I like taking the kids to tour upcountry. We purchased a GARMIN GPS to reduce stray. I like it because it can Map update any lifetime and cheap. But yesterday have a problem white screen with a message that touch dot. I try to calibrate touch screen. I started to turn on the GPS. Then, press and hold the left screen. Next, show white screen and display “touch dot” we press dot about 10 times. Then it shown “Calibration complete” Press “OK” now. Start to use them!
We like to test the functionality of a high current power supply by simple power load. It is 12V lamp 50 watts. But it had a high temperature. Require a docking station proper on long time trials. Today my son build docking for this lamp. Figure 1 All parts We use: – Light bulb – Metal screw 2 inch – brass hooks as terminals – Thick wooden planks We use Incandescent motorcycle head light bulbs 12V 25W/25W without a head light socket Figure 2 The structure inside light bulb The structure inside light bulb has two filaments for the high …
This is DIY pocket pack solder. To portable and lightweight with the division lead to shorter. Normally we always to buy big lead because worthy than small. My son buy new solder; DIA: 0.8mm 1LB TIN/LEAD 60/40. But He does not like it because too much heavy and difficult to use with As Figure 1. He saw the pocket pack solder is in here: Thus, there is an idea to adapt something near us to reused without buy more. We have these markers a lot as Figure 2 We take pen nibs out, then put the lead instead. Figure 3 …
This is simplest automatic solar led light circuit that my son try to make it for basic small solar charger. This circuit is a simplest circuit. He trial it to learn about solar LED light, and makes it all by himself. He needs one LED light that brightest at night. But in daytimes it will go out and charged current to battery. He choose to use 2 x AA nickel-metal hydride battery total voltage is 2.4V at 500mAh. It need to used current about 50mA – 80mA. Thus he cannot use a white LED because it use 3.3-3.6V. As this …
This is Modem wireless router overheating troubleshooting by my son. If your Internet is very slow in the daytime is The modem wireless router is overheat. My son measure its temperature was about 55 degrees Celsius. As Figure 1 So we figured out a way to reduce the heat to it. The right way is to install a fan to air absorbs heat quickly. Blowing into it Not what should be avoided due to the dusty lot. There may be problems later. Then He used a screwdriver to open the box as Figure 2. To drill holes in the bottom …