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Deep Dive w/Scott: CircuitPython debugging
Manage episode 479342430 series 1242341
محتوای ارائه شده توسط Adafruit Industries. تمام محتوای پادکست شامل قسمتها، گرافیکها و توضیحات پادکست مستقیماً توسط Adafruit Industries یا شریک پلتفرم پادکست آنها آپلود و ارائه میشوند. اگر فکر میکنید شخصی بدون اجازه شما از اثر دارای حق نسخهبرداری شما استفاده میکند، میتوانید روندی که در اینجا شرح داده شده است را دنبال کنید.https://fa.player.fm/legal
Join Scott for his last deep dive before more paternity leave. He'll be debugging CircuitPython code. Not sure what. He'll also answer any questions people ask and provide an update on the garbage collection improvements. Visit the Adafruit shop online - http://www.adafruit.com 0:00 Getting started 1:14 Hello everyone - welcome to Deep Dive w/Scott 1:37 Circuit Python - runs on Adafruit Metro RP2350 and many other microprocessors 2:43 Scott's last Deep Dive for the year - then Dad mode and part time 4:00 question about databases on CP - BTree and SQLite 6:43 New 16 inch Framework Laptop ( upgraded from 13 inch ) 9:00 Garbage Collection last week 10:30 Met with MicroPython developers on Tuesday 11:35 Adjusting GC stack speed things up 13:24 working on USB PR commit #10821 16:57 CI scheduler overview 19:07 Shrinking USB static buffers to get the CI to run again 23:10 Merge the "fix" into gc_selective_collect 25:05 test mimxrt10xx port 28:59 looking at linker scripts for sizes 38:00 checking the esp-idf template memory.ld.in 42:00 found "Internal SRAM0 and SRAM1" in datasheet 45:49 back to PR 10293 51:00 investigate second stage boot loader 54:30 linker scripts "digression" 1:09:00 switch to the Fruit Jam 1:13:30 Fruit Jam booted 1:17:39 debug the startup crash 1:25:30 audio playback buffers 1:33:00 examine rp2350 Datasheet DMA and continue to debug DMA 1:50:22 maybe console uart running background task triggers issue 1:52:43 audio_dma_stop called twice? 1:58:27 any final questions? adfru.it/discord 2:04:00 wrap up - thanks to Tim for future deep dives ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------
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4956 قسمت
Manage episode 479342430 series 1242341
محتوای ارائه شده توسط Adafruit Industries. تمام محتوای پادکست شامل قسمتها، گرافیکها و توضیحات پادکست مستقیماً توسط Adafruit Industries یا شریک پلتفرم پادکست آنها آپلود و ارائه میشوند. اگر فکر میکنید شخصی بدون اجازه شما از اثر دارای حق نسخهبرداری شما استفاده میکند، میتوانید روندی که در اینجا شرح داده شده است را دنبال کنید.https://fa.player.fm/legal
Join Scott for his last deep dive before more paternity leave. He'll be debugging CircuitPython code. Not sure what. He'll also answer any questions people ask and provide an update on the garbage collection improvements. Visit the Adafruit shop online - http://www.adafruit.com 0:00 Getting started 1:14 Hello everyone - welcome to Deep Dive w/Scott 1:37 Circuit Python - runs on Adafruit Metro RP2350 and many other microprocessors 2:43 Scott's last Deep Dive for the year - then Dad mode and part time 4:00 question about databases on CP - BTree and SQLite 6:43 New 16 inch Framework Laptop ( upgraded from 13 inch ) 9:00 Garbage Collection last week 10:30 Met with MicroPython developers on Tuesday 11:35 Adjusting GC stack speed things up 13:24 working on USB PR commit #10821 16:57 CI scheduler overview 19:07 Shrinking USB static buffers to get the CI to run again 23:10 Merge the "fix" into gc_selective_collect 25:05 test mimxrt10xx port 28:59 looking at linker scripts for sizes 38:00 checking the esp-idf template memory.ld.in 42:00 found "Internal SRAM0 and SRAM1" in datasheet 45:49 back to PR 10293 51:00 investigate second stage boot loader 54:30 linker scripts "digression" 1:09:00 switch to the Fruit Jam 1:13:30 Fruit Jam booted 1:17:39 debug the startup crash 1:25:30 audio playback buffers 1:33:00 examine rp2350 Datasheet DMA and continue to debug DMA 1:50:22 maybe console uart running background task triggers issue 1:52:43 audio_dma_stop called twice? 1:58:27 any final questions? adfru.it/discord 2:04:00 wrap up - thanks to Tim for future deep dives ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------
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×#newproducts JP’s Product Pick of the Week 6/3/25 Feather nRF52840 https://www.adafruit.com/product/4062 Deep discount during livestream Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…
Every week we'll 3D print designs from the community and showcase slicer settings, use cases and of course, Time-lapses! This Week: Iris Fidget By louisdesigns https://makerworld.com/en/models/1472499-iris-fidget-print-in-place-3d-fidget Bambu X1C Orange Green Glow PLA 3hr 20mins X:49 Y:49 Z:28mm .2mm layer / .4mm Nozzle 6% Infill / 1mm Retraction 200C / 60C 23g 230mm/s ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Shop for parts to build your own DIY projects http://adafru.it/3dprinting 3D Printing Projects Playlist: https://www.youtube.com/playlist?list=PLjF7R1fz_OOWD2dJNRIN46uhMCWvNOlbG 3D Hangout Show Playlist: https://www.youtube.com/playlist?list=PLjF7R1fz_OOVgpmWevin2slopw_A3-A8Y Layer by Layer CAD Tutorials Playlist: https://www.youtube.com/playlist?list=PLjF7R1fz_OOVsMp6nKnpjsXSQ45nxfORb Timelapse Tuesday Playlist: https://www.youtube.com/playlist?list=PLjF7R1fz_OOVagy3CktXsAAs4b153xpp_ Connect with Noe and Pedro on Social Media: Noe's Twitter / Instagram: @ecken Pedro's Twitter / Instagram: @videopixil ----------------------------------------- Visit the Adafruit shop online - http://www.adafruit.com/?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting Subscribe to Adafruit on YouTube: http://adafru.it/subscribe Adafruit Monthly Deals & FREE Specials https://www.adafruit.com/free?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting Join our weekly Show & Tell on G+ Hangouts On Air: http://adafru.it/showtell Watch our latest project videos: http://adafru.it/latest?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting 3DThursday Posts: https://blog.adafruit.com/category/3d-printing?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting New tutorials on the Adafruit Learning System: http://learn.adafruit.com/?utm_source=youtube&utm_medium=videodescrip&utm_campaign=3dprinting Music by Dan Q https://soundcloud.com/adafruit -----------------------------------------…
Notes document is available here, with timecodes: https://github.com/adafruit/adafruit-circuitpython-weekly-meeting/blob/main/2025/2025-06-02.md 0:00 Housekeeping 01:41 Community News 03:21 State of CircuitPython, Libraries & Blinka 10:27 Hug Reports 12:24 Status Updates 18:26 In the Weeds 22:25 Wrap-up Join here for the chat all week: http://adafru.it/discord The CircuitPython Weekly normally is held at 2pm US ET/11am us PT on Mondays. Check the #circuitpython-dev channel on Discord for notices of change in time and links to past meetings. Meeting times are also available in iCal format using the following link: https://raw.githubusercontent.com/adafruit/adafruit-circuitpython-weekly-meeting/master/meeting.ical or view it in your browser: https://open-web-calendar.herokuapp.com/calendar.html?url=https://raw.githubusercontent.com/adafruit/adafruit-circuitpython-weekly-meeting/master/meeting.ical CircuitPython development is sponsored by Adafruit. Please support them by purchasing hardware from https://adafruit.com. Reminders: Podcast available on most services. Let us know if we’re missing some. Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…
We recently got a request to make LED sequins with bright UV LEDs for costuming projects using UV-reactive paints and textiles. Also known as 'blacklight' paint or fabric, these dyes glow fluorescent when exposed to UV light. 🔗 https://www.digikey.com/short/bndtdnbr 🔗 https://www.adafruit.com/search?q=led+sequin 🔗 https://en.wikipedia.org/wiki/Ultraviolet However, not all UV LEDs will work! UV ranges from 100nm to 450nm, and some frequencies are used for curing or disinfection. For light effects, 365nm is the 'peak' frequency to look for. Let’s find a ~365nm SMT UV LED we can pick and place onto a small PCB for easy sewing. ✨🧵 ----------------------------------------- Visit the Adafruit shop online - http://www.adafruit.com LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ ----------------------------------------- #ElectronicsDesign #UVLED #TheGreatSearch…
We are Boosting nOOds, testing chargers, and hunting UV LEDs! Wrapping up new designs & exploring UV LEDs for costuming for blacklight flair.
#circuitpythonparsec How to read button sequences for user combination entry. https://github.com/jedgarpark/parsec/blob/main/2025-05-29/code.py https://www.adafruit.com/product/5691 Learn about CircuitPython: https://circuitpython.org Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…

1 John Park's Workshop Live 5/29/25 1:09:10
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John Park's Workshop Live 5/29/25 Emulation RP2350 PicoNES CircuitPython Parsec JPPPoW recap Projects and more! Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…

1 #NewProducts 5/28/25 Feat. @Adafruit INA237 16-bit DC Current Voltage Power Monitor -STEMMA QT 5:33
Posable Wooden Mannequin - 20cm (0:07) https://www.adafruit.com/product/6330 Aluminum Metal Heatsink Raspberry Pi 5 Case with Fan (0:54) https://www.adafruit.com/product/6277 Mini Sparkle Motion with Pre-soldered Terminal Block - ESP32 NeoPixel LED Driver (2:08) https://www.adafruit.com/product/6314 Adafruit INA237 85V 10A 16-bit DC Current Voltage Power Monitor - STEMMA QT (3:28) https://www.adafruit.com/product/6340 Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- New nEw NEWs New Products, News, and more: https://www.adafruit.com/newsletter #newnewnew Shop for all of the newest Adafruit products: http://adafru.it/new Visit the Adafruit shop online - http://www.adafruit.com Adafruit on Instagram: https://www.instagram.com/adafruit LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…
This week's EYE ON NPI is another onsemi device - this week we're looking at the NIV3071 4-Channel eFuse Solution (https://www.digikey.com/en/product-highlight/o/on-semi/niv3071-4-channel-efuse-solution) a power distribution manager that can lets you manage a product with a lot of power domains and supplies using just a couple GPIO pins. This week's product is an upgrade from the covered-earlier NIS5420 (https://blog.adafruit.com/2021/09/09/eye-on-npi-onsemi-efuse-porfolio-eyeonnpi-digikey-onsemi-digikey-adafruit/) - with a higher 8~60V input range, and 4 independently-controlled channels. When people first meet fuses, they usually see and think of classic 'wire' fuses (https://www.digikey.com/en/products/detail/bel-fuse-inc/5ST-200-R/1009012) with ceramic or glass or thermoplastic bodies, and a thin wire inside. When too much current goes through the fuse wire, it gets hotter and hotter and eventually melts, cutting off the load from the source voltage. These kinds of fuses are super cheap, very-very-low resistance, easy to find at any hardware store, and there's lots of suppliers with various current limits. However, they're one-shot usage only and only good for over-current, can't act as switches/sequencers. You need to have a way for customers to access the fuse in order to replace it. For those reasons, a lot of engineers prefer going with 'poly fuses' - fuses that are easy to mount into a circuit that auto-reset after a time (usually minutes) so that a temporary overload doesn't make the device a brick so quickly. For example, we have a chunky 24V 5A hold / 10 A trip polyfuse (https://www.digikey.com/en/products/detail/littelfuse-inc/2016L260-24MR/6347052) on the Sparkle Motion board design (https://www.adafruit.com/product/6100), designed to protect folks who accidentally have a short in the output LED strings, and want to avoid damaging the power supply or main board. Poly-fuses are a great step-up from plain wire fuses: they're fairly inexpensive, available from lots of suppliers with various current limits, and best of all the fuse auto-resets after cooling down. However, like wire fuses, they're good for over-current, can't be reset, and have some variation depending on ambient temperature: you may trip 50% higher if its cold, or lower if its hot. Thus the next generation of fuses: eFuses (https://www.digikey.com/en/product-highlight/o/on-semi/efuse-automotive-circuit-protection)! As you could imagine, these are pure-silicon fuses, with a chunky N-FET that acts as the cut-off switch, and current limiting managed as an analog feedback loop that will cut the FET when too high. We get the resetability of a polyfuse, with additional control like sequence-able enable pins and under-voltage lockout. Note that some eFuses also can do over-voltage clamps and negative voltage protection, but the NIV3071 (https://www.digikey.com/short/3v0thr1p) doesn't contain these protections, so you may want to implement those protections separately. Especially designed for automotive power systems, which tend to be 12V/24V/36V/48V multiples, the NIV3071 (https://www.digikey.com/short/3v0thr1p) is AEC−Q100 qualified and PPAP capable (https://www.onsemi.com/pub/collateral/tnd6284-d.pdf). The use of eFuses is becoming popular as cars have become more computerized and electrified, with each 'zone' in a car (https://www.onsemi.com/solutions/automotive/zonal-architecture) - such as entertainment, communication, lighting, charging and sensors - all needing separate power management. If you don't need automotive qualifications, the functionally-compatible NIS3071 (https://www.digikey.com/short/9v2dmvhf) is a couple of cents cheaper. This family of eFuses is good for up to 60V and 2.5A per channel, but if you need more per channel you can just double or triple them up to add 2.5A per. If you want less per channel, to protect low-power devices from overheating or accidental shorts, the current limit can be reduced with an external resistor. And of course, you can turn on/off each channel with a GPIO enable pin: great for sequencing your power chain to reduce stress on the power supply from inrush current, or to allow each section to stabilize and go through self-test. For your next power supply design, the onsemi NIV3071 (https://www.digikey.com/short/3v0thr1p) and NIS3071 (https://www.digikey.com/short/9v2dmvhf) offer high-voltage, high-current control in a small package and a great price. Both are in stock right now at DigiKey for immediate shipment, so you can book today and start integration by tomorrow afternoon.…
The hush-hush news from Adafruit in Industry City, Brooklyn, New York. Broadcast May 28, 2025 These are items or concept products that may/might/could be introduced into the Adafruit store in the future (or not)! It's not out yet, so please don't ask questions or ask when it'll be available.... Check out the Adafruit store for all the great products that are available and for coming soon products you can sign up to be notified when they are in stock. https://www.adafruit.com/new Visit the Adafruit shop online - http://www.adafruit.com Also visit DigiKey for Adafruit products at http://www.digikey.com/ ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/…
ASK AN ENGINEER 5/28/2025 LIVE From the Desk of Ladyada@05:05 JP's Product Pick of the Week@08:54 Open Source Hardware @15:02 3D Printing @17:30 Eye on NPI @21:30 New Products @30:50 Top Secret @37:19 Questions @42:29 Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…
SHOW and TELL 5/28/2025 Trevor @01:52 update on The Great Search and celebrating Trevor! Jayy @06:05 Comet Crawler v2 Maker Melissa @08:58 Match3-type game Liz @11:30 robot xylophone with Metro RP2350 john park @14:49 NES emulator running on Metro RP2350 with DVI video Tim (foamyguy) @20:40 OPT 4048 driver for CircuitPython Erin St. Blaine @23:50 birthday frown with LED number filaments Cooper (@relic_se) @24:50 cute little webcam made with OV5640 Camera Breakout Boian Mitov @27:15 Visuino update!…
This week @adafruit we’re taking a look at our USB chording keyset project. Prototyping a new alarm clocking using QTPy ESP32 and LED matrices. Shop talk features 12V batteries and camera slider updates. Catching up on community makes and the time-lapse this week features a print-in-place basketball hoop designed by PrintChallenge on MakerWorld. USB Keyset Learn Guide https://learn.adafruit.com/usb-keyset/ QTPy RP2040 https://www.adafruit.com/product/4900 CHOC Key Switches https://www.adafruit.com/product/5114 USB C Cable https://www.adafruit.com/product/6278 12V Rechargeable Battery Pack https://www.amazon.com/dp/B0D9XCJVBB 6809-2RS Ultra Thin Ball Bearing https://www.amazon.com/dp/B088B9K3NH Rapid Render: BNB Icons https://bnbicons.com/ Timelapse Tuesday Flexy Basketball Hoop By printchallenge https://makerworld.com/en/models/1055971-flexible-basketball-hoop-with-ball https://youtu.be/g7DJwQiEDGA Community Makes https://www.printables.com/make/2639960?comment_id=2639960 https://www.printables.com/make/2634662?comment_id=2634662 https://www.printables.com/make/2582608?comment_id=2582608 https://www.printables.com/make/2600373?comment_id=2600373 🎙️ New to streaming or looking to level up? Check out StreamYard and get $10 discount! 😍 https://streamyard.com/pal/d/5925163669389312…
#newproducts JP’s Product Pick of the Week 5/27/25 USB Type C CC Resistor Fixer for PD supplies https://www.adafruit.com/product/6323 Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…
#newproducts JP’s Product Pick of the Week 5/27/25 USB Type C CC Resistor Fixer https://www.adafruit.com/product/6323 Deep discount during livestream Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------…
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