Abonnér på EEVblog feed EEVblog
No Script, No Fear, All Opinion
Opdateret: 40 minutter 46 sekunder siden

EEVblog #1147 – MAD! 1 Cent Regulator!

tor, 15/11/2018 - 13:09

Is a 1 CENT LDO voltage regulator any good?
Dave tests the Shen Zhen Fine Mad! SC662K 3.3V LDO from LCSC
a.k.a. http://www.superchip.cn

Forum HERE

EEVblog #1146 – New Rigol MSO5000 Oscilloscope

man, 12/11/2018 - 00:41

World Exclusive!
A teardown and quick look at the new lower cost mid-range 70-350MHz Phoenix chipset based Rigol MSO5000 mixed signal oscilloscope, to be release on the 13th Nov. Stating at US$909.

How does it compare to the 7000 series scope just released 5 months ago?

Forum http://www.eevblog.com/forum/blog/eevblog-1146-new-low-cost-rigol-mso5000-oscilloscope/

EEVBlog #1145 – Dumpster Diving 4K TV!

man, 12/11/2018 - 00:39

Dave finds a 65″ 4K UHD LG LCD TV in the dumpster!
Will it work?
Bonus teardown included.

Forum https://www.eevblog.com/forum/blog/eevblog-1145-dumpster-diving-4k-tv/

EEVblog #1144 – Padauk Programmer Reverse Engineering

man, 12/11/2018 - 00:37

David looks at the pins on the Padauk PMS150 programmer for potential reverse engineering.
TLDR; It doesn’t look easy to reverse engineer this protocol, it’s messy with lots of voltage levels, as Padauk said it would be.
Just buy the programmer for now!
There is also a Flash/EEPROM re-programmable version of the chip, the PFS154C.

Forum https://www.eevblog.com/forum/blog/eevblog-1144-padauk-programmer-reverse-engineering/

EEVBlog #1143 – Eakins Microscope Barlow Lenses

man, 12/11/2018 - 00:35

Check out the amazing increased working distance on the Eakins microscope using a barlow lens to get a larger working area.

Bundle: http://s.click.aliexpress.com/e/b7ycSav2
Microscope: http://s.click.aliexpress.com/e/eN3Ec5a
Stand: http://s.click.aliexpress.com/e/bHSXalzm
C Mount Lens Adapters: http://s.click.aliexpress.com/e/cMimkzYc
Barlow Lenses: http://s.click.aliexpress.com/e/bmS9nWbe

Forum HERE

EEVblog #1142 – EEVblog LAB Tour – Before

man, 12/11/2018 - 00:29

A tour of the shambles that is the EEVblog lab, before the big move.

Forum HERE

EEVblog #1141 – Padauk 3 CENT Micro – Programmer

man, 12/11/2018 - 00:25

Using the Padauk programmer to program the 8 pin SO PMS154C micro and flash a LED on a breadboard.

Forum HERE

EEVblog #1140 – 3 CENT Micro LED Blinky with ICE!

man, 12/11/2018 - 00:23

Getting the 3 cent Padauk microcontroller to blink a LED.
Or at least the in-circuit emulator blinking a LED with C.
UPDATE: LCSC have just said that they will offer a free programming service for a limited time to anyone. Just email them when you place your order.

Forum HERE

EEVblog #1139 – OCXO Oven Oscillator Repair

man, 12/11/2018 - 00:20

Well, repair-ish. Fixing the adjustment issue in the Systron Donner oven crystal oscillator. More issues found though.

Forum HERE

EEVblog #1138 – Systron Donner Counter Teardown

man, 12/11/2018 - 00:17

Teardown Tuesday
An early 1970’s Australian made Systron Donner Nixie tube display counter/timer.

Forum HERE

EEVblog #1137 – Mailbag Monday

man, 12/11/2018 - 00:15

Mailbag Monday

Forum HERE

12:20 iTron VFD Displays
16:06 Oscilloscope Component Tester
Schematics: https://kabinett.homepage.t-online.de/bucket/Octopus/Octopus_SCM.jpg
BOM: https://www.dropbox.com/s/he3ef0wfknn19eg/Octopus_BOM.csv
In-depth description of the project:
22:23 Random Chinese Mailbags

EEVblog #1136 – Banksy Artwork Shredder – Part 2 (Still Trolling!)

man, 12/11/2018 - 00:13

Banksy posted an update video showing more of the prank build and the shredding mechanism. But he’s still trolling us!

Forum HERE

Banky’s Directors Cut video

EEVblog #1135 – Science Fair 200-in-1 with Sagan

man, 12/11/2018 - 00:10

Sagan builds a rain detector circuit with Dave’s original Science Fair Tandy / Radio Shack 200-in-1 electronics projects kit from the 1980’s, and testing it using Dave’s first multimeter!

Forum HERE

Watch Sagan soldering for the first time!

EEVblog #1134 – Dumpster Diving Teardown Tuesday

man, 12/11/2018 - 00:06

Dave got a tip-off on a dumpster full of instruments, so raced off to check it out, what will he find?

Forum HERE

EEVblog #1133 Mailbag Monday

man, 12/11/2018 - 00:04

Mailbag Monday, teardown bonanza!

Forum HERE

– West German Geiger Counter Teardown
– 6:35 Leo Bodnar Oscilloscope 40ps Pulse Generator for oscilloscope bandwidth measurement.
– 11:32 Pocket Sprite Keyring Gameboy Teardown
– 14:31 Defibrillator Simulator Teardown
– 21:23 – Philips CD Discman Teardown

EEVblog #1132 – The 3 Cent Microcontroller!

tir, 06/11/2018 - 22:40

Taking a look at a sub 3 cent microcontroller, and other obscure Chinese manufactures, how to find them, and were to get them in stock.


Forum HERE

EEVBlog #1131 – £1M Prank – Banksy Artwork Shredded! HOW?

ons, 17/10/2018 - 08:06

A look at how the Banksy artwork prank “Girl with a Balloon” shredded itself moments after being sold for £1M at a Sotheby’s auction.
How long did it sit idle waiting to be triggered?, and was this actually possible?
NOTE: The Artwork was authenticated by “Pest Control”, which is Banksy’s own authentication house. If the artwork was delivered to them for checking before the auction, this is when they installed the mechanism. I still think the at least the seller has to be in on it, and likely the buyer (otherwise they could sue Banksy and bring his real name into the public). And if Sotheby’s were in on it (they’d lose their reputation if they were) they look like fools. Lose–lose for Sotheby’s.

Forum HERE

EEVblog #1130 – Mailbag Monday

ons, 17/10/2018 - 08:02

More Mailbag Monday

Forum HERE

A-TEK AT-601 PC ISA Bus Design Breadboarding Tool
Gigatron TTL computer update


VintageTek museum XY demo board
1970’s Casio CQ-1 Calculator
Zofz PCB Gerber Viewer

EEVblog #1129 – Creating a Nice Readable Schematic

ons, 17/10/2018 - 08:00

How to turn a horrible unorganised schematic into a nice readable modular schematic with proper signal flow.
Tips on industry standard and expected layout techniques.

Using the open source Haasoscope oscilloscope as an example.

Please do NOT complain about the length of this video. I know. It is what it is.

9:28 LED configuration
12:28 Single Page Vs Multi page schematics
14:24 Net lines and bus lines
25:25 Connection stuff
36:32 Consistent component symbols
37:29 Signal flow from left to right (schematic reorganisation part 1)
44:15 The great nF debate
46:18 Text designation (Part II)
47:57 Net line Vs Port (for blocks)
49:43 Description on blocks
50:02 Signal f low from left to right (schematic reorganisation part 2)
1:08:38 Don’t put junctions on line cross-overs (Don’t cross the streams)

Forum HERE

EEVblog #1127 – Studio Monitor Speaker Noise – Part 2

fre, 05/10/2018 - 08:22

Follow-up to the Studio Monitor Noise video, replacing the mains power supply with a battery supply. Does the noise floor go away?

Forum HERE