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I found this small kit on Ebay. The kit is pretty easy to assemble. The following video shows the assembly steps. The kit actually turns on the LED when you press switches, 1, 4, 7, and 9. That’s it.
This is yet another TDA2030A based audio amplifier DIY kit. The kit is retired and not so popular these days. An excellent tutorial on this kit is published on this website.
This is yet another digital clock DIY kit for electronics beginners. I have previously published several posts related to the digital clock. This kit is no different from those kits, it also displays time and the additional functions and temperature display and alarm. It also has a photoresistor which makes it sensitive to ambient light,…
This digital clock kit looks very much similar to this kit, the kit is actually slightly advanced than the previous kit. It has enough functionalities like any other regular clock. It is very accurate. It is an easy to build kit and perfect to start to develop your soldering skills. It uses the chip AT89C2051.
If you have come to this page directly from a search engine, visit this page first to know about this DIY digital clock kit. This assembly tutorial explains how to assemble the DIY digital clock kit. You will get the following components in the kit package: You will need basic soldering skills to assemble the…
This is a simple wrist watch DIY kit for electronics hobbyists. Anyone with basic soldering experience can build the kit. This is a copy of Solder:Time watch kit from https://www.spikenzielabs.co. It uses DS1302 clock chip.
This is yet another post related to LM317. The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and…
The KA2284 is a monolithic integrated circuit designed for 5-dot LED level meter drivers with a built-in rectifying amplifier. It is suitable for AC/DC level meters such as VU meters or signal meters.
This is yet another audio amplifier project. It is based on TDA2282 chip. The TDA2822M is a monolithic integrated circuit in 8 lead Minidip package. It is intended for use as dual audio power amplifier in portable cassette players and radios. Datasheet of TDA2282 You can see all the assembly images below. You can see…
This is yet another sound activated LEDs circuit. I have previously published a similar project.
The description has been copied from manufacturer’s website. This is a PIC microcontroller-based frequency meter, subtraction frequency is set with crystal measurement functions and programmable, five digital display, easy and intuitive, all using in-line components, the circuit is simple and easy to make. Measurable frequency range: 1 Hz -50 MHz; Most commonly used to measure…
I have written several projects related to LM386 based audio amplifier. LM386 is a versatile and a widely popular audio amplifier chip. The LM386M-1 and LM386MX-1 are power amplifiers designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an…
This is yet another project based on LM358. The LM158 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent…
This is a basic electronic kit based on LM358. The LM158 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain…
This is yet another dark sensor DIY kit. It is slightly different from other dark sensor kits. It has a buzzer and a photodiode that makes it different from other kits. Along with the LED, the kit turns on the buzzer whenever it senses darkness. See all the images below to get the idea for…
This is a basic electronic kit for beginners. The kit is based on LM358, an operational amplifier and works as a flame sensor. The schematic of the kit: Check out the images below to get tips for assembling the kit. You can see the images on Flickr also. Other images
The description has been copied from eBay, so, really sorry for the bad English. When S1 is pressed, U1 NE555 pin no. 2 and 4 will get low level at the same time and NE555’s pin no.3 will also be at low level, 7 pin discharges and 6 pin also gets low level. If S1…
This is yet another metal detector kit for electronics beginners. After assembling the kit, if you take the kit close to a metal, the buzzer will turn on and the LED will flash. The sensitivity of the kit can be adjusted using the potentiometer. Parameters: NO. Parameters Value 1 Name Metal detector 2 Operating voltage…
This is a simple metal sensor DIY electronic kit for electronics beginners. Use 3V-5V battery and take metal to its proximity, it will activate the buzzer. The kit can detect metals up to 5cm. Kit parameters: Supply voltage: 3-5V Dimensions: 66 * 61MM Maximum detection range: 5CM The schematic of the kit is given below:You…
