For the Boldport Club project “The Matrix” I used hot air soldering for the first time. After some experimenting and with help from Boldport Club members, it worked really well. I could colder the 120 LEDs in less than 10 minutes to the board.
I made a video about the process. Please keep in mind, I am new with this process, so this is absolutely no instruction video how things should be done. I may be absolutely wrong. 😀 Enjoy!
Here a list of the objects and tools you can see in the video:
Today I tested a number of SMD LEDs for the plant watering sensor project. I soldered all 13 LEDs I shortlisted onto a small board and connected it to an Arduino Zero Pro. So I could try the different flashing styles I planed to use more or less automatically. That way I could focus on the LED flashing itself, without being distracted by switching cables.
This is the board I made. Very simple but functional. I used red and blue male header to mark the anode and cathode of the LEDs. There is a sticker on the bottom with the LED numbers on it.
I mounted everything on a very small breadboard and did all connections to the Arduino.
For the demo video in my previous post, I did not really choose nice melodies. So I created a small composition using the outmoded sequencer:
For this music I connected the outmoded sequencer directly, after the potentiometer for the volume control, to an audio interface. Now I recorded the sound of the sequencer while I changed the matrix. After recording I added additional elements, like the percussion and bass lines.