Monday, October 18, 2010

1.5V to 5V DC-DC Convertor

I was looking for a simple solution for pumping 1.5 volts to 5 Volts. I have designed various 1.5v- 5V DC-DC Convertors by using special purpose chips. The problem was those chips are very difficult to obtain. Moreover, DC-DC Convertors are mostly required to use coil which is also difficult to get.

Luckily, I found this small breakout board in a local electronics shop (NPE). It was cheap, about USD 10 and small enough to fit in watch case (in the future).
The instruction is very simple, put 1.5 Volt in your will get 5V at the output.

By using this breakout board with my USB battery charger
Attaching this module to my digital wristwatch, then I have a working digital wristwatch. It can be charged via USB. Fully charged batter will make the watch lasts for 10-12 Hours (the display is always on). Now, it needs good case + strap. I have idea but don't have time to continue the project.
I have a plan to disclose the making process and give away the PCBs. But, there are some mistakes in the PCB. The problems can be resolved via firmware. However, I think it's not good to give away the incorrect PCBs. Please wait for the good PCBs and I'll give away some.

8 comments:

Aaron said...

Can you please tell me what 1.5-5v "breakout board" that is and where you got it??? I have been searching for something just like that for HOURS and I can find anything besides this.

Ashok Sharma said...

great work

Ashok Sharma said...

great work

Anupam said...

your activity is not reflect on this blog near one yr. pls reply...

Inhimak said...
This comment has been removed by the author.
Inhimak said...

GOOD JOB!
PIC Micro Controller is a great invention of Microchip Corporation. It is secure and comfortable with minimum parts.

PIC Micro Controller

Blog4pav said...

Did you ever make the PCB's? Can you share your Eagle file? I would like to have some made. Thanks!

Ankita Pagariya said...



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