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

Wireless 433mHz with Arduino, hitting the radiowaves

433mHz sender unit(left) and receiver unit (right)

I picked a pair of these up for 0.99$ each, so who can resist the tempation.