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Step 15This alarm clock was simply too bright
When I bought this blue display alarm clock, I didn't know it was that bright... it may be interesting in a store but I don't like my alarm clock to illuminate my entire room. Why not make it dimmer?
Steps:
- Opening the case
- Finding the current limiting resistors
- Changing them
- Closing the case
Finding the current limiting resistors is the only tricky part of this hack. I searched for the biggest resistors on the board. There were 2 0.5W 22 ohms near the display and they were hot. All the other resistors were 0.25W. I took a chance and I decided to replace them with higher values ones.
Tip: I needed about 44ohms @ 1/2W and I only had 0.25W resistors. I parallelled a 75 and a 100 ohms to make a 0.5W 42 ohm one.
Steps:
- Opening the case
- Finding the current limiting resistors
- Changing them
- Closing the case
Finding the current limiting resistors is the only tricky part of this hack. I searched for the biggest resistors on the board. There were 2 0.5W 22 ohms near the display and they were hot. All the other resistors were 0.25W. I took a chance and I decided to replace them with higher values ones.
Tip: I needed about 44ohms @ 1/2W and I only had 0.25W resistors. I parallelled a 75 and a 100 ohms to make a 0.5W 42 ohm one.
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