3AMP DC Motor speed and direction controller using MC33035 IC from on semiconductor, though the MC33035 was designed to control brushless DC motor , it may also be used to control DC brush type motors. MC33035 driving a Mosfets based H-Bridge affording minimal parts count to operate a brush type motor. On board potentiometer provided…
If you have come to this page from a search engine, we recommend you to visit the following pages: 1. About Relay module for the popular clap_switch (Get description of this kit) 2. How to connect clap-switch to the relay module 3. How to use the relay-module and the clap-switch to operate electrical appliances In…
I was testing a couple of low-cost laser diodes that come from china and I was wondering why those diodes don’t have any protection/driver circuitry. Those diodes come with a simple series resistor for current control which is not a good idea nor stable.
It’s a simple project to build a stereo preamplifier using electret microphones and the cheap operational amplifier LM358. In the past, we have made few projects comprising LM358, you can check them here. This project uses the dual-channel operational amplifier LM358. Each channel is used to increase the signal of one electret microphone and it…
This is one of the most interesting experiments that uses Amarino shield and Amarino toolkit application. If you have never heard of Amarino toolkit and the shield, we recommend you to go the following pages: About Amarino toolkit About Amarino shield This experiment with Amarino shield is similar to our previous tutorials on Sensor Graph-…
Description: This versatile dark sensor is made up of two transistors. It is a versatile module, because you can use it for testing several electronic components, such as, relay, reed switch, light dependent resistor(LDR), electret microphone, phototransistor, photodiode, etc. Besides, you can use this module for making simple clap switch, light operated switch, water level…
DOWNLOAD this arduino code OPTIONAL LINK This article is for beginners who want to learn about transmitting data from Android to Arduino and vice versa. In this experiment, you will see numbers increasing on Serial Monitor of Arduino and same numbers will be seen on Android interface also.
If you’ve ever struggled to use a solderless breadboard with an Arduino, you understand how frustrating it can be! This DC boarduino clone acts just like an Arduino, and works with the latest Arduino software. For many projects it can even be preferable! The kit includes all parts necessary, the assembly is straightforward and well…
8 Digit serial numerical display shield for Arduino has been designed for various applications like digital clock, stop watch, score display, temperature meter, frequency counter, digital meters etc. The circuit uses popular MAX7219 IC and two common cathode 0.5inch red seven segment displays. The MAX7219 is a compact, serial input/output common-cathode display drivers that interface…
Heat-activated cooling fan controller is a simple project which operates a brushless fan when the temperature in a particular area goes above a set point, when temperature return normal, fan automatically turns off. The project is built using LM358 Op-amp and LM35 temperature Sensor. Project requires 12V DC supply and can drive 12V Fan. This…
Contact-less controlled automatic wardrobe light turns on the LED when you open the wardrobe door. Τhe project is based on Hall effect IC including LED driver and tiny magnet. Board doesn’t require any mechanical switch. When magnet is close to the board, LED is off, when you open the wardrobe door magnet goes far from…
In this tutorial, we will turn on and off the LEDs sequentially, such as Christmas tree lights.
Optically isolator Arduino Shield has been designed to provide optically isolated I2C communication between Arduino and any other device or sensors that works with I2C protocols. I have used the ISO1540 Low-Power Bidirectional I2C Isolator IC from Texas Instruments to build this project, and the device is compatible with I2C interfaces.
BuildCircuit has previously published a project on HCSR04 ultrasonic range finder module. You can checkout the article from this link. Now, we have another article on HCSR04. It is as simple as the previous project. HCSR04 ultrasonic range finder module: The HC-SRO4 is an ultrasonic sensor which uses sonar to detect objects at a distance…
In this tutorial, we will learn to use a potentiometer with Arduino. It allows us to change its value by turning a small knob, the analog value read by Arduino will enable us to do our flashing of the LED depending on the value read. Steps: -Connect the LED as shown on the image. -Connect…
This article is about remote operated musical bell using UM3481. The M348X series IC is a mask-ROM-programmed multi melody generator , implemented by CMOS technology. It is designed to play the melody according to the previously programmed information and is capable of generating 16 songs with 3 instrument effects : piano, organ and mandolin. The device also includes a pre-amplifier which…
This project describes how to build a “soft touch” switch. By “soft touch” we mean that you have to push once to set device ON and push again to set device OFF. This kind of switch works by latching a relay to ON state with push of a button and with another push latch is…
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 video shows all the steps to build the HEE-HAW Siren Project from Jaycar. The kit is based on NE555 IC. The timer NE555 IC is configured in astable mode. You will hear a hee-haw siren similar to an ambulance and you will see the two green and red flashing LEDs. The kit is very…
