วีดีโอ

This is the part 2 of the balancer series. It contains the test results and explanations for some unsatisfactory results in the part 1 video. Hope these series of videos help you selecting the best balancer option for your needs. Thank you!

Introducing various balancer modules for Li-ion batteries. Compares each module with actual test results.

This video introduces how to make a variable load with a MOSFET and PI controller. It includes how to model the system to a transfer function, and use the root locus and step response to find the optimum gain for the PI controller.

Explains how I made a capacitive spot welding machine. No Huge Batteries Required!! 20V is required for spot welding. (Introduced in the demo) * Part Lists - Electrolytic Capacitors 10000uF(x4), 6800uF(x4), 4700uF(x5) - Opto-Coupler (PL817C) - Diode (1N4002) - Resistors 10ohm(x2), 2.2kohm(x2), 220ohm, 4.7kohm - N-Channel Power MOSFET 4N04R8 (x2) - 18650 battery (3000mAh) - Step-Up Regulator Mod...

This video explains how to make a capacitive touch sensor on a PCB. Designing touch pads and shields for blocking EMI with FDC1004 touch sensor IC is also introduced. Demonstrates schematic to PCB design with EasyEDA, and shows how to use the touch sensor in the Arduino environment.

This video explains how to make a custom Arduino board. It includes the most basic considerations when designing a hardware. From selecting MCU, designing power and the host interface. Also, introduces programming the bootloader and a simple application to your custom board with a demo.

Introducing 4S BMS with passive balancing features. Review and verify the specifications through charge and discharge tests.

Introduce basic operating principle of a capacitive touch sensor. Demonstrates how to implement a touch sensor with Arduino. Shows the result of the waveform when touch is introduced. Live demo is included! Arduino code used for the demo: drive.google.com/drive/folders/1vp1mY8li51-Zl_Ur6T1qG8v-p40mK7TG?usp=sharing

Introduces how to design a RC Filter for converting PWM signal to analog signal. Formula and criteria to decide the component values are explained. Time and frequency domain analysis is done through actual measurements.

Make your own, one and only LED Driver with the features you need! Find out how to - Design Schematics & PCB - Order PCB and Parts Demo for the designed LED driver is also introduced! * PWM Dimming Control Arduino Code drive.google.com/drive/folders/1kmQZjWRNoTk9Yrt1upoPfo2m9_8iYpVL?usp=sharing 00:43 AL8805 Introduction 02:33 Parts Selection 05:20 Easy EDA Intro 05:38 Schematic Design 09:04 PCB...

Introduces the specifications and operation of PicoBuck LED Driver from Sparkfun. Actual measurement of the current limiting feature is shown, with a demonstration of dimming control performed by Arduino with DC and PWM control. * PicoBuck PWM Dimming Control Arduino Code drive.google.com/drive/folders/1kmQZjWRNoTk9Yrt1upoPfo2m9_8iYpVL?usp=sharing

This video introduces several methods for illuminating multiple high power LEDs.

Explains key specifications of the resistor and how these are related to each other. After studying this video, you will get a better understanding of the specification of a resistor and how to select an appropriate one for your application. Please refer to the link below for the resistor selection guide spreadsheet. drive.google.com/drive/folders/1ITYHJJ2FyKSgMebPVIrCTZP2zosPU4U0?usp=sharing

This video shows how to charge 18650 battery with a 3-Pot LM2596 CC/CV Module with demo. Detail operation of the 3rd potentiometer is also explained. Schematics of this module is introduced for those who would like to look into more details. Check out my other video which explains in great detail of the principle operation of buck converter and CC/CV functionality. * th-cam.com/video/af3L-t_uFt...

LM2596 CC CV Module - Operating Principles (With Demo)

Digital Potentiometer (X9C103S) Introduction and Demo with Arduino

Battery Management System (BMS) for a Lithium Ion Battery (with HX-2S-01)

18650 Li Ion Battery Charger DIY (with TP4056)

INA219 Current Sensor Tutorial (with Arduino)