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Gearbest SBK8586 Soldering station Hot Air + Iron 63€
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Bluetooth Arduino TRIAC control
Arduino TRIAC dimmer
Detect zero cross

Create firing pulse for TRIAC gate

How TRIAC/SCR work

Change power with potentiometer
Change power with bluetooth App
Full schematic, part list, App and code

tutorial Arduino TRIAC dimmer
Detect the zero cross of 220V RMS voltage. Use photocoupler and separate high voltage from low voltage of the Arduino. Create the firing pulse for the TRIAC gate and control power with bluetooth connection and a smartphone App.
Sensored electronic speed controller
sensored ESC circuit
Amplify hall sensors of brushless motors

Create the 3 phase bridge

Build the driver

Read signals and create code
Full schematic, part list and code

tutorial sensored ESC
I'll take a brushless motor with hall sensors out of an old CD writer. Next we amplify the signals from the sensors, build the controller using the ATmega328 chip and make some tests.
DSP5015 Lab Power Supply
DSP5015 power supply dsp
Make the 3D case

Connect the power supply

Test the output

Part list and schematic


DSP5015 DSP power supply tutorial
Build a leb bench power supply using the DSP module of 15A and up to 50V.
DIY flash ADC of 3bits
homemade 3bit flash ADC
How a voltage divider works

Array of OpAmps

Encoder with arduino

Schematic and photos


diy flash ADC with OpAmp
Very, very basic tutorial. A little bit on how an flash analog to digital converter works. How the voltage divider works and get different values of voltage. Encode the outputs of the ApAmps with Arduino.
DIY inverter circuit - Arduino or 555
homemade inverter circuit
220V AC from 12V DC

Arduino or 555 timer

Circuit simulation

Basic theory


homemade inverter circuit
We will build our own inverter that will pass 12V DC voltage to 220V AC voltage of 60Hz. The circuit is low power (around 24W) but it is enough to charge your phone, laptop or power a light bulb.
Homemade bluetooth speaker, 3D printed case
homemade bluetooth speaker portable
Portable

3D printed case

USB charging

Dual channel amplifier


homemade bluetooth speaker portable diy
Build your own portable speaker. Find here the full schematic and all the steps. The idea of this kind of project is to reuse any component that you can.
DIY AC/DC current clamp fot the oscilloscope
diy current clamp non invasive AC DC
Full DIY

Variable scale

Amplified output

Hall sensor


diy current clamp non invasive AC DC
Build your own non invasive current clamp for the oscilloscope with a basic circuit and a hall sensor that will measure the magnetic flux created by the current passing through a wire.
DIY bench power supply from an old PC power supply
Made with PC power supply

Variable voltage output

Curent limit control

7 segment display


buck boost converter circuit
Build your own bench power supply out of an old PC power supply. Using a DC to DC step up step down converter we could obtain a variable output from 1 to 26 volts and also control the current limit. Enjoy!
Buck-boost DC to DC converter
Boost or lower the voltage

Variable output

PWM control

PPM control


buck boost converter circuit
Learn the theory and how to build a buck-boost DC to DC converte
Boost DC to DC converter
Boost the voltage

Variable output

PWM control

PPM control


boost converter circuit
Learn the theory and how to build a boost DC to DC converte
Buck DC to DC converter
Lower the voltage

Variable output

PWM control

PPM control


buck converter circuit
Learn the theory of a buck DC to DC converte
TDA7492p 100W bluetooth portable Speaker
Stereo 50W+50W outputs

Low cost

Bluetooth connection and control

Circuit, steps, material...


3d printed rc spitfire plane
We all like music and we all use smartphones. So this tutorial will show you how to build a low cost 100W wireless bluetooth portable speaker with high quality output. Step by step on how to build and use it.
Electric ARC lighter
How a transformer work

Coil energy and flyback

Flyback converter

Create an electric plasma ARC


3d printed rc spitfire plane
Everyone saw those electric plasma lighters that you could buy for less than 10 euros. In this tutorial we will se how a transformer work, what is a flyback transformer and how to create a high frequency high voltage flybak converter that will create a nice plasma arc.
Homemade brushless motor
3D printed body

12 poles 14 magnetst

Manual windings




Click
Learn the basics of a brushless motor. We're going to build a outrunner brushless motor and learn how it works at the same time.
Small, cheap audio amplifier
Use of LM386 amplifier

1W output

Amplify small sound signals




Click
Basic and cheap circuit. Amplify any kind of sound signal, up to 8 ohms speacker and 1W.
PCB design - first steps into Design Spark
Basic hot keys in Design Spark

Standard sequence to follow

Simulation, schematic, pcb design, G-code generator




Click
You will learn how to design a basic PCB in design spark following the basic rules of PCB designs. Once you finish your PCB you will learn how to export the gerbers and generate a g code in order to CNC mill your PCB.
Basic H-bridge circuit
Double DC motor control

Control the rotation direction

Control the speed with PWM

Perfect design for robot control


Click
Small circuit to control the spin direction and speed of two DC motors. It works with voltages up top 14 volts and 2 ampers of curent.
ESC - electronic speed controller
12 to 24 volts input

Triphase circuit

PWM control

EMF detection




Click
Learn how to build your own electronic speed controller for brushless motors. Easy, fast and cheap project.