If you have come to this page from a search engine, please check this page first, you will eventually come to this page again. About Cosmarino The assembly process of the Cosmarino kit is very straight forward. You just need to follow the silkscreen labels to get the idea of assembly. A basic knowledge in…
This is a 4x100W audio amplifier board with Audio B plus Bluetooth module. It has integrated 2xST high performance TDA7498 chip which supports dual channel audio amplification. Each channel is capable of giving nominal power output simultaneously and continuously. This board can be powered by any DC 14V-39V* power supply.
We all know that troubleshooting is a process of identifying and solving problems that cause a circuit to malfunction. This article is about troubleshooting basic and amateur electronic projects, not about sophisticated devices . With the exception of minor problems,troubleshooting sophisticated systems at the circuit level, like computer, VCR, mobile phones, etc. requires special skills,…
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.
Description:Â The following circuit works as a toggle switch. The circuit has two stable states, ON and OFF. Once it is ON, it remains ON till you press the switch again. The project has been derived from buildcircuit.com. You can read the original post from this link:Â http://www.buildcircuit.com/toggle-switch/Â
This is a compact size Bluetooth 5.0 audio transmitter. Maybe your music player (TV, Computer, DVD, Radio etc.) does not have Bluetooth function and you don’t want to use a cable to connect with our amplifier board. You can use this little thing to let your audio player connect with your Bluetooth amplifier board wirelessly.
This is one of the simplest ways of making an FM receiver. Just get a low cost FM receiver kit, make an audio amplifier using LM386, connect them together and your FM receiver is ready. Most of the commercial FM receiver kits receive the signals within the FM band, usually 88-108 MHz.
In this tutorial we will learn how to change the color of an RGB LED connected to Arduino, alternating for two seconds the following colors: red, green, blue, and then orange, yellow, indigo and purple. It is similar to the previous  fade led effect experiment but it is not limited to only one LED but there…
I found this project on Fritzing.org. This is just a simple project for testing a 2 channel relay using an Ethernet shield over an Arduino Mega. In place of LEDs, you can connect 220V AC lamps. If you have not used relay before, check out this article. The Arduino sketch has been compiled and there is…
This post shows how to build Jaycar’s JIMINI THE CRICKET DIY KIT- PROJECT SC2 #14. It takes around half an hour to build this kit. It is basically a sound sensor. When there is a noise/sound close to the electret microphone, the circuit turns on the two LEDs and produces a chirping sound.
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…
Test ultrasonic range finder DYP- ME007
This is an Isolated gate driver-based N channel Mosfet Arduino Nano shield based on Si8261ACC, which can be used in various applications like DC Motor driver, solenoid driver, led driver, bulb driver and heater driver, with 3A fast switching diode provided across the output for an inductive load which protects the circuit from back EMF. Arduino Nano…
We are not this FM transmitter DIY Kit with an enclosure. Here’s one of the easiest, simplest and the most popular FM transmitter for amateurs and electronics beginners. With this DIY kit, you can transmit your voice or audio over an ordinary FM radio within the FM broadcast band. It is a DIY kit designed…
This is yet another audio LED spectrum DIY kit. Connect the kit to any audio source and see the lights patterns changing according to the audio signal.
The range of a Wi-Fi signal can be influenced by several factors, which can impact its coverage and strength. Understanding these factors can help you optimize your Wi-Fi network for better performance. Here are the key factors that affect Wi-Fi transmission range: Frequency Band: Wi-Fi operates in different frequency bands, such as 2.4 GHz and…
Here’s a simple latch-up circuit using 555 timer and opto-coupler MCT2E. You can also use PC817 in place of MCT2E. The NE555 timer is configured in astable mode.The components are selected in such a way that the frequency output of the astable circuit lies within the audio range. Opto-coupler, MCT2E is is used for latching…
This sound sensor with Relay driver shield for Arduino Nano can be used to develop sound-activated ON/OFF switch or other projects that require sound senor. LM358 op-amp is used as the amplifier, 1st op-amp amplifies the microphone signal, and 2nd op-amp works as a half-bridge rectifier that converts AC signal into a DC voltage. This DC voltage is connected…
