Recent Posts

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1
EL Testing of Solar Panels. What is it & How to do it. - Part 1

https://www.youtube.com/watch?v=8huUsh9eu8U

EL Testing of Solar Panels. What is it & How to do it. - Part 2

https://www.youtube.com/watch?v=7hQ2PHWnGiA

A look at what EL / Electroluminescence is and how to do it.
* How to use a full spectrum / astro / paranormal camera to see cracks and flaws on a solar panel.
* Are solar panels cracked and flawed from the manufacturer. I test a brand new solar panel.
Some interesting reading on the topic:

Comparison of Electroluminescence Image Capture Methods:
https://www.osti.gov/biblio/1395801​

Solar panel micro cracks explained:
https://sinovoltaics.com/quality-control/solar-panel-quality-an-introduction-to-micro-cracks/

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2
T4D #148 - Ocean Optics USB2000+ Spectrometer and other bits Pt 1

https://www.youtube.com/watch?v=A4W_fpXF1CI

T4D #148 - Ocean Optics USB2000+ Spectrometer and other bits  Pt2

https://www.youtube.com/watch?v=kx2Y9KPldX0

In this T4D video:
* A look at some of the equipment changes on my bench and why I'm finding older / vintage test equipment very handy.
* A look and explanation on the testing on spectral response of solar panels.
* A look at the Ocean Optics / Insight USB2000+ Spectrometer. How it works and calibration.


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3
YouTube Video Episodes / Why Are SunPower Solar Panels More Efficient?
« Last post by SeanB on December 09, 2020, 01:30:46 PM »
4
YouTube Video Episodes / T4D #147 - EL Testing, HA Clock update and Driveway
« Last post by SeanB on December 04, 2020, 01:52:30 PM »
T4D #147 - EL Testing, HA Clock update and Driveway

https://www.youtube.com/watch?v=nsP4EY7LyTQ

* An introduction to EL (Electroluminescence) testing of solar panels.
* High Accuracy clock update - driving a quartz clock (Lavet stepper motor) with Arduino.
* My driveway is finished, time to solar power the Nissan Leaf!
Comparison of Electroluminescence Image Capture Methods:
https://www.osti.gov/biblio/1395801

Support me through Patreon or by using my Amazon Store:
Patreon: https://www.patreon.com/mjlorton
Amazon Store: http://astore.amazon.com/m0711-20

PCBWay SMT Service only $30 with Quick Turnaround Time

https://www.pcbway.com//?from=mjlorton

https://www.pcbway.com/activity/xmas2020sales.html
5
YouTube Video Episodes / YINLONG 2.3V 30Ah LTO Cycle Test Wrap-up
« Last post by SeanB on November 30, 2020, 10:46:56 AM »
YINLONG 2.3V 30Ah LTO Cycle Test Wrap-up

https://www.youtube.com/watch?v=_gpcmM4_AQk

A look at the results of my long term cycling testing of the YINLONG 2.3V 30Ah Lithium Titanium Oxide Battery.

https://www.kokpower.com/new-product-yinlong-lto-66160-30ah-2-3v-battery-lto-lithium-titanate-battery_p167.html

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6
YouTube Video Episodes / Soliom S600 Wireless Solar Security Camera Review - Part 1 and 2
« Last post by SeanB on November 16, 2020, 11:23:39 PM »
Soliom S600 Wireless Solar Security Camera Review - Part 1

https://www.youtube.com/watch?v=v-3ttm1noD4

Part 2

https://www.youtube.com/watch?v=gcO-cLH3wmk

A review of the solar powered Soliom S600 Wireless PT Security Camera vs Ring Stick Up Cam.

SOLIOM S600 Home Security Camera Outdoor Pan Tilt Spotlight Solar Battery Powered $58, it saves 36% after using the code
Link: https://www.amazon.com/dp/B083TX4J2D

Code: GDYSGF7R
Code OFF: 24% off code and $20 off coupon
Sell Price: $159
Price after code: $100.84
Date:10/11/2020 - 22/11/2020


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7
Older Technology / Thermostat upgrade
« Last post by SeanB on November 08, 2020, 01:30:28 PM »
Replaced this slightly elderly thermoswitch, using a more modern digital one.  Original is a 96x96mm unit, new one is a more modern 48x48mm unit, so a blanking plate was needed to fill the hole.

Original one from 1976, just slightly out of calibration, as turning the dial (broken in trying to get it open, though it was more or less so already) as the pointer was pointing at 120C, while the heater element was at 160C, a small 40C plus error. Strangely enough I can actually buy them as new stock off Aliexpress, and there apparently is a US company that refurbishes the old ones, there must be enough demand to still keep these running, but at a price. New is a bog standard BTC controller, a lot more capable, PID, multiple input types and 2 outputs in the package, as opposed to this old one with nothing other than some hysteresis, and a meter to show error in the setpoint and input. Had to glue that back, just to show, as the little bit of tape fall off years ago it would seem, and the meter movement was floating inside the case. No IC's in sight, just analogue discrete circuits and a real wound iron transformer to provide power for the electronics.
8
YouTube Video Episodes / SOK LiFePO4 Battery Test Review
« Last post by SeanB on November 05, 2020, 11:22:02 AM »
SOK LiFePO4 Battery Test Review

https://www.youtube.com/watch?v=uKpBqPHNli4

A Review of the SOK LiFePO4 Battery:

https://www.sokbattery.com/100ah-12v-lifepo4-deep-cycle-battery.html

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10
YouTube Video Episodes / Measuring Noise - HP 3400A True RMS Voltmeter - Part 2
« Last post by SeanB on October 21, 2020, 02:28:19 PM »
Measuring Noise - HP 3400A True RMS Voltmeter - Part 2

https://www.youtube.com/watch?v=1Pdcoi8-K60


------------------------------ Click "Show more" -------------------------------------------
A look at the challenges of measuring power supply noise and ripple on oscilloscopes and multimeters. A look at the HP 3400A True RMS Voltmeter
which has enough bandwidth, impedance matching and crest factor to do these measurements to less than 1 mV or up to 300 V.

Dave's video: https://www.youtube.com/watch?v=Edel3eduRj4

eBay seller that sells refurbished HP 3400A units (now SOLD):
https://www.ebay.com/itm/HP-3400A-RMS-AC-Voltmeter-Upgraded-to-SS-Refurb-Calibrated-w-Certificate-/284025406435?_trksid=p2349526.m4383.l10137.c10&nordt=true&rt=nc&orig_cvip=true

HP 3400A Docs:
https://archive.org/details/hp_3400A_manual/page/n1/mode/2up
https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1964-01.pdf
https://ia600202.us.archive.org/24/items/hp_3400A_manual/3400A_manual.pdf
http://bee.mif.pg.gda.pl/ciasteczkowypotwor/HP/3400A.pdf
https://www.manualslib.com/manual/1197872/Hp-3400a.html


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