2018-07-12 Update: DIY Solar USB Charger
When you are outdoors, what if your mobile phone or MP3 just needs to be charged? Come to make a solar charger, no matter where you are, the sun will always rise.Step 1 Materials preparationFor solar panels, I used 2 pieces (3V).5V pressure regulator USB female connectorInsulated wireElectric soldering iron Epoxy or hot meltAfter the components are ready, you need to check the front and back side of the USB cable and pressure regulator. The regulator guarantees an output of 5V.I need to make 5 t...
Tag: DIY Solar USB Charger
View More >>2018-07-06 Update: Homemade pump
Today, we are going to make a pump.Material: Several caps of different sizes, one engine, something for water wheel, wire, straw.First, find something that can be made into a water wheel, such as this internal structure of the wheel below.Since I chose to use the inner part, I started to remove the other part with pliers or a blade.After cutting off the outer part, you will find a thick base. This base is very thick, so it will affect the efficiency of pumping, so use a saw blade to cut along th...
Tag: DIY Water pump.
View More >>2018-07-04 Update: Handmade ultrasonic humidifier
The materials needed:An ultrasonic atomizer (You can find it in the flower and bird market);ACD case;A small fan (you can use VGA cooler, it is very easy to get it in secondhand computers market);A power supply.Ultrasonic atomizer (multicolored lights on it)ACD case (for 50 pieces of discs)Atomization effectInstall the fan and dig a small hole on the opposite side. A homemade ultrasonic humidifierfinished.Sourcefrom:GeekfansTranslatedby:Utsource
View More >>2018-07-04 Update: How to make a rain alarm
Step 1: Grind the oxide layer of copper clad laminate with sandpaper, and draw lines on the raindrop sensor board with marker penThe lines I painted is uglyStep 2: Corroding the board in etchantPls take a look, the water was still transparent at the beginning.Being corroded...Corrosion is now halfway. The water seems like a little blue (about 45 minutes later).Finished. Obviously we can not see the copper now.The water looks pretty.Step 3: Rub off the black line with sandpaper after drying (you ...
Tag: DIY Rain alarm
View More >>2018-07-02 Update: DIY a light seeking obstacle avoidance car
Recently I bought some ne555, so made a light seeking obstacle avoidance car, here it is.Please ignore the brand of the display on the background display. . . . . The car just looks fine.The first part is the brain. . . . Drawings was found online.The motor is a geared motor purchased online. Here it is.The circuit is very simple, so the specific steps are omitted. This car can run.Use 4 AA batteries at the beginning, it is too large when put them in the box, so I use 4 nickel-cadmium batteries....
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DIY utsource 100G QSFP28 SR SR4 10G or 25Gb/s 40G or 100Gb/s Tesla coil 100G QSFP28 SR4 100G QSFP28 LR4 FTTH installation France Version SFP Tx/Rx Motor Active Optical Cable(AOC) 40Gbps 56Gbps QSFP+ AOC Cable SFP+ transceiver SFP10G SR 10G SFP+ SR transceiver Holographic projection Distance sensor CFP CFP optical DIY socket tester Sensor cable 40G QSFP+ Transceiver module CWDM optical transceiver module transceiver AOC cable PAM8403 IC Based Audio NE555 arduino Rain alarm Ultrasonic humidifier Water pump. Solar USB Charger Alarm LED night light Brake Disc Clock DAC Cables Optical