Microprocessor Controlled 12 LED Light
We wanted a small bright LED source to illuminate the bed of our MendelMax 1.5 3D Printer. What could be simpler than a 555 controlled design (or so we thought). Turns out make the 555 produce a PWM waveform with 0-100% pulse width is not a trivial matter. This design only goes from 50% to 100%. For LEDs that's barely dimmable. Our next stab at this was an 18 LED light which worked well.
- 12VDC operation - compatible with Reprap power supplies
- PWM control of White LED brightness
- 555 Timer controls PWM
- Small Form Factor
- Four (4) 4-40 mounting holes