The Amp Hour Electronics podcast

#Science #Tech #The Amp Hour (Chris Gammell and David L Jones #The Amp Hour (Chris Gammell #Physics #Podcasting Education #David Jones

32:17

Jay is more than just the host of All About Change podcast. He is a lawyer and international activist, who has focused his life’s work on seeking social justice by advocating for the rights of people with disabilities worldwide. On the special episode of All About Change, Mijon Zulu, the managing producer of the "All About Change" podcast, is taking over hosting duties to interview Jay Ruderman about his new book, his activist journey, and why activism is even more important today. Episode Chapters (0:00) intro (02:38) How does one choose a cause to go after? (03:33) Jay’s path to activism (07:50) Practical steps a new activist can take (09:24) Confrontation vs trolling (17:36) Learning from activists operating in different sectors (19:20) Resilience in activism (22:24) Reflections on Find Your Fight and goodbye For video episodes, watch on www.youtube.com/@therudermanfamilyfoundation Stay in touch: X: @JayRuderman | @RudermanFdn LinkedIn: Jay Ruderman | Ruderman Family Foundation Instagram: All About Change Podcast | Ruderman Family Foundation To learn more about the podcast, visit https://allaboutchangepodcast.com/ Looking for more insights into the world of activism? Be sure to check out Jay’s brand new book, Find Your Fight , in which Jay teaches the next generation of activists and advocates how to step up and bring about lasting change. You can find Find Your Fight wherever you buy your books, and you can learn more about it at www.jayruderman.com .…

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A weekly podcast about the electronics industry. Occasional guests. Lots of laughs.

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The Amp Hour Electronics Podcast

The Amp Hour Electronics Podcast explicit

updated πριν 13 μέρες

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A weekly podcast about the electronics industry. Occasional guests. Lots of laughs.

61 επεισόδια

#Science #Tech #The Amp Hour (Chris Gammell and David L Jones #The Amp Hour (Chris Gammell #Physics #Podcasting Education #David Jones

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The Amp Hour Electronics Podcast

1
#691 – System Designer Lets You Try Every Part with Michael Gielda 1:11:55

πριν 13 μέρες1:11:55

1:11:55

Welcome back (for a third time!) Michael Gielda of AntMicro Michael and Chris usually see each other around the Zephyr booth at Embedded World , but not this year AntMicro continues to work on Zephyr , which targets hardware using Devicetree Renode Mult-node testing code aethero Data center in space Cosmic shielding corporation Tying the simulation to reality How do you know an actuation has happened RESD – Renode sensor data format Drone data example Finding and testing the variety of use cases Borderline criteria Fuzzing Kenning AutoML Anomaly detection on an MCU with Kenning Co-op example Adding System designer Environment al board Aerocore2 STM Camera Checking on the pin / assignment problem Supporting vendors that have good support / open source ADI plugins for Zephyr Root of Trust Caliptra Interested in AntMicro services and products? Check out offering.antmicro.com…

The Amp Hour Electronics Podcast

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#690 – Clap on, clap off, lights flicker 1:02:15

πριν 25 μέρες1:02:15

1:02:15

Meetup.com doubled their prices so the 3H Triangle group moved to Luma (same is true for SF, Seattle) Note taking apps after Evernote was gutted: Joplin , Obsidian Battery leakage in a DMM Causes of leak The PCB of a Tonie box with an SD card glued in place. Board has an ESP32-S3. ( Product page ) Design decisions – Latched / unlatched EEVblog video Pulse stretcher 3rd mode ‘break on open’ Chris is working on a design inspired by the Apple AirTag Golioth just launched Bluetooth support (recorded prior to this announcement) It has an nRF52840 and NFC onboard, with a bunch of sensors. It won’t work with FindMy nroot tag Linus video about M4 Mini Jeff Geerling talking about storage MKBHD iPhone16e NTN Keyfinders The Clapper SAW filters Dave’s talk at UNSW (months ago) How did you learn about oscilloscopes without the internet AC power issues – brownout? need to scope power Scale of electricity…

The Amp Hour Electronics Podcast

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#689 – A Jumperless Breadboard with Kevin Cappuccio 1:14:05

πριν 6 weeks1:14:05

1:14:05

Welcome Kevin Cappuccio, creator of the Jumperless Breadboard (v5 and before) Check out the Jumperless v5 on Crowd Supply OG Jumperless Video This update shows a bunch of images with the breadboard off 3M whitelabels their breadboards (because of the adhesive?) Breadboard spring clips Spring clips (in 3D) Elecrow 369 CH446Q , a clone of Zarlink MT88161 FPAA Resistance of the traces BSky Schematic CLOSS network Power Op Amps +/- 9V supply Or just all the parts laid out in one pic Layers/routing Probe circuit Bus Pirate adapter Raspberry Pi adapter Interface Full color WJP 3d printing ( and on X ) Zephyr shells You can still buy these on CrowdSupply Repos https://github.com/ Architeuthis-Flux/JumperlessV5 https://github.com/ Architeuthis-Flux/Jumperless https://github.com/ Architeuthis-Flux/breadWare Follow Kevin online Bsky Mastodon Discord…

The Amp Hour Electronics Podcast

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#688 – The Tandy Train 1:10:01

πριν 8 weeks1:10:01

1:10:01

Tracking test equipment on one long homepage… the emporer of test equipment If you track it, it’s not hoarding…it’s curation Very specific piece of junk wood Garage Solar Amber allows you to sell power back in Australia at some wild rates Dave is trying out case design in OpenSCAD…it looks…ok Pebble is returning to the world after Google open sourced the OS (kudos) Andrew Witte, former CTO of Pebble, was a guest on the show Tandy200 Annie Lennox on the train with her Tandy (see cover image) Capacitive forming / reforming Electric Dreams Multimeter repair Tandy teardown…

The Amp Hour Electronics Podcast

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#687 – The RP2350 with the Raspberry Pi Team

πριν 10 weeks

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Welcome James Adams , Chris Boross , Liam Fraser , and Luke Wren ! The last time the RPi team was on the show was about the RP1 (#648) The order of parts being released was RP2040->RP1->RP2350 Check out the datasheet for the RP2350 Learning from silicon Security and power states The part is a “Dual dual core” The Arm side is a Dual M33 The RISC V side is a Hazard 3 processor , designed by Luke based on a previous processor called the Hazard 5 HB5 There is a mux on the core and you select which side you’re going to use at boot There are 48 GPIO (but users always want more) Chris Boross (first time on the show) is on the commercial team. He’s seing interesting applications for the RP2350 including devices that are using it for motor control. They also have seen the part used in satellites because mRAM or masked ROM is less susceptible to radiation errors The PIOs have changed, but are more evolutionary from the RP2040 The PIO allows you to create state machines that process inputs without processor interventions, basically like tiny cores 2 cores – 8 total Interesting PIO applications Luke still likes that DVI on 2040 that was discussed on the first episode they were on (#529) CAN is possible USB host / device MII / RMII ULPI – USB 2.0 Phy The core frequency only increased 133 MHz -> 150 MHz. There is tougher timing with the M33 LVT – lower voltage threshhold 30 -> 40 pins There are now variants listed on the RP2350 product page (but not in mass production) that include flash in the SOM package RP2040 was one power domain “Powerman” (and of course AVR Man ) Switched core AON – always on 32 kHz There is a C/C++ SDK that is the basis for other ports Security is a focus for the RP2350 Bootrom in every chip Secure boot M33 features – secure / non-secure RISC V PMP RCP – Redundancy Coprocessor Raspberry Pi had a challenge / bounty for getting the secret out of the RP2350 OTP with secure boot One of the few silicon companies doing this sort of thing in public Past guest Aedan Cullen was one of the hacks called “Hazardous threes”. He gave a talk about it at 38C3 Past guest Colin O’Flynn was also mentioned because collaboration around side channel attacks with the Chip Whisperer IOActive used a FIB – Fine Ion Beam – and passive voltage contrast to capture an impressive image of a decapped chip (see the RPi post ) “Never want to see ‘novel technique’ in an email” Improving the RP2350 silicon How do you decide what to fix/leave? Can it be changed in metal/vias? SIO spinlock not being fixed Chicken Bit Filler cells are reprogrammable and help with fixes It costs approximately $50K per layer to change (ostensibly because of the high costs of masks) ULA – uncommitted logic array Die shrink doesn’t seem to make sense Will keep making each chip as long as 40 nm fabs are around Thinking about the RP2040 The easiest way to get started is to use a Pico (RP2040) or a Pico 2 (RP2350). Both have connectivity options as well. Raspberry Pi is now a public company! Doesn’t change much other than the business scrutiny.…

The Amp Hour Electronics Podcast

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#686 – A Benchtop Pick and Place with Stephen Hawes

πριν 11 weeks

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Welcome, Stephen Hawes ! Chris interviewed Stephen back in 2020 for his second episode of The Contextual Electronics Podcast. It was when Stephen was still working at Formlabs and the Lumen/Opulo were a glimmer in his eye. The Lumen v4 is a Benchtop Pick and Place machine that works with OpenPNP Where are we in relation to reprap? Powered feeders Videos about eeprom KiCad pos file Can reliably place 0402 Lumen v4 product page Motherboard of v4 Running Marlin FW Head has two heads/nozzles Compare the Lumen to other methods (hand placed, paying for assembly) OHM (Open Hardware Manufacturing) podcast What industries are open? Thea Flowers (of Winterbloom synth fame ) just joined the team Microscope Other tools Space constraints Stephen does a great job talking through many experiments and upcoming features on his youtube channel Prototyping PCBs with a fiber laser Micronix Making PCBs on a 3D printer (hack session with Stephen’s former employer) Timon (Skerutsch) makes double sided PCBs by inserting enameled wire through drilled holes Is this the year you should get a Pick and Place? Stephen won’t say yes (but I will)…

The Amp Hour Electronics Podcast

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#685 – Data Provenance in the Home, Server, and Fab

πριν 15 weeks

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Home assistant Homelab subreddit Solar assistant proxmox CarPlay / android auto NUCs Video Interview with Lee (since posted as #684 of TAH) 25K pound amplifier repair and associated EEVblog forum post Louis Rossman also talking about the copyright claim How the Fairlight CMI changed Music Read more here Synths / woodworking are hobbies that will eat all free cash flow (and Chris is considering the latter… ) Pat Gelsinger has stepped down / retired / been forced out at Intel Intel will now have co-CEOs . As past guest Luke Wren wrote on Mastodon, “ Based on historical trends I predict the number of Intel co-CEOs will double every two years “ Startup in Ohio will apparently be making Quectel parts for the US market . We expect to see lots of silliness like this in the next few years because of forthcoming tariffs……

The Amp Hour Electronics Podcast

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#684 – Lee Felsenstein: The Computer Revolution & Counterculture

πριν 17 weeks

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A full 3 hour discussion with the legendary Lee Felsenstein, designer of the Osborne 1, SOL computer, VDM-1, Pennywhistle modem, and the inventor of social media. Covering everything from the Berkeley free speech movement, the counterculture movement, his career, through to Obsorne and how he invented social media with Community Memory. His book: https://www.amazon.com/Me-My-Big-Idea… https://felsensigns.com/ 00:00 – Full 3 hour talk with Lee Felsenstein 08:24 – University of California at Berkeley, and the Free Speech Movement. 29:04 – First Junior Engineer job at Ampex 36:20 – The first hackathons with Richard Greenblatt 37:33 – Hackers, Heros of the computer revolution 1:03:36 – Techical career at Ampex 1:12:52 – Atari Computers and Steve Jobs, Nolan Bushnall, and Allan Alcorn 1:15:00 – He tried to pitch social media to Steve Jobs 1:22:15 – Designing the Pennywhistle 103 modem + 1:25:36 – Marty Spergel selling kits 1:31:53 – Steve Wozniak and how the Apple 1 is NOT a personal computer 1:43:42 – Osborne Computers 1:53:22 – Osborne 1 physical design 1:57:57 – Osborne 1 development timeline 2:01:19 – The Osborne Effect wasn’t what killed the company…

The Amp Hour Electronics Podcast

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#683 – Troubleshooting is the skill

πριν 20 weeks

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AI tools for helping with coding ( but NOT layout , amirite) Troubleshooting as a skillset Stick meme Dave got an updated electrical box Home assistant Keith Burzinski episode (ESPhome) Toothbrush show Andreas Spiess discussing Bluetooth proxy Ian Scott Johnson DIY home automation Electrarc240 reviews every element of a linear power supply India power cables Buried cables Spotify is bricking the Car Thing but others are trying to save it “injurnear” Chris recently developed and coded up a cellular connected relay board for a Smart Locker application…

The Amp Hour Electronics Podcast

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#682 – Your Mind Is The Tool

πριν 22 weeks

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Chris has been troubleshooting a PCB with a dead short on inner layers (put in by board house by mistake) Don’t Touch My Gerbers shirt “Is there an AI tool that will fix this for me?” … No Chris dumped a bunch of current in the board and looked at it with this thermal camera 6.5 digit DMM to track down shorts Etching problems in the old days 100% etest Adding rails to PCBs for production Reddit discussion thread: why not work on a product? That is, Dave, the wise one. Videos Live stream issues Post from Twitter: Is 2 layers all you really need? This person thinks so, or is trying to convince themselves as much. Armchair quarterbacking Ian Johnston replacing the display on an 8.5 digit DMM Jack Ganssle has posted his final newsletter (The Embedded Muse)…happy retirement! Jack has been on the show twice: Episode 54 (!) Episode 489 Ward Christensen, Inventor of BBS and XModem, (and former listener of the show!) has passed away Dave is interviewing Lee Felstenstein for our next episode…

The Amp Hour Electronics Podcast

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#681 – Compact High Speed Design with Lukas Henkel

πριν 22 weeks

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Welcome Lukas Henkel of OV Tech GmbH , a product design firm based in Nuremburg Germany! Miniturization and the limits of miniturization Price is a constraint Using standard PCB tech (off the shelf) Open source SIP Steps Conventional pcbs / components Silicon inductors embedded in boards Bonded Bare dies / stacked Need volume to make it work Requirements to fit into ______ iMX8 ULP – 0.4mm CSP SIP Footprint Module abstraction layer talk Framework laptop Software support / BSP SIP will be different than PiMX8 Crowdsupply campaign launching 2-3 weeks and delivery in Dec/Jan OpenSource laptop CM4 vs PiMX8 SPI Flash with backup partition Secure element SE050 Footprint for coral tpu and Halo 8 Trying to solve the problem of vision use cases Marketing using layout / products but also making money on it Katerina show Visualizing simulations Developing intuition OpenEMS Usability is based on python scripting Using Blender for heat map BVTKNodes uses .vtk file output Multiphysics solvers Things that drive Lukas For HDI, Thinking in 3D / 2.5D and being able to visualize Layers ranging from 4 to 18 Any layer design for SIP Wurth electroncis for high density “any layer stackup” Article series on altium for the open laptop Follow Lukas on LinkedIn Lukas also was a co-founder of PCB Arts . We had his cofounder Saber on the show in the past.…

The Amp Hour Electronics Podcast

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#680 – Catching Rockets with Musk Sticks

πριν 24 weeks

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Starship 5 landed on chopsticks! (you know, in case you have been offline for 2 weeks) Dave’s EV had a stuck cable Portable charger is surprisingly good CCS Charging standard Fast charge 36/50 kW MKBHD Chevy Silverado review JLC is now offering silkscreen QR codes to have individually marked boards That’s the board that Chris has been designing on a livestream each week 1 wire UID (pioneered by Dallas, then Maxim, now Analog…le sigh) Dave is selling a new Bryman multimeter, the BM2257 ( teardown photos ) Chris just returned from Embedded World North America, doing a demo at the Joulescope booth Chris also gave a talk at the Zephyr meetup which will be released in a few weeks Hackaday article about their comment section and project/article feedback References Musk Sticks NC floods might impact the supply chain due to Spruce Pine NC being a source for quartz. We didn’t read this article, but it was a better explainer than we had at the time . Meshtastic objects to the proposed FCC changes…

The Amp Hour Electronics Podcast

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#679 – Satellite Design Engineering with Dan Esparon

πριν 25 weeks

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Dan Esparon from Inovor Technologies in South Australia joins Dave to discuss all about the engineering of designing and launching satellites! Dan works for Inovor Technologies , an Australian company that designs and builds satellites entirely in-house! Recently they designed and launched the aussie Kanyini satellite on a SpaceX Falcon 9 rocket https://www.inovor.com.au/missions/ They design and build their own Flight computers, ADCS systems, UHF radios, Battery modules and Solar Arrays in Australia.…

The Amp Hour Electronics Podcast

1
#678 – All About Antennas with Katerina Galitskaya

πριν 27 weeks

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Welcome Katerina Galitskaya ! Chris started following Katerina’s antenna posts on LinkedIn Monopole vs dipole Lower frequences are harder bc longer wavelength PCB size half of frequency Place antenta on the shorter side How to ruin your PCB When to go to a antenna engineer? Where will the device be? Antenna environment Start from vacuum, start adding elements Dummies in the lab. The one in the episode photo is a dummy head filled with liquid (?!) SAR – Specific Absorption rate Simulation vs lab work (dimensions) Anechoic chamber When to go with custom antenna? Buying off the shelf antenna? New Airpods with fancy 3D antenna Ben’s video about laser sintered antennas MIMO / Beamforming the failed promises of 5G When to simulate Some open source programs out there (“EMSee”?) Simulating vs visualizing Most of the time it’s not about vizualizing fields What is the iteration elements of the antenna? Satellite antenna design Good to go external Thinking about the dielectric const of case Follow Katerina on LinkedIn !…

The Amp Hour Electronics Podcast

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#677 – Watt Is The Deal

πριν 28 weeks