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Welcome Matt Liberty, creator of the Joulescope! The Joulescope solves the problem of measuring current with a high dynamic range. There are very different sense resistors when measuring active current vs sleep current Chris learned this when working on electrometers at Keithley. The key thing is keeping the burden voltage low so it does not brown …
 
Welcome Jonathan Beri, founder of Golioth! Today’s episode is sponsored by Mouser Electronics, who are discussing RISC-V. Check out their page on resources about RISC-V and how you can purchase kits that include chips using the open source ISA and learn more about how they can benefit your project. What makes IoT so hard? “It’s a system of systems”…
 
Welcome Brian Faith, CEO of QuickLogic! Past guest Tim Ansell introduced us to Brian, from their work together on the open toolchain. They met at a tradeshow and Brian declined the first time, only to be convinced later. QuickLogic IP licensing Brian attended OR Conf in Bordeaux, where they were watching talks and excited by future growth of users …
 
Welcome back, Mike Harrison! This is Mike’s 5th appearance on The Amp Hour! 135 224 294 412 Mike’s work is working on large light installions, so there has been a bit of a lockdown slowdown. He’s spending his time developing a product that will be a dimmer for AC based LEDs Leading edge vs trailing edge dimming SI8751 Mike mostly cares about turnof…
 
Welcome back, Jeff Keyzer (@MightyOhm)! Jeff has been selling the MightyOhm Geiger Counter Kit and other products on Amazon He has also been consulting lately, helping clients with hardware certifications, regulatory compliance and EMC. These are separate tasks from product safety RyanAir is buying 737-MAX airplanes ESD is part of EMC UL testing CE…
 
Welcome Fredrik Kensander of KraftPowercon! Fredrik lives in Sweden, one of our first guests from there (Simone Giertz is also from Sweden originally, but now lives in the US) KraftPowercon makes large scale Switch Mode Power Supplies (SMPS) that are in the range of 100-200 kW output. Here is a datasheet of an example produce There are a range of d…
 
Daryl is the former head designer at Laservision, a world leading Australian outdoor laser display and projection mapping company responsible for many of those incredible outdoor laser display such as the Marina Bay Sands in Singapore. (Not directly discussed in the show) Sydney harbor tunnel “Soft Stop” sign for trucks that won’t fit: Softstop™ Ba…
 
Dave did a teardown of a plane transponder, so we talk a bit about RF (without much knowledge) There is a PIC16C84 on board Learning or relearning Transmits 1030 MHz, receives 1090 MHz, 140W We’ll ask Jeff Keyzer on the upcoming Keyzermas Crystal radio is basically a pin diode with long antenna. Dodgy wiring on 3.5kW aircon Coefficient of performan…
 
Welcome Michael Gielda of Antmicro and the CHIPS Alliance! We were introduced to Michael by past guest Tim Ansell Antmicro was a founding member of RISC V, which they first found out about at a workshop at CERN Open RISC Renode is “a simulator to build embedded systems faster” Antmicro is a service organization at their core (contract/consulting se…
 
Welcome Joris Aerts of Hiber! Joris introduced us to Maarten (CTO of Hiber), who we had on episode 427 Chris had asked Joris about Starlink, but it will require “the pizza box”, which is a phased array modem that will track satellites to maintain connectivity as they pass overhead. That’s different than how the Hiber setup works. The Hiber team had…
 
Welcome Brandon Gilles and Brian Weinstein of Luxonis Holding Corporation They make the DepthAI system, which uses the Intel Movidius Myriad X It was initially created for life safety problems, specifically targeted at distracted drivers. There is research that a car horn on a bike can help to lower fatal interactions. Brandon had multiple people i…
 
Chris has been diving into work (to ignore the US elections). He has also been enjoying OTA DFU with Nordic parts 1K video on EEVblog. There was also a Hackaday 1K contest. BLE112 module USB PD Vishay Thermal jumper Thermal design Pick and place heat sink “Thermion” “Hot Air Rises and Heat Sinks: Everything You Know About Cooling Electronics Is Wro…
 
Welcome Jay Carlson! The new article “So you want to build an embedded Linux system” is 35,000 words. Why not a book? Friend of the show Drew Fustini was on embedded last week talking about building Linux Jason and Robert from BeagleBoard.org on TAH “I’m your classic electrical engineer” For the aforementioned article, Jay designed 10 boards with d…
 
We resume our discussion of “specialist” vs “generalist”, as discussed many other times on the show. We started out talking about how Chris recently hired Bilal, who is a great developer focused on Zephyr. We discuss how that kind of focus can be useful to a young developer. Chris was first exposed to Zephyr on the BeagleConnect, a new IoT product …
 
Welcome Shannon Parks of Parks Audio! We haven’t had many audio guests selling directly to the consumer. Chris rewatched High Fidelity recently and was spotting Chicago locations. Adam Savage visits Jack White’s pressing factory in Detroit (Third Man Records) 2014 recordstore day in Bloomington Illinois “Zoomers” Parks Audio’s main product is the P…
 
Chris has a remote troubleshooting setup for his ABC boards Dave once designed PCBs over remote desktop Chris had to do remote chip design in college…while trying to learn Unix at the same time “The Best Software of PCB Design EVER” on the EEVblog forum Educational curriculum laziness (not wanting to make new content). We discussed this a little wi…
 
Eli helped Chris out with some Zephyr stuff recently! His background is in low level embedded, c, RTOS He got FreeRTOS running at a conference after sitting with someone who convinced him to consider an RTOS instead of just a superloop. RTOS book Traffic analogy Pyrotechnics Eli was a guest on The Macrofab Engineering Podcast, not too long ago and …
 
Want an Amazon Ring Drone in your house? Dave is back in his old lab and his mic was not working. Tel Aviv charging electric buses via the road? 3 classes of charger in Australia for EVs 240V * 10 A = 2400W 240V * 30A = 7200W 3 phase = 22 kW Knob and tube wiring CCS connector Can you plug into most connectors? There are Type 1 and Type 2, with adap…
 
Welcome Jared Wolff of Circuit Dojo! Jared is a graduate of the Rochester Institute of Technology (which Chris also considered attending). He did co-ops while there, like we talked about on last week’s episode. While on co-op at Cisco, he was in the cable group and marveled at the techs doing repairs with magnet wire. He is an east coast guy at hea…
 
Today’s episode is sponsored by Mouser Electronics. They have been writing about Artificial Intelligence (AI) and how it impacts electronics designers, such as our listners. Paul Golata from Mouser Electronics talks with Chris during the ad break about how AI is changing the world for the better. To check out the free resources, including an eBook …
 
Louis Rossmann from Rossmann Repair Group joins Dave to discuss Right To Repair legislation and repairability of products, and setting up an industry standard for independent repair. Also moving his business, realestate, and Louis’s thoughts about what will happen to New York. Louis’s Youtube Channel. Right to Repair petition in Australia.…
 
Chris will be out the next few weeks, he’ll be going on honeymoon! Res Med CPAP 10 year trends Chris has found some tutors on Upwork for learning about FreeRTOS on the nRF52 Other platforms Skills in teaching Chris was having trouble with solderpaste application due to fixed stencils. Dave has done a video of stencil application. Dave has been tryi…
 
Welcome, Kyle Dumont of Allspice! Kyle has a background in EE and worked at iRobot. After that he worked at Voxel8 on the Developer’s Kit, the 3D printer that could do plastics plus circuits. You may remember a quadcopter that could fly off of the print bed. Using a high end milling machine, they could get 100 micron trace/space. They did this by m…
 
We were four minutes into an episode when we realized we weren’t recording. So this show is just a tribute. Chris just launched the Contextual Electronics Podcast! There are already three episodes released, and another three recorded! Sophy Wong Stephen Hawes Erik Larson Chris uses Streamyard for recording video. We use Zencastr for The Amp Hour. C…
 
Welcome Mohammed Kassem, CTO of eFabless! This is well timed after we talked with Tim Ansell in episode 501 on about Google’s announcement around the open source PDK. OpenLANE was mentioned in that episode, but that is run by eFabless Traditionally, the semi industry had been very closed. Small companies struggled to get a custom chip made, and it …
 
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