Old computers have hidden powers that might help makers to do some electronics projects, I finally did it after months of fears of it’s dangerous power. I already felt it’s electrifying shock when I touched repair our desktop PC many times. But, I need some energy and save some money from buying power adapters so I can buy things for more electronics kits and modules. Recent ATX power supply gives 500 watts to 600 watts of power, switching power supply with 12 volts, 5 volts, and 3.3 volts, some have -12 volts and -5 volts for older pentium 2 PC.
All wires are color coded and can be mixed with same color so you can have more current ranging from 20 to 40 amps! 5 volts have the highest amps that can be drawn, while 12 volts have the lowest with below 16 amps. Tutorials around the the internet is easy to understand and follow, but be very careful of it’s shock so better do it with care.
ATX colore wirings
Beaglebone Black wifi dongle
I bought this cheap wifi dongle around $6 here in our local gadget shop all from China. It’s chipset’s driver in Linux is rare but I found out by accident (linux noob) that MT7601 driver is already installed. While trying my new TP-Link TL-WN725N it’s still unusable with Beaglebone Black, so a blessing in disguise that my stupidity needs to spend $12 .
TL-WN725N is hard to use at present because of lack of drivers available for Linux especially in small computers like Beaglebone and Raspberry Pi. It runs in a virtualbox, I tested it with my PCLinuxOS virtual machine and it connects but unstable almost hanging and slow while connecting to a wireless network.
Beaglebone Black unbox
After a unexpected early delivery of my order from RS Philippines, the BeagleBone Black has arrived! I still don’t have accessory (micro HDMI) to play with it but you can really do a lot with it just by using a USB cable that comes with the box. I plugged it with my linux computer’s usb port and it was detected instantly without drivers installed, you may optionally installed the script inside the usb storage of BBB like I did.
Power supply requirement is not a problem, you may use a cellphone charger with at least 1000 mA but never use it for a long time, a wall adapter with 2000 mA current is the recommended choice to use if you are going to use for 24/7 projects just like what I did my Raspberry Pi as a surveillance camera connected in a wifi environment. Continue reading