Why withered trees. It is dying. Oh, the soil is too dry. How can we use electronics to help trees? Build Simple soil moisture alarm circuit. The tree is very necessary for humans. Because can clean waste air, as a food, housing, medicine, etc., We should tree planting as well. Water is necessary for the … Read more
It can be used to replace conventional fuses. Because it’s comfortable not need to replace the fuse every time the power too over. This circuit use transistors so simple and low cost. Read more
This is Analog signal selector switch. Do not waste time, choose the input method with interchangeable input cables. But press the input selector switch, as you like. Easy and cost effective alternative is Input selection switch. With features the optional four-channel signal input. and volume to Increase or decrease the signal. In the event that … Read more
This project is a sound level meter circuit that easy and very cheap, can drive 9 LED display,The LB1409 is used as base of this circuit makes small size. Read more
How to use TL497 as the switched-mode power supply schematic that outputs a current of 500mA, and there are 3 models: step down, step-up, and inverting voltage converters. Now, a switching power supply is highly popular. We are used to suggesting a lot of projects. Those who want the switched-mode power supplies that have small … Read more