I've made many of these and given them away.. People keep asking for them.. So I keep making them..

They are a simulation of fire fly's in a Jar. Using Arduino Nano to program the ATtiny85. I use Charlie Plexing to get more lights lit then there are pins. This project is desi... view more

• attiny
• attiny85
• DIY
• Arduino
• LED
• circuit
• light
• FireFly

Today we try a circuit from the internet for charging batteries, a BMS or battery management system. I’ll show you a schematic for only one cell and scale it up for any amount of batteries if you want a 2S battery pack, 3S, and so on. The function of this circuit is to charge the batteri... view more

• circuit
• homemade
• charger
• lipo
• BMS

I want to power on my microcontroller for a short time, do a process and then go back to sleep where it consumes 0 apms of current. I’ve done something like that with the ultra-low power mode a few months ago on a different project, but even so, in that mode I was still consuming&nb... view more

• latch
• wake up
• circuit
• homemade
• schematic

This is a simple latch circuit. Press the button once and it will turn on the output. Press the button again, and it will turn off the output. Instead of a push button, you can use a vibration sensor for example, and turn on your devices with the latch each time you sense a vibration. See belo... view more

• latch
• circuit
• switch

In this tutorial I'll show you the circuit of a basic wireless charger, the transmitter and receiver. See how to adapt the resonance and transfer power. Then how to regulate the receiver output at 5V so we could charge a smartphone via USB. Hope you'll learn something new.

• wireless
• homemade
• DIY
• charger
• circuit

This Project is an RFID & Keypad Access Controller based on ArduinoI have used arduino pro-mini due to its small size and capabilities .the purpose of this system is to allow a certain users to use the intended object such as Entering a room , using an elevator , open a door..etcthe system ha... view more

• DIY
• Arduino
• circuit
• rfid
• keypad
• alarm

es una bola de luces y sonido con arduino que al momento de tocar uno de los triángulos, cambia de color y toca una nota view more

• Arduino
• circuit
• circuito
• bola
• sonido
• luces
• RGB
• Electronica

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• MiniSumo
• Arduino
• circuit
• digital

It makes sure that plant is alive.It utilizes a mini divepump and sg90 servo to manuplate the temprature and humidity, it has soil moist sensor and dht11 sensor.(why there is a word count rule?)a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a... view more

• automation
• Greenhouse
• circuit
• Arduino
• DIY

Did you think about how to build a USBTiny ISP Programmer on your own?

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• PCB
• ARDUINO
• attiny
• CNC
• circuit

this project get data from androide phone via bluetooth. after reciving the data, the data is pass in arduino and then arduino display data on Matrix Display. we entered text in androide mobile app. the working voltages is 5v @ 500mA. the size of matrix display is 19x6. view more

• DIY
• homemade
• circuit
• DISPLAY
• matrix
• Arduino
• bluetooth

this is a 3d printed prosthetic arm that uses emg sensors for input. the hand is 3d printed in petg material. the electronics is controlled by an Arduino Nano, which takes input from a emg sensor that is used to control the fingers.each finger is controlled by strings connected to a ser... view more

• DIY
• ARDUINO
• prosthetics
• 3D
• 3d_printing
• petg
• circuit
• diy_pcb

This project utilizes ESP12E microcontroller connected to local WiFi network, fetching data from webhooks (IFTTT) of Google Assistant to control Relay module.Design Features:Separate Board for ESP12E as a Hat, making it easier to switch between projects.Transistors to control Relay boardRelay mod... view more

• DIY
• Arduino
• circuit
• iot
• ESP
• pcbs
• Soldering
• Home Automation
• google

A Peltier cooling device is a thermoelectric semiconductor component that can provide cooling with no moving parts. It’s very easy to use and it can get very cold – and also very hot! Today we will conduct a few experiments with a common and inexpensive Peltier cooling device.... view more

• peltier
• generator
• circuit
• thermoelectric

This PCB project is a part of a bigger group (EEMK) project that is called Model Sattalite.The goal of this project is to measure, log and send the data from a flying shuttle with fullduplex comminication and monitoring everything using a self made (UI) user interface. There are so many capa... view more

• DIY
• Arduino
• circuit
• Satellite
• mpu6050
• BMP180
• FC33
• AdafruitGPS
• Xbee
• Teensy3.5
• HomemadePCB
• 3Dprinted
• CoaxialPropeller
• Parachute
• PerfboardPCB

I Made a 8*8*8 LED Cube which can display programmable patterns. This project is based on Arduino. I have used SN74HC595 (Shift Registers) and PN 2222A (Switches). view more

• circuit
• Arduino
• DIY
• SN74HC595
• PN2222A
• LED
• 8*8*8 LED CUBE

This is very cheap,  small in size, and a great choice for any small or compact projects. This microcontroller board has attiny85 ic as the main part. The board can be operated on two different clock speed first internal 1 mhz and secondly external 16mhz. The board has four 5v pins, four GND... view more

• Small
• Micro-controller
• homemade
• attiny85
• diy
• circuit

This Project is my first project that requires heavy soldering. I even converted smd ch340 to dip ch340 :) view more

• DIY
• Arduino
• circuit
• from scratch

https://www.youtube.com/watch?v=e_cyxoqvWe8 i have seen your video of making a Ultrasonic sensor, i am now tring to make one of my own. but i want it to be waterproof so rather then using a SR04 speaker i am tring to use SR04T speaker but it not working. any suggestion. view more

• sensor
• circuit
• ARDUINO
• DIY

Hey THERE!!

In this project we are going to build an Automated (password protected) Door lock. The classical lock and key is liter... view more

• DIY
• Arduino
• circuit
• automation
• Door lock

Hello again guys, In this tutorial i will show you how can you display images from Micro SD card over the TFT Display. I am using TFT Display with ILI9225 Driver. This display has a built in SD card slot but i am using external adapter because my TFT Display SD card slot is not working. Let'... view more

• ILI9225
• TFT Display
• Arduino UNO
• circuit
• Arduino Sketch
• C/C++
• Microcontrollers
• Color Display
• SPI Interface
• Micro SD Card
• Arduino SD Card Module
• UTFT

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• STC15W204S
• circuit
• STC Microcontroller
• Microcontrollers
• FTDI programmer
• C/C++
• Keil uVision
• 8051
• DIY

I made a telemetry unit to go on board of a large model rocket that I built! The unit itself was built on a teensy board which uses the arduino IDE and language but was a little more powerful. The data was recorded on the rocket and then sent to my MacBook real time so I could see the data while ... view more

• DIY
• Arduino
• circuit
• Rocket
• Telemetry

CUBO LED

La función principal del cubo es poder desplegar animaciones en tres dimensiones entre ellos letreros, formas y efectos, el proceso de construcción es complejo por la cantidad de puntos de conexiones y la repetición del trabajo, pero su proc... view more

• DIY
• Arduino
• circuit
• cubo
• LED
• cube
• LED
• diode
• electronics
• mega
• tutorial
• multiplexing
• multiplexion
• registro
• desplazamiento
• shift
• register

A Tesla coil generates a high frequency high voltage inside of the main coil and that ionize the air at the end of the copper wire and the air will glow due to the created arcs. Depending on the tesla coil power, the arcs could ger bigger. This project is very cool to look at but not just that. I... view more

• tesla
• coil
• voltage
• arc
• plasma
• circuit

If you ever opened a power supply of some sort, you might have seen a special component. That is a transformer but used in a FLYBACK configuration or sometimes called a coupled inductor. You will also notice that the transformer doesn’t have just one input and one output as common transformers ... view more

• flyback
• converter
• DC
• Arduino
• circuit

Este robot lo hice el año pasado y es el primer diseño que hago en smd.

La idea era hacer algo complejo y desde cero incorporando como cerebro el S... view more

• circuit
• STM32
• robot
• Mini sumo

El proyecto es hacer una mesa para el pc con luces rgb para dar un toque mejor al set de grabación.primero de todo el tablero a de tener suficiente grosor para cuando realizamos el rebaje donde ira la resina y los led no quede debilitado la madera.usare un Arduino para el control de los led... view more

• led rgb
• circuit
• Arduino

We all know that our smartphone's battery is always out of juice when we really needed it, for example to make an imp... view more

• DIY
• emergency
• powerbank
• charger
• portable
• EDC
• lipo
• circuit

Learn How to Make a Printed Circuit Board at home using the Iron & Laser Printer method and Ferric Chloride Etchant. A printed circuit board (PCB) mechanically supports and electrically connects electronic components or electrical components using conductive tracks, pads, and other fe... view more

• circuit
• How to Make a
• Ferric Chloride
• etchant
• etch
• Laser print
• printed circuit board
• PCB
• DIY

In a past tutorial we have build an ESC for sensor-less brushless motors. Without sensors we had to implement a back electromotive force detection and make the switching sequence with that. The circuit got quite complicated and the code wasn't the best neither. So, in this tutorial... view more

• DIY
• Arduino
• ESC
• speed
• controller
• circuit
• PCB

Around 2 years back I've made a huge portable Bluetooth speaker but that had some errors with the circuit. Then, I've made a small portable bluetooth speaker that had a good circuit. Now, I'me making a new version for the big speaker but with all the errors corrected. It will have a 6S battery pa... view more

• DIY
• speaker
• battery
• bluetooth
• portable
• circuit
• rechargable

This is a very basic tutorial and there are already a lot of guides on how make something like this. But, since this is part of a future project (electric longbaord), well I'm doing this first step and show you how to connect the batteries, add charging protection. I'll use some Samsung INR18650 ... view more

• circuit
• li.ion
• pack
• battery
• BMS
• homemade
• DIY

How are these induction heaters work? We will look over the circuit and explain step by step how the oscillating signal is created, how current is induced and how the metal will get hot. Finally we use that schematic and mount a homemade version and see if it works to heat up some metals. So let'... view more

• circuit
• heater
• induction
• homemade
• DIY