You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
1.2 KiB
31 lines
1.2 KiB
11 years ago
|
Keyboard Lamp
|
||
|
|
=============
|
||
|
|
|
||
|
|
This is a keyboard lamp with adjustable brightness, that remembers last brightnbess level even when powered off.
|
||
|
|
|
||
|
|
I've made it as a replacement for my broken ThinkLight.
|
||
|
|
|
||
|
|
It uses ATtiny13, and the schematic is something like this:
|
||
|
|
|
||
|
|
Vcc
|
||
|
|
|
|
||
|
|
+-------------+
|
||
|
|
| |
|
||
|
|
| +---u---+ |
|
||
|
|
+--| |--+ Buttons
|
||
|
|
| |
|
||
|
|
+--[180R]-|<|---| |--BRT----o/ o---+
|
||
|
|
| LED2 | | |
|
||
|
|
| --| t13 |--DIM----o/ o---+--- GND
|
||
|
|
GND | |
|
||
|
|
+--| |----+
|
||
|
|
| +-------+ | LED1
|
||
|
|
| | +-|<|--[47R]-- Vcc
|
||
|
|
GND | |
|
||
|
|
+-[10k]-|< Transistor NPN
|
||
|
|
|
|
||
|
|
GND
|
||
|
|
|
||
|
|
LED1 is the bright white LED, LED2 is an indicator that the brightness has been saved. You can leave LED2 out if you want.
|
||
|
|
|
||
|
|
**Fuses** and other settings can be found in the Makefile.
|