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32 lines
1.2 KiB
32 lines
1.2 KiB
10 years ago
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Keyboard Lamp
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=============
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This is a keyboard lamp with adjustable brightness, that remembers last brightnbess level even when powered off.
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I've made it as a replacement for my broken ThinkLight.
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It uses ATtiny13, and the schematic is something like this:
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10 years ago
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Vcc
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,---------------+
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| +----u----+ |
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'--| |--'
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| ATMEL | Buttons
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,--[180R]-|<|---| |--BRT----o/ o---,
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| LED2 | ATtiny | |
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| -| 13 |--DIM----o/ o---+--- GND
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GND | |
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,--| |----,
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| +---------+ | LED1
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| | ,-|<|--[47R]-- Vcc
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GND | |
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'-[10k]-|< Transistor NPN
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GND
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10 years ago
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LED1 is the bright white LED, LED2 is an indicator that the brightness has been saved. You can leave LED2 out if you want.
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10 years ago
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**Fuses** and other settings can be found in the Makefile.
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