1-Day Project: Build Your Own Arduino Uno for $5
Why Arduino Stack Exchange recommends it
Arduino Stack Exchange users point people to it when they want to build a standalone ATmega328 board on a breadboard, and they also cite it as the guide behind their own homemade boards.
Recommended by 2 people across 2 different months, 2015 to 2020.
What it is
Julian Ilett builds a working Arduino Uno equivalent on a breadboard from an ATmega328P with the Uno bootloader, a 16 MHz crystal and a CH340G USB-to-serial converter. He explains that cheap clones make it hard to save money, but assembling one teaches how the board works.
What people said
Recommends Greenonline · 2015-07 · Arduino Stack Exchange · on “Can I use an ATmega328 alone without anything and what is the max voltage I can power the atmega328 with”
If you take a look at the Standalone Arduino [LINK] on the Arduino website, then this is what you require: [LINK] Note that there is one slight error in the guide, which I have highlighted here, Arduino Standalone - photo shows incorrect pin wired to MOSI [LINK] . There is a video on how to achieve, more or less, the same thing, 1-Day Project: Build Your Own Arduino Uno for $5 [this video] .
Recommends Greenonline · 2015-07 · Arduino Stack Exchange · on “Suggest me an Arduino development board, with a removable ATmega chip?”
The ultimate solution would be to build it yourself! [LINK] Arduino has an excellent step by step guide on how to build a standalone Arduino [LINK] , using a ATMega328, on a breadboard. Now everything is removable, not just the chip. Note that there is one slight error in the guide, which I have highlighted here, Arduino Standalone - photo shows incorrect pin wired to MOSI [LINK] . There is a video on how to achieve, more or less, the same thing, 1-Day Project: Build Your Own Arduino Uno for $5 [this video] .
Recommends Gregulimy · 2017-08 · Arduino Stack Exchange · on “Standalone 328p Programming with CH340G programmer”
I have made a standalone arduino board with a Atmega328p w/ Uno bootloader taking inspiration from this video [this video] However, when I try to program mine all I get is "Problem uploading to board". I have confirmed that everything on the board works and that I could upload Blink through my arduino Uno via ArduinoISP but I would like to use this adapter to program the board instead. Other things that I have tried: Swapping Tx/Rx from adapter to board Adding 100nF capacitor on DTR to RST Trying without DTR (The board also has a 10k pullup resistor on the RST line) Burning a new bootloader after programming with Arduino as ISP Any suggestions are greatly appreciated. Thanks, [LINK] Verbose Uploa
Cites haxpanel · 2016-03 · Arduino Stack Exchange · on “Custom built Arduino is not working - double blinks”
I've made a home-made Arduino based on this video [this video] . The problem is that I can't upload anything, it doesn't react, only the LED double blinks in every second. What does that mean? How to fix it? Thanks. Update: [LINK]
Cites Niyoj oli · 2020-10 · Arduino Stack Exchange · on “How can I program my self made Arduino board using USB to TTL converter?”
@Majenko Can't I program using USB to TTL converter? I watched this video and designed my board. [this video] . He didn't use those ICSP pins.