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Uploads
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Review: ThruNite TN12 (2016 version) LED Torch Flashlight - Duration: 13 minutes.
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Julian's Logic: The S/R (Set/Reset) Latch - Duration: 16 minutes.
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Julian's Postbag: #51 - Banggood Special - Duration: 25 minutes.
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Playing with: 240-Watt Polycrystalline 60-Cell Solar Panel - Duration: 5 minutes, 49 seconds.
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Playing with Transistors: NPN 2N3904 Transistor Experiment - Duration: 9 minutes, 50 seconds.
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Julian's Ardutorials: Arduino as an ISP - Duration: 18 minutes.
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How to Pick a Lock - Plastic Padlock and Picks from Banggood - Duration: 10 minutes.
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Dubious Business Idea: LEDs, Resistors and 12V Car Electrics - Duration: 7 minutes, 44 seconds.
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Retro Electronics: Z80 Microprocessor Serial Data Transmitter - Duration: 17 minutes.
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Fun for £1: Poundshop VHF FM Transmitter Receiver Set - Duration: 14 minutes.
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Autopsy: Faulty PWM5 Solar Charge Controller - Duration: 16 minutes.
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Retro Electronics: Magazine Project - National Lottery Predictor - Duration: 14 minutes.
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It's Postbag!
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Postbag #6: UAV OSD, SCC MPPT?, NRF+ PA LNA - Duration: 10 minutes.
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Postbag #7: 808 Cam DVR, USB Solar Panel, 2x 18650 - Duration: 5 minutes, 55 seconds.
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Postbag #8: Nano CH340, USB 18650, 1.3" SPI OLED, HRC 10A - Duration: 12 minutes.
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Postbag #9: Component Tester, USB Dinky, 3V Pump, Ferrite Rings - Duration: 9 minutes, 56 seconds.
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Postbag #10: APM Sensor, UNO CH340, CMP12, 10W LED, IIC OLED - Duration: 10 minutes.
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Postbag #11: LED Drivers, 150W Boost Converter, USB CH340 - Duration: 9 minutes, 21 seconds.
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Postbag #12: Banggood OLED, 18650 Cell Bank. LED Boost Driver - Duration: 9 minutes, 50 seconds.
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Postbag #13: 99p VGA Fan, 5600mAh Banggood Power Bank - Duration: 9 minutes, 42 seconds.
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Postbag #14: Matek USB Power Monitor, LED Driver, Phone Clamp - Duration: 11 minutes.
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Postbag #15: 3.3V 8MHz Arduino Pro Minis, 22400mAh Powerbank - Duration: 10 minutes.
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Postbag #16: 100W LED Driver, 20-Step Encoders, RavPower FileHub - Duration: 13 minutes.
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Postbag #17: TouchMe USB LED, Pulse Oximeter, MAX17043 LiPo Gauge - Duration: 11 minutes.
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Popular uploads
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Monster 7,500 Lumens 100W LED Flashlight for under $10 - Duration: 6 minutes, 31 seconds.
I discovered that due to a lucky co-incidence of voltage and internal resistance, a 100W LED can be connected directly across the terminals of two 18V Nickel Cadmium power tool batteries. And that ... -
Dangerous GU10 LED Spot Light is Cheap and Bright but could Kill You - Seriously - Duration: 4 minutes, 34 seconds.
This GU10 LED spot light is cheap (£3 including postage) and bright. But it's also lethal! There's a 50% chance of putting live mains within a few microns of the metal casing (which is what you'll ... -
Updates to 12V 100W LED Hardware - Heatsinks, Grease & Lens/Reflector - Duration: 4 minutes, 10 seconds.
To run a 100W LED from a 12V battery you need a few bits and pieces. A high power boost converter to generate the 36 volts at about 3 amps. Lots of metal, thermal grease and heatsink hardware. And ... -
1-Day Project: Build Your Own Arduino Uno for $5 - Duration: 14 minutes.
Clones of the popular Arduino Uno are now so cheap, it's difficult to save money by building your own. But the knowledge gained from assembling an Arduino from individual parts, makes the exercise ... -
Review: 30,000mAh Solar Power Bank - It's a pile of Junk! - Duration: 9 minutes, 31 seconds.
eBay is awash with these solar mobile power banks, most claiming way more storage capacity than is genuinely inside - this one has just 4,800mAh of LiPos. The unit only charges properly in full sun... -
LED Tutorial: Light a 10W LED from 12V - Simple & Cheap - Duration: 12 minutes.
A cheap and simple way to connect a 10W LED to a 12 volt supply. A current regulated LED driver keeps the LED at maximum brightness, while a heatsink and fan keeps it at a safe temperature. Total c...
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Playing with High Power LEDs
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50W High Power LED is as bright as a 500W Halogen - Duration: 2 minutes, 58 seconds.
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10W 12v LED Floodlight with PIR detector - Duration: 2 minutes, 4 seconds.
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50W LED powered from 12V Car Battery using DC/DC Boost Converter (part 1) - Duration: 2 minutes, 48 seconds.
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50W LED powered from 12V Car Battery using DC/DC Boost Converter (part 2) - Duration: 112 seconds.
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Comparing a 100W LED with 2x 55W H4 Car Headlight Bulbs - Duration: 115 seconds.
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Updates to 12V 100W LED Hardware - Heatsinks, Grease & Lens/Reflector - Duration: 4 minutes, 10 seconds.
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High Power LED Tutorial #2 - How to Drive 5W & 10W COB LEDs from 12V - Duration: 8 minutes, 5 seconds.
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High Power LED Tutorial #1 - How to Drive 1W and 3W LEDs from 12 Volts - Duration: 7 minutes, 56 seconds.
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Arduino MPPT Solar Charge Controller
Design and build of a Maximum Power Point Tracking Solar Charge Controller based around an Arduino.-
MPPT Solar Charge Controller #1 - Introduction and Voltage Measurement - Duration: 3 minutes, 26 seconds.
I'm building a test rig which will measure solar panel voltage, current and power. With it I'll do a series of videos on open circuit voltage of solar panels, short circuit current, maximum power p... -
MPPT Solar Charge Controller #2 - Volts, Amps, Watts now Displayed - Duration: 3 minutes, 49 seconds.
Both the voltage and current sensors are now fitted and the code written. The display now shows volts, amps and watts. -
MPPT Solar Charge Controller #3 - New Display, Watts Peak and Bargraph - Duration: 3 minutes, 57 seconds.
Another week, another LCD. The alphanumeric display just didn't have enough screen real estate, and bargraphs would have been difficult to render.
The Nokia 5110 display (aka the 4884) is on eBay ... -
MPPT Solar Charge Controller #4 - Finding Maximum Power with the LAMB - Duration: 2 minutes, 14 seconds.
Finally built my variable DC load which I've named the LAMB (Large Array of Miniature Bulbs). Precious little sun here in the UK just now, but snatched a few moments today.
With the LAMB set to a ... -
MPPT Solar Charge Controller #5 - Plotting the IV Curve - Duration: 7 minutes.
Built a basic pixel plotting mode which displays the solar panel's IV curve. The curve has a distinct turning point (often called the knee) where maximum power is located. -
MPPT Solar Charge Controller #6 - 80W panel, 12V Battery & Autoranging Bargraph - Duration: 2 minutes, 45 seconds.
Time to connect a solar panel to a 12v battery and take a look at voltage, current and power. I'm using a bigger 80W panel now, so the bargraph has been modified to automatically change sensitivity...
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Playing with Solar Panels
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How to Remove Snow from Solar Panels - Fast - Duration: 71 seconds.
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Fixing a Solar Panel to a Fence using Double Slot Shelving - Duration: 3 minutes, 36 seconds.
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Preparing Solar Panels for the Low Winter Sun - Duration: 2 minutes, 15 seconds.
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Multiple PWM5 Solar Charge Controllers Charging Car Battery Bank - Duration: 2 minutes, 11 seconds.
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Playing with Solar - Adding more Panels - Duration: 8 minutes, 47 seconds.
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110Ah Car Battery connected to 80W Solar Panel - Duration: 104 seconds.
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Solar Power System with 20W Panel, PWM5 controller and SLA Gel Battery - Duration: 39 seconds.
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Created playlists
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ESP8266 Hack: Web Enabled LED - Playlist
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Playing with the Nokia 5110 LCD - Playlist
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It's Postbag! - Playlist
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Arduino PWM Solar Charge Controller - Playlist
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Playing with Arduino - Playlist
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Playing with Lithium Batteries - Playlist
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Playing with DC/DC Converters - Playlist
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Practical MOSFET Tutorial - Playlist
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Arduino MPPT Solar Charge Controller - Playlist
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Recent activities
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Review: ThruNite TN12 (2016 version) LED Torch Flashlight - Duration: 13 minutes.
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Julian's Logic: The S/R (Set/Reset) Latch - Duration: 16 minutes.
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Julian's Postbag: #51 - Banggood Special - Duration: 25 minutes.
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Playing with: 240-Watt Polycrystalline 60-Cell Solar Panel - Duration: 5 minutes, 49 seconds.
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Playing with Transistors: NPN 2N3904 Transistor Experiment - Duration: 9 minutes, 50 seconds.
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Julian's Ardutorials: Arduino as an ISP - Duration: 18 minutes.
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How to Pick a Lock - Plastic Padlock and Picks from Banggood - Duration: 10 minutes.
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Dubious Business Idea: LEDs, Resistors and 12V Car Electrics - Duration: 7 minutes, 44 seconds.
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Retro Electronics: Z80 Microprocessor Serial Data Transmitter - Duration: 17 minutes.
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Fun for £1: Poundshop VHF FM Transmitter Receiver Set - Duration: 14 minutes.
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Autopsy: Faulty PWM5 Solar Charge Controller - Duration: 16 minutes.
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Retro Electronics: Magazine Project - National Lottery Predictor - Duration: 14 minutes.
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Practical MOSFET Tutorial
Fancy using MOSFETs in your next project?-
Practical MOSFET Tutorial #1 - Introduction and Scope - Duration: 98 seconds.
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Practical MOSFET Tutorial #2 - N Channel, Low Side and the Body Diode - Duration: 8 minutes, 25 seconds.
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Practical MOSFET Tutorial #3 - P Channel and the Mobility of Holes - Duration: 5 minutes, 59 seconds.
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Practical MOSFET Tutorial #4 - N Channel, High Side and Bootstrapping - Duration: 7 minutes, 18 seconds.
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Practical MOSFET Tutorial #5 - Microcontroller Interfacing - Duration: 9 minutes, 55 seconds.
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Practical MOSFET Tutorial #6 - DCOI Opto-Isolator Driver - Duration: 7 minutes, 54 seconds.
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Featured Channels
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Julian's Reviews - Channel
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iforce2d - Channel
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bigclivedotcom - Channel
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pietkaify - Channel
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electrodacus - Channel
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Proyectos LED - Channel
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Painless360 - Channel
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alishanmao - Channel
Related channels
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