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Complete Bike Light Dimmer Project
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Twin INFORMATION |
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| Specifications |
- 4 to 20 volts input range
- Compatible with NiMH, NiCad, or SLA
- Compatible with most single or dual lamp systems
- Compatible with halogen lamps up to 50 watt (20 watt recommended)
- 5 power levels
- Battery reverse protection
- Power memory (remembers last power setting)
- Dim up to extend bulb life
- Emergency flashing modes
- Bulb fail detect - auto switch to good bulb
- 99% efficiency
SOURCE CODE Download HERE
(Solo / Twin) for 12C508 microcontroller
HEX CODE
Download HERE (Twin) for 12C508
microcontroller
| REF | PART | FUNCTION | VALUE | Digikey Part # |
| U1 | MICROCONTROLLER | 12C508A | PIC12C508A-04I/P-ND | |
| U2 | REGULATOR, Low Dropout | 3.3V, LP2950 | LP2950ACZ-3.3-ND | |
| C1 | CAPACITOR, Electrolytic | Power Filter | 22uF, 25V | |
| C2 | CAPACITOR, Tantalum | V Reg Feedback | 10uF, 25V | |
| C3 | CAPACITOR, low ESR | Decoupling | 0.1uF | |
| R3 | RESISTOR, 1/8 W | Bulb Sense | 91K 5% | |
| D1 | DIODE, Signal | Reverse Protect | 1N4148 | |
| D2 | DIODE, Zener | Pin 3 Protection | 3.0V | |
| FET | N CHANNEL HEXFET | Current Switch | IRLIZ44 | IRLIZ44N-ND |
| Button | Pushbutton, Momentary | On / Off / Level | Normally Open |
