EEVblog on Odysee

A repair of this Tennismatic T1000 remote control was way more interesting than I expected.
https://tennismatic.com/main/page_products_ball_machines_t100_series.html

Forum: https://www.eevblog.com/forum/blog/eevblog-1702-a-most-interesting-repair/

00:00 - Tennismatic 1000 Tennis ball machine remote control
00:53 - Battery snap ohms measurement
01:17 - Battery current measurement
02:29 - It's a row/column thing
02:57 - Teardown
05:20 - Membrane inspection
06:44 - Membrane keypad continuity test
07:25 - Pro Tip: Using multimeter as a shorting lead. Testing the microcontroller.
09:27 - Is it the membrane connector?
10:17 - What would take out the entire keypad?
12:10 - Closer inspection of the contacts
12:44 - Ah Ha! What's this?
13:48 - Inspecting and testing the row membrane connections
15:01 - Conductive silver ink time
16:41 - The culprit identified
18:48 - Let's try some fresh conductive silver paint
21:36 - DAMN IT! Dave goofs.
22:56 - How conductive silver ink/paint works
24:01 - Measurements after curing
26:01 - Winner Winner Chicken Dinner


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#ElectronicsCreators #Repair #Tennis
...
https://www.youtube.com/watch?v=BSqKN2AaGqI

The Insta360 Ace Pro 2 action camera comes with Ransomware out of the box. You MUST give them all your private data to register the camera through the app or it won't work. I'm sick of this crap, don't buy Insta360 or DJI products. And change your profile picture to a Clippy.

DJI Pocket 2 Ransomware: https://www.youtube.com/watch?v=dtqBbaVNI0c
Louis Rossmann Clippy: https://www.youtube.com/watch?v=2_Dtmpe9qaQ

Forum: https://www.eevblog.com/forum/blog/eevblab-132-insta360-ace-pro-2-camera-ransomware/

Web Site: http://www.eevblog.com
Hardware Store: https://eevblog.store/
Merch Store: https://eevblog.dashery.com/

If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Or with crypto:
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ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c
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USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
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Other channels:
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#ElectronicsCreators #insta360acepro2 #Insta360
...
https://www.youtube.com/watch?v=2GJZrRL75uA

The $599 Moku:Go from Liquid Instruments is an Australian designed and manufactured USB/Ethernet/WiFi instrument, with 14 instruments in 1, and a 4 channel power supply.
Oscilloscope, Voltmeter, Logic Analyser, Waveform generator, Frequency Response Analyser, Lock in Amplifier, Laser Lock Box, Spectrum Analyser, PID Controller, Digital Filter, FIR Filter Builder, Data Logger, Pattern Generator.
https://liquidinstruments.com/products/hardware-platforms/mokugo/

00:00 - The Moku:Go from Liquid Instruments
02:56 - Teardown
07:06 - Designed and manufactured in Australia
10:32 - Cooling and heatsinking
12:57 - Detailed look at the power supply
16:00 - The OPA547 high voltage high current opamp
19:36 - The analog front end
22:15 - Optional Extras
24:13 - The software
26:17 - The Oscilloscope
29:43 - Not your traditional oscilloscope interface
31:12 - Where is the mixed signal capability?
32:15 - Why can't you use multiple instruments as the same time?
33:06 - Export options look good
33:47 - The fan noise isn't good
34:35 - The waveform generator
38:38 - Tongue action
38:59 - I had to resort to using another oscilloscope, LOL
39:30 - Are you KIDDING ME?
41:24 - Wait, THAT'S how you use two instruments at once?
43:56 - Why are they duplicating code?
44:49 - Spectrum analyser
45:33 - Another way to use two instruments at once?
46:50 - Wait, yet ANOTHER way to use two instruments...
48:33 - Low frequency spectrum analyser
49:10 - Where is the user manual for multi-instrument mode?
51:29 - They might have been thinking too hard...
52:18 - Frequency Response Analyser
53:20 - The Arbitrary Waveform Generator looks good
54:01 - The Power Supply
56:57 - The value here isn't in general instrumentation
57:36 - Building a system, a simple digital filter...
1:02:17 - Another hidden way to view waveforms...
1:06:05 - Conclusion

Forum: https://www.eevblog.com/forum/blog/eevblog-1701-australian-made-mokugo-instrument-review/

Web Site: http://www.eevblog.com
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USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
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#ElectronicsCreators #Review
...
https://www.youtube.com/watch?v=oIQvd4eEd4c

Can you convert a dumpster LCD TV into a light panel?
HP320 Spectrometer: https://s.click.aliexpress.com/e/_okJifdp
LED LCD Panel Teardown: https://www.youtube.com/watch?v=kdtyxt9OLlU

Forum: https://www.eevblog.com/forum/blog/eevblog-1700-do-dumpster-lcd-tvs-make-good-led-light-panels/

Web Site: http://www.eevblog.com
Hardware Store: https://eevblog.store/
Merch Store: https://eevblog.dashery.com/

If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Or with crypto:
BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM
ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c
BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4
USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
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#ElectronicsCreators #dumpsterdiving
...
https://www.youtube.com/watch?v=NvZBvUFscg0

To all Australian's, it's very important to protect your online privacy, and you should definitely take the official advice of the Australian government and eSafety Office on how to protect yourself using a VPN.

00:00 - Keep yourself safe online using this advice from the official eSafety Office eKaren
02:38 - Use a VPN is the official advice, recommended by the Australian Government!
06:45 - What does the Australian Signals Directorate recommend?

Links:
https://beconnected.esafety.gov.au/pluginfile.php/75892/mod_resource/content/3/index.html
https://www.cyber.gov.au/protect-yourself/staying-secure-online/security-tips-remote-working

Web Site: http://www.eevblog.com
Hardware Store: https://eevblog.store/
Merch Store: https://eevblog.dashery.com/

If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Or with crypto:
BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM
ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c
BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4
USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF

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#Australia #VPN #Privacy
...
https://www.youtube.com/watch?v=VPJlrFRrixA

Part 1 of the µTimer project, a versatile benchtop lab timer.
Choosing the LCD, and getting two sample LCD's running. One using a demo board, and one that needed to be hacked onto a Raspberry Pi.

00:00 - Benchtop Lab Timer Project
01:19 - It's all about the choice of LCD
03:14 - ERC19624-1 192x64 Transflective 4" LCD
03:44 - Reflective vs Transflective LCD's
05:01 - ER3806 Font Chip
06:06 - Demo Board
09:10 - LCD Bias Angle and Viewing Angle Explained
11:45 - What is THAT? LCD Bleeding?
13:19 - Power consumption measurement
15:48 - Trying another LCD, the ERC19624-6. What difference does a dash number make?
17:15 - Bodging on the LCD connector to the breakout board
20:34 - The pin offsets and lack of routing is annoying...
22:10 - Reprogramming the 8051 demo board, it should be easy, right?
26:32 - Entering The Matrix
29:40 - More soldering
30:33 - The Programmer Software doesn't work without a HEX file...
32:17 - All of that for nothing...
33:40 - Let's try this Arduino / Raspberry Pi ST7525 LCD code
35:36 - Getting the Raspberry Pi running and installing the BCM2835 C library
38:56 - Getting the Make to work on the source code.
40:01 - Make Clean should work...
41:16 - Winner Winner Chicken Dinner
41:10 - Power consumption measurement. This one is supposed to be much lower...
42:58 - Changing the LCD contrast in software
45:10 - Is it better or worse than the first LCD?
46:37 - Conclusion

Links:
https://www.buydisplay.com/4-inch-low-cost-white-192x64-graphic-cog-lcd-display-st7525-spi
https://www.buydisplay.com/4-inch-cog-192x64-display-graphic-lcds-module-ist3020-black-on-white
http://www.airspayce.com/mikem/bcm2835/
Font Chip: https://www.buydisplay.com/download/manual/ER3806-1_Datasheet.pdf


Web Site: http://www.eevblog.com
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#ElectronicsCreators #Project #Design
...
https://www.youtube.com/watch?v=KhQn-RUDZ3I

I scored this GW Instek APS-7050 Precision AC Power Source on Ebay, let's check it out.

Forum: https://www.eevblog.com/forum/blog/eevblog-1698-awesome-ebay-ac-power-source-gw-instek-aps-7050/

Web Site: http://www.eevblog.com
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#ElectronicsCreators #teardown #Ebay
...
https://www.youtube.com/watch?v=8QkCZUWYoY8

Why does this Uni-T UDP6731 PSU use different brand LM358 opamps on the same PCB?

Links:
Jellybean Opamps: https://www.youtube.com/watch?v=uq1DMWtjL2U
NESS Factory tour: https://www.youtube.com/watch?v=bTij7Juj5qE
http://www.artschip.com/pdf/LM358.pdf
https://www.st.com/content/ccc/resource/technical/document/datasheet/61/46/87/01/98/ed/44/c5/CD00000464.pdf/files/CD00000464.pdf/jcr:content/translations/en.CD00000464.pdf

Forum:

Web Site: http://www.eevblog.com
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#ElectronicsCreators
...
https://www.youtube.com/watch?v=7NeZeqy0Knk

A short tutorial on the maximum efficieny and power you can get from a wind generator. Also applies to water turbine generators.
Also deriving the industry standard wind power formula from first principles: Power (W) = 1/2 x ρ x A x v^3
Don't let any wind power marketing scams fool you, you canna' beat the laws of physics Captain, or Betz's Law.

Forum: https://www.eevblog.com/forum/blog/eevblog-1696-tutorial-wind-power-101/

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#Physics #windenergy #windpower
...
https://www.youtube.com/watch?v=tnrazDCiTTc

More mailbag!

00:00 - Nifty USB Knob from Tiny Little Gadgets
https://www.etsy.com/uk/shop/TinyLittleGadgets
03:38 - Reference Circuit PCB books
https://www.boltind.com/product-category/reference-circuits-books/
09:57 - Robin RCD/ELCB Tester
https://www.youtube.com/watch?v=E0Iz7HscYTQ
20:57 - Geekom IT12 i7 Mini PC
https://amzn.to/4lDaIKr

Forum: https://www.eevblog.com/forum/blog/eevblog-1695-mailbag-robin-rcd-tester-pcb-book-usb-knob-geekom-it12-mini-p/

Web Site: http://www.eevblog.com
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Or with crypto:
BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM
ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c
BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4
USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF

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#ElectronicsCreators #Mailbag
...
https://www.youtube.com/watch?v=8B4y9yym5iE