“It was December 2020, deep into the second Covid-Lockdown and I thought about how to give away some smiles for christmas to my family and friends. Besides, I wanted to have some fun with pcb-layout and microcontrollers.
The result: This cute small and relatively simple tree pcb with a Attiny44 and a 4x5 fully customizable led-matrix.
16/29: “This was the best christmas gift this year and you stole the show for everyone else.”
10/29: “No chance you made this yourself only for us!”
02/29: “Can you make it go slower?” (Grandmas)
01/29: “I’ve got a torn open envelope, cool card but which tree are you talking about?” (Thanks Deutsche Post 📯)
A few weeks later I thought, maybe you would have fun with it as well as a present or a small project to learn about pcb-layout and µCs, so I made some changes to improve the design, came up with a new and not christmas-limited version and here we are. Have fun! 🎈
The PCB, self made or ordered
All electronic components from the BOM (here on findchips)
Programmer (see Step 5)
Tools must have
Soldering Iron or Reflow Oven or alternative (see Step 4)
Tools nice to have
PCB holder / third hand
A steady hand”