Post Day, stuffs ordered from AlieExpress, couple of external power banks, steering wheel cover and headphones power amplifier. ... https://www.youtube.com/watch?v=1jUDFUjMQGU
Just got an US variant RAK 8db, not sure if it is original, but let's dismantle and take a look.Anyway it will be mod for EU 868MHz LoRA
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https://www.youtube.com/watch?v=2_hFOCekgo0
Variable focal length for SJCAM 4K Air or any other sport camera GoPro like, improve the versatility of shooting , from landscape to macro.
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https://www.youtube.com/watch?v=ufA4vKHtnBA
A Roalnd EM2000 keyboard SMPS power supply under revision and test. So far a dedicated circuit got blown..also electolitic capacitors need replacement.This is part 1
Tools: TS100 soldering https://www.miniware.com.cn/product/ts100-soldering-iron-package-electric-soldering-kit/
M8 Component tester https://www.aliexpress.com/item/1005003429220990.html?spm=a2g0o.productlist.main.57.660317ecB9efU1&algo_pvid=4f9d5d30-651b-491f-8ec1-f170b11f5700&algo_exp_id=4f9d5d30-651b-491f-8ec1-f170b11f5700-28&pdp_ext_f=%7B%22sku_id%22%3A%2212000028320734574%22%7D&pdp_npi=2%40dis%21RON%21138.88%2179.14%21%21%21%21%21%402102188b16700973925596414d0735%2112000028320734574%21sea&curPageLogUid=TUmItAmpAqLt
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https://www.youtube.com/watch?v=pbsSu1sP7Ho
A very simple way to solve ''decalibrated'' clamp meters in DC measurements. Kaiweets HT208D and Bside ACM03 under test.
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https://www.youtube.com/watch?v=e4V-ZyIMHGc
How I recovered Bell New90 EasyNote TM86 , eventually LUBUNTU installed and remarks.Never through away electronics, can be useful someday!
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https://www.youtube.com/watch?v=zwFE0D54BmE
DIY 4P 118650 Li-ion external battery kit efficiency test. Is it worth it? Let's take a look. Also LCD backlight fix.
Tools: Charsoon Antimatter 250W/10A https://youtu.be/EXEocjClWDU
USB digital tester
https://www.aliexpress.com/item/32816538942.html?spm=a2g0o.productlist.main.1.185a3c2c1nSlwT&algo_pvid=ef37cc6d-a5e6-45bc-882d-9af81c748453&algo_exp_id=ef37cc6d-a5e6-45bc-882d-9af81c748453-0&pdp_ext_f=%7B%22sku_id%22%3A%2265583548524%22%7D&pdp_npi=2%40dis%21RON%2170.7%2156.56%21%21%21%21%21%4021227f0f16699890086755586d075e%2165583548524%21sea&curPageLogUid=urpCEohtMlU4
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https://www.youtube.com/watch?v=-E2r0AWf2og