How I did a PZEM-015 DC universal energy meter Battery Tester DC Voltage Current Power Capacity Internal And External Resistance Residual Electricity Meter With 50A Shunt, in a box.
Very useful tool for solar installation and battery charging and testing. A must!
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https://www.youtube.com/watch?v=lThOo0dwtU8
Some more experiments ..splitter and attenuators..
https://www.allaboutcircuits.com/tools/n-way-power-divider-calculator/
https://www.digikey.com/en/articles/the-fundamentals-of-rf-power-dividers-and-combiners
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https://www.youtube.com/watch?v=qT5Eji1yFQk
It's getting to something! The mold and resin injection comes to some resuslts. Thomann SP5500 with broken keyboard attempt to fix. Beautiful mechanism fully weight piano keys. This model's keys are similar Medeli: DP-680, Clifton SP-5500, Thomann DP-85, SP-5500, Kurzweil KA110
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https://www.youtube.com/watch?v=Q_E_OuOohGY
How to start editing your own videos with Vegas Pro 18, beginners level, easy and fast, nice and simple. Part 2 is the final result! For better understanding see Part 1'' How to''...
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https://www.youtube.com/watch?v=uZnj8w-eXIA
This is for people who knows to works with mains AC ! There is live mains involved, be careful!
How to make a differential dual power supply using refurbished laptop power supplies 150W +-19.6V DC.Perfect for small home amplifiers.
00:00 enter the actors
00:50 let's check the laptop power supplies
01:43 dismantle and more checks
02:15 Don't try that at home !
03:16 dismantle second PS
04:55 let's pack the PS
06:39 Last test !
07:55 There we are ! A perfect dual PS !
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https://www.youtube.com/watch?v=oDnIL6spdUE
TC-Helicon Vocelive Play GTX noise floor tests.Amazing good results, low noise and lot of dynamic.It makes a very good USB sound card with dedicated microphone preamplifier and phantom power.Also great instrument, guitars and audio line in for home recording in DAW.
00:27 about the inputs and connections
02:00 let's have the fake ''signal sources''
04:00 fake mic test
06:12 instrument in, fake guitar test
07:18 auxiliary line in test
08:20 let's red the record, noise and statistics
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https://www.youtube.com/watch?v=xWFCPGYMur8
Testing power consumption on a TS100 with a BC2 tip.
About firmware here https://github.com/Ralim/IronOS
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https://www.youtube.com/watch?v=jSkYCoI7dR8