Tag Archives: AVR

PCB Soldering.


My team have to solder 60 PCBs (135x201mm). Also they have to use 3 type of solder wires and 2 types of soldering tips for different parts. Solder wire brand – ASAHI 1) 0.5mm 2) 0.6mm 3) 0.8mm Solder tip … Continue reading

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Wireless Factory Automation and Andon System – Slave Units


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Lots of jumper wires.


This PCB needs lots of jumper wires in three different lengths. Which is 4, 6 & 8mm.

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TL431 Shunt Regulator Calculator.


The reason for make this app is I needed to adjust the out put of some SMPS power supplies. Then when I reverse engineering it I saw the TL431 define the out-put voltage. So here it is… Download Link – https://www.dropbox.com/s/tt5k9dxxn6yd9xo/TL431%20Shunt%20Regulator%20Calculator.rar

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LED Matrix Clock + RTC DS1307 – ( Testings are done )


This new Matrix Clock Project is all okay now. Currently working on a nice enclosure for this.   VIDEO – http://www.youtube.com/watch?v=OKSQbgfn7kM      

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Digital LED Matrix Clock Project using Holtek LED Drivers. ( Testing for errors )


I had these Holtek LED Drivers lying around for many years. So finally I have decided to make something out of it. I hope to post this as a FREE project for all of my fans. I’ll upload the schematics, … Continue reading

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mini SSD TT PCB for my up comming temperature controller project.


This mini Seven Segment Toner Transfered PCB is made for my temperature controller project. Which is still under observation.

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