{"id":2879,"date":"2020-02-18T23:39:14","date_gmt":"2020-02-18T14:39:14","guid":{"rendered":"https:\/\/programresource.net\/?p=2879"},"modified":"2020-02-18T23:39:17","modified_gmt":"2020-02-18T14:39:17","slug":"qfp%e3%81%a7%e3%81%84%e3%81%84%e3%81%ae%e3%81%a8oled%e3%83%87%e3%82%a3%e3%82%b9%e3%83%97%e3%83%ac%e3%82%a4%e3%81%a7%e5%8d%98%e4%bd%93bootloader%e6%9b%b8%e3%81%8d%e8%be%bc%e3%81%bf%e6%a9%9f","status":"publish","type":"post","link":"https:\/\/programresource.net\/en\/2020\/02\/18\/2879.html","title":{"rendered":"Stand alone ATMEGA328P-AU blotloader writer"},"content":{"rendered":"\n
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ATMEGA328P-AU is small chip used in Arduino Nano, and chip can be purchased and used for own projects.<\/p>\n\n\n\n

When designing circuit board, I don’t want to waste space for pattern just to burn bootloader, which is usually only used once for most of the time.<\/p>\n\n\n\n

I use kit sold from aitendo store in Japan to burn bootloader (sorry, not shipped overseas).<\/p>\n\n\n\n

http:\/\/www.aitendo.com\/product\/15799<\/a><\/p>\n\n\n\n

This kit comes with socket for ATMEGA328P-AU and circuit board and some parts. After building kit, connect with Arduino with bootloader burn sketch, then place chip on socket and burn bootloader to ATMEGA328P-AU chip.<\/p>\n\n\n\n

Since original sketch output result to serial port, I added OLED display so it can run stand alone. Connections from Kit to Arduino Nano is as follows (ICSP pin on Kit). And I2C connection from Nano to OLED display.<\/p>\n\n\n\n

QFP<\/td>Nano<\/td><\/tr>
5V<\/td>5V<\/td><\/tr>
GND<\/td>GND<\/td><\/tr>
MISO<\/td>D12<\/td><\/tr>
MOSI<\/td>D11<\/td><\/tr>
SCK<\/td>D13<\/td><\/tr>
RST<\/td>D10<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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OLED display shows burn status. Place chip on socket, close lid, power up Arduino Nano and it will start burn process.<\/p>\n\n\n\n

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Movie in action.<\/p>\n\n\n\n

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