Max7219 and a LED matrix with Arduino, blinking LED-s the hard way

DIY led matrix

DIY 7805 PSU

 First trial to make the 7219 work with Arduino. I had ordered the MAX7219-s a good few months ago, but still hadn't made anything with them. So this is mi stab at making them work. In mi junk bin i had a bunch of perf board and white led-s so just a matter of soldering together I thought. Well soldering is the easy part but to mi surprise it took a good hour or so to solder the 7805 coupled with 7219 and the led matrix together.

So mi first attempt. To replicate or try it for yourself you need.

• Soldering iron
• 30 LED-s
• MAX7219 IC
• 7805 Voltage regulator
• 10 uF and 100 uF capacitors
• jumper wires

Max7219 connected with DIY 5x6 Led matrix

LCD and Arduino, getting readable output

16x2 on the top and 20x4 LCD on the bottom

The 16x2 LCD is salvaged from a 48V PSU that had lost it's magic smoke in a spectacular way. So guud guy that i was i hauled it home and dismantled it before it met it's end in a bin.