
#569 – Electric Fields, Son.
Explicit content warning
12/06/21 • 65 min
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- Dave and other YouTubers have been making reaction/explainer videos about Veritasium’s video, “The Big Misconception about Electricity”
- Feynman lectures
- How electricity gets to you (Wendover)
- World’s largest solar array using HVDC
- Photonicinduction
- Electric Buses
- Linus Tech Tips is growing their lab (and business)
- Do career prospects change for people above 40 in the hardware industry? How is it different from the software industry, discussed on hacker news?
- Chris recently went full-time at a startup called Golioth. Not mentioned on the show, but Chris also wrote about it here.
- Started by former guest Jonathan Beri
- Golioth is built to work with Zephyr RTOS currently.
- In a former episode, Chris talked about hiring Bilal to write drivers for cellular modems, but that still wouldn’t hook into databases, it just throws MQTT packets at a server.
- Chris was able to build a proof-of-concept using cellular modems in 3 hours total.
- Sam Feller (former Engineer Blogs writer) wrote about keeping in touch using a CRM.
- Amazon Re:Invent is offering private 5G networks in factories
-
- Dave and other YouTubers have been making reaction/explainer videos about Veritasium’s video, “The Big Misconception about Electricity”
- Feynman lectures
- How electricity gets to you (Wendover)
- World’s largest solar array using HVDC
- Photonicinduction
- Electric Buses
- Linus Tech Tips is growing their lab (and business)
- Do career prospects change for people above 40 in the hardware industry? How is it different from the software industry, discussed on hacker news?
- Chris recently went full-time at a startup called Golioth. Not mentioned on the show, but Chris also wrote about it here.
- Started by former guest Jonathan Beri
- Golioth is built to work with Zephyr RTOS currently.
- In a former episode, Chris talked about hiring Bilal to write drivers for cellular modems, but that still wouldn’t hook into databases, it just throws MQTT packets at a server.
- Chris was able to build a proof-of-concept using cellular modems in 3 hours total.
- Sam Feller (former Engineer Blogs writer) wrote about keeping in touch using a CRM.
- Amazon Re:Invent is offering private 5G networks in factories
Previous Episode

#568 – YouTube to Consulting with Florin of Voltlog
This episode was sponsored by Mouser Electronics. Check out TheAmpHour.com/immersive for more information about Immersive Technology and how it might change your engineering workflow.
Welcome, Florin of the Voltlog YouTube Channel!
- Florin is a YouTuber and consulting engineer based out of Romania.
- Chris has many of the low cost finds that Florin discusses on his channel, often on the “In The Mail” segments. His focus on low cost comes from the hassle of importing and paying VAT on equipment.
- Florin likes that Mouser allows him to pay the taxes up front.
- He got into electronics early and eventually ended up selling dev boards to his school based on the PIC32.
- After school, he went to work in the automotive space, including for Continental
- Florin once met up with past guest Andreas Spiess, while he was visiting Romania.
- Automotive videos come from his general interest in cars but also working on automotive chips for Freescale in France from 2011-2012
https://www.youtube.com/watch?v=_m2UW_pron4
- ECU
- The ESP32 CanLite has GPIO in addition to LIN/CAN
- CAN bus is a protocol, without any requirements on the formatting of the message (or frame)
- The parts (and the entire product) would need to work over a wide temp range to be useful in a car long term.
- What are users doing with the CanLite?
- Grabbing info from car
- Interfacing with CAN
- We have discussed CAN bus with Macchina on the show before
- CAN works with a “lowest wins” bus topology.
- Florin is also consulting when he’s not making videos. People find him via YouTube.
- He has had 3 Different labs, in his latest, he made a custom workbench:
https://www.youtube.com/watch?v=mmjLSHljyD4
- IoT
- Florin recently got into ham radio (callsign: YO4VLT) and built a UHF repeater/gateway:
https://www.youtube.com/watch?v=EprSIw-5l6w
- His new office also has a Tasmota floor heater, so he built a control board for it
https://www.youtube.com/watch?v=kZS3ggG0QJI
- Looking for gift ideas for the holidays? Florin has you covered:
https://www.youtube.com/watch?v=J3mq0lt7Vlw
- Chris asked for 2 recommendations off the list:
- Cheap option: a metal plunger for syringes for dispensing paste or flux
- More expensive, but still around #100: a Uni-T waveform generator:
https://www.youtube.com/watch?v=MgDaWwS72QQ
Automated Transcript
The transcript is autogenerated from Zencastr, our recording software. We attach no guarantees to its accuracy, but offer it as a way to make the show more accessible: 568 – Voltlog – Auto-Transcript
Next Episode

#570 – Keyzermas All The Way
Welcome back, Jeff Keyzer AKA Mightyohm!
- Jeff has been consulting, including back at Valve working on a part of the Steam Deck
- CES Con-Flu
- Dead projects
- Sirenza Microdevices
- Portfolio sites – Dave’s friend Steve Hale has been documenting for decades!
- RIFA caps
- Jeff had to replace them to get his HP35665A working
- RIFA – “Replace If Found Always”
- X class capacitor
- The HP35665A is good for lower frequency analysis, including shock and vibe
- App notes
- 3560A
- Dave made a video about Coherence recently that was in this realm
- Kemet / Yageo still makes RIFA
- Modal Analysis
- Charge amplifier
- Voltage dependence of capacitors
- LTT
- Jeff has been trying to attend events that are able to happen in Seattle, like the recent 3H holiday party
- Museum in Bellingham – Spark museum
- James Lewis talks about bandwidth vs sample rate on a recent video
- Bunnie writes about “Fixing a small corner of the supply chain”
If you like this episode you’ll love
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