Easy and work project

Hello, I will show you how to make an off-timer delay. This circuit is simple and uses only 3 electronic components. The off time of this circuit is around 15 seconds. But you can change the R-value to increase or decrease off time. Let's make it like the below video.

Hello, today I will show you how to make a simple fan speed control by just 3 electronic components I use only 3 parts One is a 10 kilo-ohms resistor An IRF540N NPN MOSFET and a 10 kilo-ohms potentiometer No heatsink require for less than 2 A load  I use a MOSFET instead of a transistor because a MOSFET control input by voltage so it's easy to bias Let's start by connecting the resistor to the positive terminal and connect another leg to a MOSFET gate connect a MOSFET gate pin to a 10 kilo-ohms potentiometer. two resistor works as a voltage divider connect a MOSFET drain pin to the ground and also connect the potentiometer middle leg to the ground This circuit use only two legs of a potentiometer Then connect a source pin to the load negative pin and connect the load positive pin to 12 volt or positive terminal. See the video below for practical use.

The below video shows you how to fix water-damaged particle board furniture. A particle board is a low-cost and light material but it is easy to swell by water so I have two choices, buy a new one or fix it and I choose to fix it and share the instruction with you. I hope you like it.

My action camera has severe lens scratches that affect picture quality so I need to fix it or throw it into the garbage. The instruction is straightforward and works perfectly.

This video shows you how to repair water-damaged particle boards. A particle board is light and cheap so furniture manufacturers use it widely, but it swells quickly if it exposes to water or moisture and it will be worse if you don't repair it fast. This video shows step by step guide and I hope you like it.

I bought a new smartphone but still love my old one. I think 3 to 5 years old android still has enough power for everyday use so it can be a useful tool in my house. All the methods are free or you may need to buy some features if you want. You can see below ideas that may inspire you and be useful to you.

 How to improve redmi note 11 pro 5G camera. Free and give you the best result. Redmi note 11 pro 5G is a decent phone, it has a 108 mp camera (Samsung hm2 sensor) but the Picture capture from the stock camera app is full of noise (see below picture) But you can improve camera quality by just installing Gcam mod from the internet and enjoy the high-quality pictures from redmi note 11 pro 5G. The G-cam mod is working for this phone without root access. You can see the picture comparison below. As you can see images above the APS-C sensor size(eos m100) camera has more noise but more details and better color but redmi note 11 pro 5G has a smaller sensor size so the Gcam algorithm is superb. However, the Gcam has its own limit, it can't capture fast-moving object because hdr+ capture several pictures and combine them into one final image. The picture may have low noise but it lost details when captured in a dark environment and it may be the redmi note11 5G not fully compatible with G...

 My audience on my youtube channel asked me how to find a crossover network capacitance and inductance so I will make it here The speaker I made crossover network is a microlab b77. The speaker lacked the woofer's crossover network, no absorbent so I fixed it for cleaner sound and changed the tweeter's high pass filter to a better one. Step 1 Change the old capacitor to a metalized polypropylene capacitor (very clean sound). The capacitor value is 4 uf and the speaker is 8 ohms so the crossover frequency =1/6.28x8x4 = 0.004976 x 1,000,000 = 4976 Hz (x1,000,000 come from Farad to microfarad) If you want to find crossover frequency C= 0.1590/(R x F) x 1,000,000 for uf Step 2 Find induction for the woofer. L = .1592 x 4(woofer resistance)/4976(Hz) =1270 micro Henry x1000 = 0.127 mH but I has 0.1 mH so the crossover point may change a little but not much. If you want the complete sound you may find 0.127 mH Speaker crossover diagram. Step3 Add absorbent to the speaker cabinet. The ...

 Fix broken plastic joint, how it works. My hair steam plastic joint was broken and I need to change the whole part. So I decided to fix it my own way to save my money. All parts to make this fix: Hot glue flat washer Small screws Drill As you can see above picture, the joint is hard to repair by glue because the broken part missing. I need to find something that can do the job. This flat washer is good for the job. Let's see the instruction in the video below.

This page shows you how I install a hot shower at my condominium. However, you need to have basic knowledge about electronics and you will be fine. First step: You need to cut off the circuit breaker before doing this works. Second step: Find the right wire color and meaning of the color. As you can see in the above picture, the ground wire always green in color, and the hot wire is black. Unlike DC current load AC current use black color as a hot wire but DC current use black as a ground. Third step: Check resistance between neutral and ground, it should be 0 ohms or no more than 1 ohms. The resistance above 1 ohm means that the ground wire has a problem and elb, elcb may not work. Last step: Connect three wires to a hot shower and everything will be finished. See the video below for the complete project.

This page shows you how to remove scratches from motocycle helmet face sheild. This method works well even the face sheild have so many scratches. The helmet face sheild is easy to has scratches but you don't need to change it because you can remove it by yourself. Normally, the helmet face shield made of plastic and a car polishing wax can remove scratches. However, the polishing wax dissolve some plastic and make it thinner so beware about it. See video below for the instruction and prove.