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31 lines
1.2 KiB
31 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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Vcc
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+-------------+
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| +---u---+ |
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+--| |--+ Buttons
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+--[180R]-|<|---| |--BRT----o/ o---+
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| LED2 | | |
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| --| t13 |--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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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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**Fuses** and other settings can be found in the Makefile.
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