industry.

Points of interrest

Well it's a rare Arduino clone, with a atmega168 and a 8MHz crystal, and a CP210x USB to UART Bridge.

Implementation

Integration with recent Arduino IDE 2.3+

Pick the "Arduino NG or older"

BEWARE: the Arduino runs at 16MHz but Japanino is 8Mhz so 2x slower

Integration in legacy Arduino IDE

Edit the \arduino-1.6.13\hardware\arduino\avr\boards.txt:

##############################################################

atmegang.name=Arduino NG or older

atmegang.upload.tool=avrdude
atmegang.upload.protocol=arduino
atmegang.upload.speed=19200

atmegang.bootloader.tool=avrdude
atmegang.bootloader.unlock_bits=0x3F
atmegang.bootloader.lock_bits=0x0F

atmegang.build.mcu=atmegang
atmegang.build.f_cpu=16000000L
atmegang.build.board=AVR_NG
atmegang.build.core=arduino
atmegang.build.variant=standard

## Arduino NG or older w/ ATmega168
## --------------------------------
atmegang.menu.cpu.atmega168=ATmega168

atmegang.menu.cpu.atmega168.upload.maximum_size=14336
atmegang.menu.cpu.atmega168.upload.maximum_data_size=1024

atmegang.menu.cpu.atmega168.bootloader.low_fuses=0xff
atmegang.menu.cpu.atmega168.bootloader.high_fuses=0xdd
atmegang.menu.cpu.atmega168.bootloader.extended_fuses=0x00
atmegang.menu.cpu.atmega168.bootloader.file=atmega/ATmegaBOOT_168_ng.hex

atmegang.menu.cpu.atmega168.build.mcu=atmega168

## Arduino NG or older w/ ATmega8
## ------------------------------
atmegang.menu.cpu.atmega8=ATmega8

atmegang.menu.cpu.atmega8.upload.maximum_size=7168
atmegang.menu.cpu.atmega8.upload.maximum_data_size=1024

atmegang.menu.cpu.atmega8.bootloader.low_fuses=0xdf
atmegang.menu.cpu.atmega8.bootloader.high_fuses=0xca
atmegang.menu.cpu.atmega8.bootloader.file=atmega8/ATmegaBOOT-prod-firmware-2009-11-07.hex

atmegang.menu.cpu.atmega8.build.mcu=atmega8

## Japanino Atmega 168 + 8MHz
## --------------------------------
atmegang.menu.cpu.japanino=Japanino

atmegang.menu.cpu.japanino.upload.maximum_size=14336
atmegang.menu.cpu.japanino.upload.maximum_data_size=1024

atmegang.menu.cpu.japanino.bootloader.low_fuses=0xff
atmegang.menu.cpu.japanino.bootloader.high_fuses=0xdd
atmegang.menu.cpu.japanino.bootloader.extended_fuses=0x00
atmegang.menu.cpu.japanino.bootloader.file=atmega/ATmegaBOOT_168_ng.hex

atmegang.menu.cpu.japanino.build.mcu=atmega168
atmegang.menu.cpu.japanino.build.f_cpu=8000000L

##############################################################

Links

Helpful sources

All content on this site is shared under the MIT licence (do what u want, don't sue me, hat tip appreciated)
electrogeek.tokyo ~ Formerly known as Kalshagar.wikispaces.com and electrogeek.cc (AlanFromJapan [2009 - 2026])