Thursday, December 1, 2011

DIY Making Digital Clock using AT89S51 (Jam digital)

For  long time I don't update my blog, Here I try to ask to make digital clock using AT89S51. it's very simple circuit to creating digital clock.

For this time, I change size 2x3cm 7 segment into 10x20cm. but I make my self the 7 segments. I use 2pcs LED each segment to saving cost and use drinking pipe with white color. It makes like a neon when the LED is shine. You can use any LED color as you like.

Here is the visualization of Digital Clock:

Figure 1. Glow in the dark
Your can make the 7 segment  by dot PCB as a board. You can see it as picture below.

Figure 2. Prototype board
Circuit diagram you can download it here
Hex file can be download here.

Good Luck


  1. Thanks for sharing such kind of nice and wonderful collection......Nice post Dude keep it up.
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  2. Can you update again?
    the Circuit diagram and Hex file