The Amp Hour Electronics Podcast

[https://theamphour.com/wp-content/uploads/2025/04/692.png] We are doing a 2025 listener survey [https://forms.gle/16kKK8Zhykx39oJF6]! Answer the survey and put in your email to win one of three Jumperless OG units donated by Kevin Cappuccio (past guest of the show [https://theamphour.com/689-a-jumperless-breadboard-with-kevin-cappuccio/]) Note: this was corrected from the original, these are not v5 units, they are the original Jumperless units. Apologies for the confusion ~CG * Chris signed on to get solar installed * He’ll be taking advantage of Duke Energy’s PowerPair [https://www.duke-energy.com/home/products/powerpair], a program to get a bulk amount for the battery and ongoing payments to act as a virtual power plant. * Telsa Powerwall 3 Teardown [https://www.youtube.com/watch?v=0VeX4j0gn3g] * Australian politicians are proposing money for batteries for everyone in Australia * Peter Walkinson batteries [https://www.youtube.com/watch?v=eldXifbNm2A] * CATL [https://en.wikipedia.org/wiki/CATL] batteries * Back powering off a Chevy Bolt [https://www.youtube.com/watch?v=I_j0NPZrH-c] * AC battery power * Peaker plant * Check out the rates for peak power in New South Wales (high!) [https://aemo.com.au/Energy-systems/Electricity/National-Electricity-Market-NEM/Data-NEM/Data-Dashboard-NEM] * Base load * Chris is working on a new series for tiny hardware [https://blog.golioth.io/designing-and-building-an-airtag-clone-a-new-series-from-golioth/] * nRF52840 [https://www.nordicsemi.com/Products/nRF52840] * With careful planning, it’s possible to get a “0.4 mm pitch” (found out it’s actually 0.35 mm!) onto the JLC 6 layer process [https://m.jlcpcb.com/pages/topicPage/6-layer-pcb] because they now allow via in pad. * Jumperless v5 episode [https://theamphour.com/689-a-jumperless-breadboard-with-kevin-cappuccio/] (though as a reminder, we’re giving away the OG versions, not the v5) * Dave review of Jumperless (mailbag video) [https://www.youtube.com/watch?v=QQhQ7yXogwo] * We are doing a 2025 listener survey [https://forms.gle/16kKK8Zhykx39oJF6] and added some new questions * Slow trigger  [https://www.youtube.com/watch?v=mfZcvvBwoj8] * R&S version  [https://www.youtube.com/watch?v=RuIBgQP5tAQ] * Laminated cheat sheet * Jeff Geerling Bosch video  [https://www.youtube.com/watch?v=5M_hmwBBPnc] * The Tariffs in the US are an absolute mess. Since recording they have been downgraded, but they are definitely still going to have some outsized influece on the electronics world. * Chris thinks that it makes more sense to race to the bottom of available parts (like the new $0.10 CH572 [https://www.cnx-software.com/2025/04/02/10-cents-wch-ch570-ch572-risc-v-mcu-features-2-4ghz-wireless-bluetooth-le-5-0-usb-2-0/] with Bluetooth), pay the tariff, and put in more time and effort on the software. Not that Chris is the intended audience, but also that it’s not going to have the effect that is * Ghostbusters song [https://en.wikipedia.org/wiki/Ghostbusters_(song)]

[https://theamphour.com/wp-content/uploads/2025/03/691-MichaelGielda.jpg] Welcome back (for a third time!) Michael Gielda [https://www.linkedin.com/in/mgielda/?originalSubdomain=se] of Antmicro [https://antmicro.com/] * Michael and Chris usually see each other around the Zephyr booth at Embedded World [https://www.embedded-world.de/en], but not this year * Antmicro [https://antmicro.com/] continues to work on Zephyr [https://zephyrproject.org/], which targets hardware using Devicetree [https://docs.zephyrproject.org/latest/build/dts/index.html] * Renode [https://renode.io/] * Mult-node * testing code * aethero [https://www.linkedin.com/feed/update/urn:li:activity:7233857958416162816/] * 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 [https://antmicro.com/blog/2022/12/synchronized-multi-sensor-data-in-renode-with-resd] * Drone data example * Finding and testing the variety of use cases * Borderline criteria * Fuzzing [https://en.wikipedia.org/wiki/Fuzzing] * Kenning AutoML [https://antmicro.com/blog/2025/03/automl-models-for-embedded-in-kenning/] * Anomaly detection on an MCU with Kenning [https://antmicro.github.io/kenning/gallery/anomaly-detection-on-mcu.html] * Co-op example * Adding * System designer [https://designer.antmicro.com/welcome] * Environment al board [https://designer.antmicro.com/hardware/devices/stmicroelectronics-stm32g474cet6] * Aerocore2 STM [https://designer.antmicro.com/hardware/devices/96b_aerocore2] * Camera [https://designer.antmicro.com/hardware/devices/axiom_gamma_4k_camera] * Checking on the pin / assignment problem * Supporting vendors that have good support / open source * ADI plugins for Zephyr * Root of Trust Caliptra [https://github.com/chipsalliance/caliptra-rtl] * Interested in Antmicro services and products? Check out offering.antmicro.com [https://offering.antmicro.com/#/home]

[https://theamphour.com/wp-content/uploads/2025/03/690-1024x1024.jpg] * Meetup.com doubled their prices so the 3H Triangle group moved to Luma [https://lu.ma/triangle3H] (same is true for SF, Seattle) * Note taking apps after Evernote was gutted: Joplin [https://joplinapp.org/], Obsidian [https://obsidian.md/] * Battery leakage in a DMM [https://www.youtube.com/watch?v=KqlHjIVyzOA] * Causes of leak * The PCB of a Tonie box [https://photos.app.goo.gl/r1HaK8Bx9mYavRAh8] with an SD card glued in place. Board has an ESP32-S3. (Product page [https://us.tonies.com/pages/toniebox]) * Design decisions – Latched / unlatched EEVblog video [https://www.youtube.com/watch?v=9lC-k5yU9W4] * Pulse stretcher [https://www.eevblog.com/forum/beginners/pulse-extender-circuit/] * 3rd mode ‘break on open’ * Chris is working on a design inspired by the Apple AirTag [https://www.apple.com/airtag/] * Golioth just launched Bluetooth support [https://blog.golioth.io/bluetooth-to-cloud/] (recorded prior to this announcement) * It has an nRF52840 [https://www.nordicsemi.com/Products/nRF52840] and NFC onboard, with a bunch of sensors. * It won’t work with FindMy [https://www.icloud.com/find/] * nroot tag [https://nroottag.github.io/] * Linus video about M4 Mini [https://www.youtube.com/watch?v=71jBX5N3wcM] * Jeff Geerling talking about storage [https://www.youtube.com/watch?v=eLtE2kMTVOQ] * MKBHD iPhone16e [https://www.youtube.com/watch?v=qF4vZxbSmjo] * NTN [https://www.3gpp.org/technologies/ntn-overview] * Keyfinders  [https://en.wikipedia.org/wiki/Key_finder] * The Clapper [https://www.youtube.com/watch?v=Ny8-G8EoWOw] * SAW filters [https://www.everythingrf.com/community/what-is-a-saw-filter] * Dave’s talk at UNSW (months ago) [https://www.youtube.com/watch?v=riBwRC_CaAA] * How did you learn about oscilloscopes without the internet [https://www.eevblog.com/forum/beginners/retired-engineers-how-did-you-learn-using-oscilloscope-in-80s-without-internet!/?topicseen] * AC power issues – brownout? need to scope power * Scale of electricity

[https://theamphour.com/wp-content/uploads/2025/02/689-Kevin.jpg] Welcome Kevin Cappuccio, creator of the Jumperless Breadboard (v5 and before) * Check out the Jumperless v5 on Crowd Supply [https://www.crowdsupply.com/architeuthis-flux/jumperless-v5] * OG Jumperless Video [https://youtu.be/_k0aKM68Xl4] * This update shows a bunch of images with the breadboard off [https://www.crowdsupply.com/architeuthis-flux/jumperless-v5/updates/beta-units-have-left-the-nest] * 3M whitelabels their breadboards (because of the adhesive?) * Breadboard spring clips [https://www.tindie.com/products/architeuthisflux/solderable-breadboard-spring-clips/] * Spring clips (in 3D) [https://3dviewer.net/#model=https://github.com/Architeuthis-Flux/JumperlessV5/blob/main/Jumperless23V50/Spring%20Clips/SpringClips5holes.step] * Elecrow * 369 * CH446Q [https://www.wch-ic.com/products/CH446.html], a clone of Zarlink MT88161 [https://www.futurlec.com/Datasheet/Zarlink/MT8816AE.pdf] * FPAA * Resistance of the traces * BSky [https://web-cdn.bsky.app/profile/architeuthisflux.bsky.social] * Schematic [https://private-user-images.githubusercontent.com/20519442/248527932-202a61f6-0eb1-44bd-9d80-3b208e9c4be2.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.K5H9phCxL455h85xFlqD33lYuF63MVQ9FiB7EhIvz3U] * CLOSS network * Power Op Amps * +/- 9V supply * Or just all the parts laid out in one pic [https://x.com/arabidsquid/status/1838685928736592026] * Layers/routing [https://bsky.app/profile/architeuthisflux.bsky.social/post/3lhrcbksbbs2j] * Probe circuit [https://leds.social/@ArchiteuthisFlux/113853536177753698] * Bus Pirate adapter [https://bsky.app/profile/architeuthisflux.bsky.social/post/3ldjj33ezxc22] * Raspberry Pi adapter [https://bsky.app/profile/architeuthisflux.bsky.social/post/3ldgyfava2s2q] * Interface * Full color WJP 3d printing [https://bsky.app/profile/architeuthisflux.bsky.social/post/3lby4h36z5c2o] (and on X [https://x.com/arabidsquid/status/1876780282344337792]) * Zephyr shells [https://blog.golioth.io/useful-zephyr-shells-for-iot-development/] * You can still buy these on CrowdSupply [https://www.crowdsupply.com/architeuthis-flux/jumperless-v5] * Repos * https://github.com/Architeuthis-Flux/JumperlessV5 [https://github.com/Architeuthis-Flux/JumperlessV5] * https://github.com/Architeuthis-Flux/Jumperless [https://github.com/Architeuthis-Flux/Jumperless] * https://github.com/Architeuthis-Flux/breadWare [https://github.com/Architeuthis-Flux/breadWare] * Follow Kevin online * Bsky [https://web-cdn.bsky.app/profile/architeuthisflux.bsky.social] * Mastodon [https://hackaday.social/@ArchiteuthisFlux] * Discord

[https://theamphour.com/wp-content/uploads/2025/02/688.jpg] * Tracking test equipment on one long homepage…the emporer of test equipment [https://emperoroftestequipment.weebly.com/] * If you track it, it’s not hoarding…it’s curation [https://www.youtube.com/watch?v=XA_04tt9aZQ] * Very specific piece of junk wood [https://www.youtube.com/shorts/7Fw7bZoPyVU] * 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 * [https://theamphour.com/wp-content/uploads/2025/02/OpenSCAD-1024x478.png] * Pebble is returning to the world after Google open sourced the OS (kudos) [https://ericmigi.com/blog/why-were-bringing-pebble-back] * Andrew Witte, former CTO of Pebble, was a guest on the show [https://theamphour.com/175-an-interview-with-andrew-witte-telistic-timepiece-technomania/] * Tandy200 [https://vintagecomputer.com/tandy-200.html] * Annie Lennox on the train with her Tandy (see cover image) * Capacitive forming / reforming * Electric Dreams * Multimeter repair [https://www.youtube.com/watch?v=ETopbGankfo] * Tandy teardown [https://www.youtube.com/watch?v=pD0dVebSZMs]