Toaster Reflow Oven
Note - the recording frame-rate causes the light to flicker on video, but this is not actually visible in person.
After attending a Coldplay concert in 2016, I was left with a multi-color LED bracelet from the show that would never turn on again. So, I decided to tear it apart and gut it, replacing their controller with an AT-Tiny85. Using this controller along with a few transistors for controlling each LED color, I wrote firmware to once again light up the bracelet.
This project presented a large hurdle when attempting to power multiple colors at the same time. When doing this, blue would be the only color to turn on properly. In order to fix this, I designed a custom PWM loop which ensures easy brightness control for each RGB color individually, while also ensuring no two colors are illuminated at the same time. To accommodate the larger package size, a new rear housing was designed and 3D printed. Adding a push button on an interrupt allowed for multiple light modes to be cycled through, giving the Xylo braclet new life.
This project presented a large hurdle when attempting to power multiple colors at the same time. When doing this, blue would be the only color to turn on properly. In order to fix this, I designed a custom PWM loop which ensures easy brightness control for each RGB color individually, while also ensuring no two colors are illuminated at the same time. To accommodate the larger package size, a new rear housing was designed and 3D printed. Adding a push button on an interrupt allowed for multiple light modes to be cycled through, giving the Xylo braclet new life.
