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    Natural Sciences

    The Amp Hour

    The Amp Hour is a weekly conversation about electronics and the people who design them.

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    Copyright: Copyright © The Amp Hour Electronics Podcast 2020

    • Apple Podcasts
    • Google Play
    • Spotify
    Latest Episodes:
    Moving House (And Lab) Sep 03, 2024
    Show notes
    • Chris has been moving house, which partially explains the terrible audio problems the past few episodes...
    • For a lab, Chris believes in
      • Lots of wire shelving (with epoxy coating)
      • Everything on wheels (including shelving and workbenches)
      • As much storage as you can get
    • Chris has been doing livestreams of hardware design for Golioth.
    • The module he is designing is called the Drachm ("dram")
    • The hardware Chris has been working on for the past 2 years is now open source
    • Flox video with machine learning on a camera also featured Chris
    • Altium finalized their acquisition by Renesas. The price already went up (discussed previously)
    • Raspberry Pi released the RP2350 while we were away
    • Inductor polarity on the RPi Pico 2
    • RP2350 Datasheet
    • You can choose the processors you want (Dual m33, dual RISC V)
    • Microchip was offline due to .... HACKERS
    • Dave has been trying out a new home battery storage system
    • NMC vs LFP
    • Reverse cycle
    • There have been lots of layoffs in tech, including 15K (!) at Intel
    • Layoffs.fyi
    • Being sued for a battery review? Say it aint so
    Changing Course with Shawn Hymel Aug 09, 2024
    Show notes

    Welcome Shawn Hymel!

    • Shawn will be transitioning out Developer Relations at Edge Impulse. He will now be building courses full time. (this was recorded before Shawn announced his departure)
    • He want's to be like a Professor, which partially explains his signature bowtie
    • Should people go into content? What about Developer Relations more specifically?
    • New courses will include FreeCAD and 3D printing and will be published by Digikey
    • Part design in FreeCAD
    • 0.22 in Mango Jelly
    • Learning modeling vs learning an actual program
    • Scoffolding
    • Making a Zephyr course
    • Zephyr / Golioth training
    • Ecosystem vs RTOS
    • Workshop at Harvard
    • Trying to train on hardware
    • What should engineers know about ML
    • Andrew Ng's course on Coursera
    • Updated for NumPy / Python
    • Understand Neural Networks
    • Can treat them as a black box
    • More important to understand statistics and data science
    • Hot dog / not hot dog (silicon valley)
    • Model zoos
    • Hugging Face
    • Coprocessing on U55 - U85
    • ToorCamp
    • Michael Cheich
    • Robert Ferenec
    • Marketing courses
    • Running
    • You can find Shawn as ShawnHymel on most social
      • Twitter
      • LinkedIn
      • Mastodon
      • Bluesky
      • TikTok
      • Instagram
    • You can also check out his site, shawnhymel.com
    Turtles as a Service Jul 25, 2024
    Show notes
    • Murphy
    • More efficient with cooled panels
    • Battery storage solution
    • Server rack batteries
    • Chris has been doing hardware Livestreams
    • Geofence
    • n8n, Similar to Zapier, IFTTT
    • Home assistant
    • EE Grad wants some insight on new tech
    • https://4dsystems.com.au/
    • Scott Williams of Xentronix recorded with Dave and then Chris
    • Saw at Electronex
    • My Cousin Vinny
    • Embedded World North America is happening in Austin in October. There is a vendor map now.
    • Voltnuts
    • Open source book
    • Tiny Tapeout
    • Tantalum Caps from AliExpress
    • What's next for ASML
    • Ben Krasnow printing PCB traces again
    Lifelong Learning with Bitluni Jul 15, 2024
    Show notes

    Welcome, Matthias Balwierz / Bitluni / Luni!

    • Midi pedals
    • Old projects
    • LED walls
    • Dunning kruger
    • Sonar scanner
    • Aliens
    • Romulus
    • Lifelong learning
    • Beamforming
    • Previously had worked on something similar in the medical field but didn't realize it was the same tech
    • ESP32
    • Gowin FPGA
    • Video generation / crt control
    • R2R
    • cnlohr videos for making PCBs
    • ESP32 VGA
    • PCB mill
    • Failing
    • Tiny Tapeout bringing down costs like PCBs
    • Jeri doing "home etching" (making silicon at home)
    • Building the meme project on TT02
    • GIF construction set
    • Almost like a ROM on board, on each clock it exposes the next byte on paralell output
    • Luni hasn't submitted to each tiny tapeout but is building a new project
    • Browser assembler that runs in the handheld gaming: "Luni-Asm"
    • cpu + gpu to get vector output
    • Bitluni live youtube / Bitluni - twitch happens Weds at 8 pm CEST
    • Community helps
    • Writing memory controllers
    • Bus master because internal SRAM is so expensive
    • Expense of flash/ram is in IP
    • People running test structures the tiles
    • FPGAs, Gowin - 9K standard up to 25k
    • Gabriel / Lushay Labs - Tutorials for FPGAs
    • HDMI connector
    • Some IP blocks from Gowin
    • Yosys support
    • VS code tools and simulation
    • Gowin FPGA designer
    • Learning clock domains
    • Moving back to art
    • Demoscene came from the cracker scene
    • Different categories / limits
    • 4K category only allows 4K of memory for images and sound (generated)
    • White demo competitions
    • Contact
      • bitluni
      • github
      • twitch
    Silicon Revolution with Matt Venn Jun 30, 2024
    Show notes

    Welcome back, Matt Venn of the Zero to Asic Course and Tiny Tapeout!

    (Due to illness and some life stuff happening, my recording setup was crap. Apologies. I also leaned heavily on Matt’s notes, so some of the following links will be out of order. Think of it like an ad hoc scavenger hunt…fun!)

    • Matt was last on the show on episode 616, about 18 months ago
    • Tiny Tapeout has continued, now working on it's 8th run. the 5th run is shipping soon.
    • Uri Shaked made Wokwi compatible with making chip designs and then compiling them to verilog for later processing by open source tools
    • 12 bit SAR ADC on TT07
    • linux capable riscv
    • Analog ASIC design with digital standard cells!
    • We had previously posted Matt's review of 2023 and aims for 2024
    • Siliwiz
    • ASIC inside synchrotron
    • Touring IHP (Germany) facilities
    • Interview with Nordic Semi designer
    • People are building analog structures on Tiny Tapeout
    • There's a new course on Zero to Asic that will be about Analog (sign up for the waitlist)
    • There are some new tools being developed
      • surfer - browser based waveform
      • moosic - logic locking plugin for yosys
      • eqy - formal equivalence checking
    • Matt will be doing a TT workshop at supercon 2024
    • TT08 will have a demoscene competition - VGA and sound output - what’s the coolest thing you can fit in 1 tile? You have until Sept 6th 2024 to submit!
    • Not discussed, but on the list and interesting!
      • Silicon Supply Chains with Ed Conway
      • An early analog design (temp sensor) on TT03
      • Get TT quality stickers
    NDA Sideshow Jun 20, 2024
    Show notes
    • Sideshow Bob (simpsons)
    • HERIC Inverter Review
    • Fraunhofer
    • HERIC inverter
    • Dave's video about the CH32V003
    • Charles episode
    • Altium is increasing the price of their product (by 2x??)
    • HITECH compiler from Microchip
    • Newfound Warp13
    • Webrings, Blog roll, StumbleUpon
    • Dontronics amazing site
    Engineering Careers with Circuit Break & James Lewis Jun 14, 2024
    Show notes

    Check out the Circuit Break Podcast for show notes

    • Parker Dillman
    • Stephen Kraig
    • James Lewis
    Freelance PCB Design with Petr Dvorak Jun 07, 2024
    Show notes

    Welcome Petr Dvorak of Beny Devices

    • A to Z book about KiCad
    • fancygit
    • lazygit
    • gitlol
    • Customer types
    • Brno - 30% of electron microscopes
    • What is changing in electron microscopes? Higher voltage, no noise
    • Electrostatic steering
    • Transitioning to freelancing
    • Regulations for freelancer vs employer
    • Petr is a prolific poster of electronics content on his LinkedIn
    • Show your work - Austin Kleon
    • 3 years to get first client
    • 1 month buffer of posts on LinkedIn
    • Building repetitions
    • Outliers / 10000 hours
    • Lists of projects
    • Constraints helping new engineers trying to learn electronics
    • 8x32 pixel displays
    • Petr in Shenzhen
    • Gallup - top strength is learning
    • Personality types
    • Contact
      • Get a free eBook about KiCad on beny-devices.eu
      • Follow Petr on LinkedIn
    50.0000 Ohms May 31, 2024
    Show notes
    • Mistakes in house repair for partners
    • Architectural Lighting
    • Power quality
    • Repairing a $4500 DAC
    • Invisible computers
    • Cal Newport on AI
    • AI shortform
    • USB C Spec
    • Tester
    • "50.0000 ohms"
    • HDMI Layout guide (ADI)
    • Bit Error Rate
    • My voice is my passport
    • Fake Dave
    • Hackers
    • War Games
    • Captain Crunch no longer welcome at DEF CON
    • Wifi (WLAN) Location API
    • Polar Semi gets CHIPS act money
    Long Distance with CNLohr-a May 23, 2024
    Show notes

    Welcome back, CNLohr!

    • CNLohr was on the last episode talking about the CH32V003 part and the CH32V003fun library
    • Charlieplexed errings
    • Fast iteration
    • Lohr-a...LoRa...get it?
    • LoRa
    https://www.youtube.com/watch?v=eIdHBDSQHyw
    • Started in January 2024 with discussions with mustardtiger / Frank
    • Charles had done Wifi long range before
    • Also FM from ATTINY85
    • Ethernet + AM
    • Radio signals without radios
    • USB
    • Harmonics
    • LolRa
    • Upchirps / downchirps
    • 903.825 - 903.975 mhz
    • Michael Ossmann talk
    • LoRa doesn't do code matching
    • JP Norair talking about LoRaWAN / DASH7
    • Tool / emulator for the airwaves
    • 3 lines of the repo
    • Tool to create tables
    • There are two 2 lookup tables (up and downchirps)
    • Table is different for differnet spreading factors and base frequencies
    • Andreas Spiess LoRa/LoRaWAN distance attempts
    • Spreading Factor -- can't past SF10 on this setup for unknown reason
    • AirSpy
    • Matt Knight
    • LoRaWAN -- protocol vs network
    • The Things Network / Helium
    • Activation by personalization
    • Nesting dolls of encryption
    • New parts CH32V002 (also, -005, -006. -007)
    • Charles is excited about the op amp on the CH32V006 that has 64 MHz GBW
    • CH32V203 - 144 MHz - $0.24, has usb xcvr
    • CH32X035 is self clocking - best low cost option for USB
    • All are supported in library now
    • Community - CNLohr discord
    • Porting examples for the parts using the technical reference manual
    • MNIST database - handwriting recognition system
    • Announcement post on CNX about the new parts
    • It's possible to hook up parts directly through the 1 pin SWIO, so you can hot-load firmware
    • Writing code onto a "scratch pad"
    • Want to see more CNLohr experiements online?
      • Youtube.com/cnlohr
      • discord: cnlohr reach out for invite
      • Github
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