Flash firmware to 3D printer without boot loader

In this video I show you how I flashed my Tronxy X1 Melzi board with an updated version of the Repetier Firmware. This is not as easy as it could be, since the Melzi board is shipped without a boot loader. The Melzi board however does have a In-System programming (ISP) header. To use this though you need an AVR programmer, which I did not have, it is possible though to programme an Arduino as an ARV programmer.

The steps I go though are

1. Programme an Arduino as an AVR programmer (note, I did not have an Arduino so I used an ATMEGA328 chip, which is essentially all an Arduino is. I followed the guide here http://start.shrimping.it/project/blink/build.html

2. Setup the Arduino IDE to programme the Melzi board, The Sanguino board manager can be downloaded from here https://github.com/Lauszus/Sanguino

3. Setup the latest Repetier Firmware, you could also use Marlin at this stage https://www.repetier.com/firmware/v100/

4. Flash new firmware over the ISP header using Arduino as AVR programmer

5. Burn boot loader to the Melzi board (optional)

6. Flash new firmware over USB (optional)

Keith's Pi Tutorials web site http://www.pi-tutorials.co.uk Twitter https://twitter.com/pitutorials ... https://www.youtube.com/watch?v=bdgsKXQVh1A