I had the good opportunity to find a highly skilled Electronic Technician last Sunday. He did an excellent job and I must say his work is almost an Art because the soldering was very consistent and refined see pictures below.
And because of his superb workmanship, I was able to immediately assemble my project and easily made it work.
I also have started working on the software and it is now is in its early stage development.
Three arduino related products that I ordered from ebay also arrived yesterday. With these 3 amazing products, I can already start developing my Energy Monitoring Device project. This device is a lot more powerful than the DC Wattmeter and Power Analyzer I featured earlier because it will allow me to monitor the health of my battery bank even when I am away by storing the measured parameters into memory and I will be able to read this stored data later and view it graphically.
Today, several items I ordered from ebay 3 weeks ago just arrived. I will use most of them on the projects that I am trying to develop. The first project that I have in mind is to develop my own portable charger with battery bank. Portable chargers can easily be bought from CDR King and a bunch of other stores in SM's Cyber Zone. But I prefer to create my own version.
Today, I already have items 1 and 2, I am still waiting for the arrival of item 3, I can easily find items 4, 5 and 6 in local electronic stores in Raon.
What makes my portable charger different is that I will be connecting the 2 li-ion batteries in parallel and will be boosted its rated 3.2V to 5V which is a typical usb voltage output.
The overall specification of my portable charger is as follows:
2. 5V 500mA output - full size USB
3. 5V 1A input - mini USB
4. Battery Charge LED indicator
Normally, a 24000mAh portable charger will cost 4000 pesos if made in China, more than 8000 pesos if made elsewhere and not bought from CDR King. My project has a budget of 1000 pesos plus other expenses in sourcing the components and of course my labor fee.
I plan to use the same enclosure I purchased earlier for my step-down dc-dc converter, and together with the components, this is how the finished product is going to look like:
The problem with the enclosure is it will hide the led charge indicator which is fully integrated in the mini usb charger module, so I will try to look for a transparent plastic version if available.