Category Archives: Miscellaneous

EEVblog #1088 – Uber Autonomous Car Accident Report

The NTSB today released the report into the fatal Uber Autonomous car accident.
TLDR;
The RADAR, LIDAR, and cameras DID detect and classify pedestrian bicycle correctly.
The system DID determine that emergency braking was required.
But Uber disabled the systems emergency braking feature in autonomous mode.
Uber also disabled Volvo’s inbuilt pedestrian safety detection Continue reading EEVblog #1088 – Uber Autonomous Car Accident Report

EEVblog #1087 – UNBELIEVABLE Alesis Studio Monitor Fault!

An unbelievable fault in Dave’s Alesis M1 Active 520USB powered studio monitor speaker.
Can you discover the culprit before Dave does?
This was supposed to be a boring trivial repair of a power LED, but it turned into something much more interesting.
Teardown: https://www.youtube.com/watch?v=KsBVBtUDYx4

Forum: https://www.eevblog.com/forum/blog/eevblog-1087-unbelievable-alesis-studio-monitor-fault/

EEVblog Main Web Continue reading EEVblog #1087 – UNBELIEVABLE Alesis Studio Monitor Fault!

EEVblog #1086 – 5 Year Solar Power Results – Payback?

Dave looks at the 5 year data on his 3kW home solar power system. What was the payback period? And will adding a Tesla Powerwall 2 lithium ion battery energy storage solution be worthwhile?

PVoutput data: https://pvoutput.org/list.jsp?userid=22501

Installation: https://www.youtube.com/watch?v=VGENVguQQmo
Previous Update: https://www.youtube.com/watch?v=dEqlOj6_m0Q

Forum: <a href="http://www.eevblog.com/forum/blog/eevblog-1086-5-year-solar-power-payback/" Continue reading EEVblog #1086 – 5 Year Solar Power Results – Payback?

EEVblog #1085 – Bypass Capacitors Visualised!

An in-depth practical visualisation of how bypass capacitors work at both high and low frequencies.
Bulk decoupling capacitors vs bypass capacitors.
Capacitor placement and types are tested and the results examined.
How package inductance can have a large effect.
Loop area and what is means, it’s impact on EMC emissions, and how Continue reading EEVblog #1085 – Bypass Capacitors Visualised!

EEVblog #1084 – Pocket Multimeter Shootout Part 2

Some quick extra tests on the 6 of the 14 pocket multimeters from Part 1 : https://www.youtube.com/watch?v=LCFEonQDkQU
Which meter *won’t* survive testing?
Forum: http://www.eevblog.com/forum/blog/eevblog-1083-pocket-mutimeter-shootout/

EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2

Support the EEVblog through Patreon!
http://www.patreon.com/eevblog

Stuff I Continue reading EEVblog #1084 – Pocket Multimeter Shootout Part 2

EEVblog #1083 – Pocket Multimeter Shootout

14 pocket multimeters from $8 to $65 are torn down and compared for feature set and build quality.
Ranging in price from $8 to $65, which one is the best in each price category?
Timestamps:
6:07 XB866 Wun Hung Lo
9:42 ANENG AN8203
15:47 $10 Shootout Summary
16:14 Uni-T UT10A
19:12 Uni-T UT120B/120C
22:41 UNI-T Shootout Summary
23:05 Jaycar Continue reading EEVblog #1083 – Pocket Multimeter Shootout

EEVblog #1082 – What is the UL logo on products?

What does the UL type approval logo on consumer products mean?
What about TUV, ETL, GS, CCC and other marks?
Dave breaks down safety standards and compliance marks.

Previous video on the CE & FCC mark: https://www.youtube.com/watch?v=f0uvS80YIGU

Forum: http://www.eevblog.com/forum/blog/eevblog-1082-what-is-the-ul-logo-on-products/

Underwriters Laboratory UL Standard catalog: https://standardscatalog.ul.com/
ETL mark: Continue reading EEVblog #1082 – What is the UL logo on products?

EEVblog #1081 – Are Bypass Capacitors REALLY needed?

Can a product work without ANY bypass capacitors?
Dave has some fun finding out if “Muntzing” the Gigatron TTL computer works, i.e. removing all the bypass capacitors.
Lots of interesting talk on bypassing, grounding, probing, signal integrity, ground loops, loop area, noise and crosstalk.
TLDR; Don’t remove all your bypass caps, they are Continue reading EEVblog #1081 – Are Bypass Capacitors REALLY needed?

EEVblog #1080 – Gigatron TTL RISC Kit Computer Review

Review of the Gigatron.io TTL 8 bit RISC computer kit.
http://www.gigatron.io

Live 4 hours build: https://www.youtube.com/watch?v=wECZoUNd2GY

Forum: http://www.eevblog.com/forum/blog/eevblog-1080-gigatron-ttl-risc-kit-computer-review/

EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2

Support the EEVblog through Patreon!
http://www.patreon.com/eevblog

Stuff I recommend:
https://kit.com/EEVblog/

Donate Continue reading EEVblog #1080 – Gigatron TTL RISC Kit Computer Review