DIY cable tester

In this blog I will show you two ways to make a cable tester. The 1st way uses a arduino (software controlled). The 2nd way uses a decade counter chip(CD4017) and a flashing LED. I am going to order the Dual RJ45 jack to screw terminals from eBay. The other connectors are from parts-express. I …

USB charger data voltages

You may be thinking that usb charging devices use just the 5v and ground wires? Well your wrong as those devices don’t want to break the charger by drawing too much current. They require certain voltages on the 2 data lines. It took me alot of research to figure out how to configure it. If …

How to mount small hobby solar cells, plus a USB Solar power supply?

I looked all over the internet for a way to mount these solar cells, And only come up was ones you mount on houses. So I got a cardboard box and glue gun and tried gluing them to the piece of cardboard and it was a success! I got 19 of the 0.5v 0.8A solar …

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