DIY brushless turbo air blower with 3D printed case. 3S li-ion batteries, powerful ESC and a lot of power.

Tutorial on how to make your own 3D printed headphones with planar speaker PCB design. Bluetooth audio and rechargable battery! Download STL and GERBER files.

This PCB is made for measuring the optical power of a laser with Arduino and Peltier cell. Check full tutorial for more.

Tutorial on how to make a powerful coilgun with 10 stages coils. High voltage capacirtors and Thyristor control with infrared IR detectors. Super fast bulllet.

Shocking powerful tesla coil on a PCB with gold windings and Bluetooth music receiver. Full tutorial, schematic, part list and how to make it.

3D print the enclosure and use an electromagnet with a simple equalizer amplification circuit and move ferrofluit with the rythm of the Bluetooth music.

Charge a Li-ion or Li-Po battery with undervoltage and overvoltage protection but also 10A output current limit BMS for those project that require more than only 2A.

How to make a full sinusoidal inverter using the EGS002 driver board. Supplied with 12V from a battery and output 230V AC at 50Hz with SINE wave and 500W.

How to make a circuit for a Dual rail supply for negative voltage homemade DIY. Center tapped transfoirmer, dual boost converter, small dual rail IC and more...

How to design and make a high quality HiFi planar speaker with a flexible PCB and planar magnets and later make some 3D printed headphones with these planar speakers.

Very easy circuit of a TRIAC AC dimmer with a DIAC and a potentiometer control. See the schematic and the needed components and make a homemade powerful AC powerdimmer

Took this Universal brushed motor from an old washing machine. See how to control and the wire connection for this motor with DC and AC and get a lot of power out of it.

This is a kit with the vacuum tubes, the transformers and all the needed resistors and capacitors to make a vacuum tube power audio amplifier. Check the schematic, the part list and how to assemble this circuit.

Homemade AM radio based on vacuum tubes and a regenerative coil configuration. It uses 2P2 tubes and it has low power output but it works and we can receive AM radio channels. Learn how it works, see the schematic and test it out.

How a capacitor works. How to measure the charge, voltage, distance and dielectric configurations. How permittivity affects the capacitance. Cool experiment.

Homemade high voltage magic wand with HV generator and voltage multipllier. Creates static electricity and cool experiments.

Homemade coilgun with separate PCB for each stage. Big coils, huge high voltage capacitors and thyristor control for powerful magnetic field. Very high speed metal bullet detected with phototransistors.

Homemade Vacuum Tube Preamplifier PCB design with analog parts and through hole components. Audio amplifier board with volume control and cool look, purple color.

Metal detector circuit and schematic with colis on the PCB. Detect metals and ring a buzzer and LED. Homemade detector.

How to make a delay timer with the TL431 and select the delay tiem with the capacitor and resistor. See the schematic and the results.

How to make an under voltage protection circuit with the TL431 and select the cutoff value with a resistor. See the schematic and the results.

How to make a current limiter with the TL431 and select any value with a resistor. See the schematic and the results.