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The Great Search: 5V-12V Load Stepper Driver Chip
Manage episode 449768389 series 1242341
Adafruit Industries에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 Adafruit Industries 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.
We had a request to stock more stepper driver boards, and they've got a point: we have a few brushed DC driver boards based on chips like the DRV8833 (https://www.digikey.com/short/z14mb55f) but no dedicated chips like the Trinamic's (https://blog.adafruit.com/2020/06/18/eye-on-npi-tmc2226-sa-ultra-silent-stepper-motor-driver-eyeonnpi-digikey-adafruit-digikey-adafruit-trinamic_mc/). We started a design with the 'classic' A4988 (https://www.digikey.com/short/hfz0ttv5), but it's been many years since that chip was released, let's find another option that has microstepping, and can drive stepper motors at 5V. See the chosen part on DigiKey https://www.digikey.com/short/wzbp7rwp ----------------------------------------- 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/ -----------------------------------------
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4650 에피소드
Manage episode 449768389 series 1242341
Adafruit Industries에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 Adafruit Industries 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.
We had a request to stock more stepper driver boards, and they've got a point: we have a few brushed DC driver boards based on chips like the DRV8833 (https://www.digikey.com/short/z14mb55f) but no dedicated chips like the Trinamic's (https://blog.adafruit.com/2020/06/18/eye-on-npi-tmc2226-sa-ultra-silent-stepper-motor-driver-eyeonnpi-digikey-adafruit-digikey-adafruit-trinamic_mc/). We started a design with the 'classic' A4988 (https://www.digikey.com/short/hfz0ttv5), but it's been many years since that chip was released, let's find another option that has microstepping, and can drive stepper motors at 5V. See the chosen part on DigiKey https://www.digikey.com/short/wzbp7rwp ----------------------------------------- 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/ -----------------------------------------
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4650 에피소드
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×#newproducts JP’s Product Pick of the Week 2/18/25 LPS28 Pressure Sensor https://www.adafruit.com/product/6067 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/ -----------------------------------------…
You can 3D print your own custom add-ons for this coat stand from IKEA. 3D Files: https://learn.adafruit.com/ikea-coat-stand These playful 3D printed add-ons are inspired by an early 20th-century public domain cartoon. We think it's a fun blend of practical and whimsical product design that you can make yourself. The “Alganas” hat and coat stand from IKEA features a simple design that stands up-right and doesn't have to be affixed to the wall. The powder-coated metal hooks are perfect for press fitting 3D printed parts which actually offer additional space for extra items. We designed four add-ons that are inspired by elements from that iconic 20th-century public domain cartoon 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/ -----------------------------------------…
Notes document is available here, with timecodes: https://github.com/adafruit/adafruit-circuitpython-weekly-meeting/blob/main/2025/2025-02-18.md 0:00 Housekeeping 4:01 Community News 8:21 State of CircuitPython, Libraries & Blinka 17:05 Hug Reports 21:01 Status Updates 31:49 In the Weeds 42:10 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/ -----------------------------------------…
Magsafe Charging Bowl By Abstractia Design makerworld.com/en/models/1057579 Bambu X1C Purple Green PLA 7hr 37mins X:120 Y:120 Z:30mm .2mm layer / .4mm Nozzle 6% Infill / 1mm Retraction 200C / 60C 181g 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 -----------------------------------------…
Timon is designing a backpack for the Pi Compute Module, and we're stuffing it full of fun features. We need a lot of clearance for the Pi Compute module so we can put parts underneath. Let's look up the matching connectors for the CM4/CM5, what clearances you'll get, pricing, and the availability from DigiKey. See the chosen part on DigiKey: https://www.digikey.com/short/bhj2r04p ----------------------------------------- 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/…
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1 Desk of Ladyada - I2S DACs, Claude API, and Compute Module Backpack 27:10
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Ladyada explores I2S DACs, testing PCM51xx as a UDA1334A alternative. Work continues on the TLV320DAC3100, we test an AI API interface for setters/getters for Claude with pay per token. A new Pi Compute Module backpack is in progress - And we search for tall connectors for CM4/CM5.
We used to stock a PiCam Module (https://www.adafruit.com/product/5247) that would plug into a Pi CM4 or CM5 - recently we went to restock it, but the vendor hasn't replied to our emails for many months. So, it could be a good time for us to design something that works similarly but with more capabilities. So we tasked Timon (https://github.com/timonsku) with designing something for us - we just said, "Make the best thing ya can," and he delivered! Check this board out that plugs onto the compute module and provides many great accessories: USB connection for bootloading/USB gadget, USB 3.0 host type A for CM5, micro HDMI, micro SD card for data storage on 'Lite modules, camera connection, and mount, two DSI connectors, fan connect, Stemma QT / Qwiic connection, and RTC battery. There's one shutdown button for CM5 and two GPIO buttons plus one LED. Timon's gonna try to add an EYESPI connector for our next rendering so we can get some I2C/SPI/PWM outputs easily. What do you think? We wanted to keep it compact and not too pricey (aiming for under $30 cost. We'll see if we can get it there) but were able to craft fairly complex projects in a small space. 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/ ----------------------------------------- #raspberrypi #camera #tech…
Join Scott as he works on getting CircuitPython working on the Fruit Jam prototype board and answers questions. Visit the Adafruit shop online - http://www.adafruit.com Thanks to dcd for timecodes! 0:00 Getting started 1:40 Welcome everyone 3:00 metro rp2350 4:15 fruit jam priority interrupt 8:20 fruitjam display modes 800x480, 720x400 9:28 more unboxing.. 13:14 display testing - hstx peripheral on rp2350 - 8 bit color 15:30 audio tone test also 17:30 720x400 - from 80x25 text 20:45 desktop code - reset 23:09 HDMI and I2C devices 24:45 Emoji support 26:00 Serenityos.org and fonts 28:17 CP and file grid fonts 29:45 consider support for half and full width characters 30:40 consider coloring text 31:10 Unifoundry.com unifont 36:00 terminal and tile grid changes 37:00 CP Terminal terminalio in github 38:00 CP terminalio pythoh example search ( "/random_backups/" ) 42:14 CP now has the ability to dynamicaly allocate memory 48:24 X11 PCF and BDF fonts ( fontforge.org ) 53:00 investigate lvgl font format 58:00 explore lvgl font converter tool 1:01:44 converted into 1.9Mb unifont.bin file 1:07:45 celeste.py and pico-8 1:22:45 Celeste on the screen! (128x128 screen) 1:23:54 explore rescaling 1:37:27 Celeste live 1:38:44 dive into code.py for optimization 1:47:10 looks better and faster 1:48:49 backup - but first 8 bit 100x180 - and DMA discussion 2:00:32 update the uf2 and download - and try 180x100 2:04:01 wrapup ----------------------------------------- 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/ -----------------------------------------…
#circuitpythonparsec Create a character font module for your LED Matrix Display https://github.com/jedgarpark/parsec/blob/main/2025-02-13/code.py https://github.com/jedgarpark/parsec/blob/main/2025-02-13/matrix_chars.py https://www.adafruit.com/product/902 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/ -----------------------------------------…
We're starting to stock a lot of chips that can do digital I2S out, which makes for great-quality audio playback. That's great when you have enough processing power to decode WAVs or MP3s in real-time. However, we could really use some better DACs in the shop. We like the UDA1334A (https://www.adafruit.com/product/3678), but that's technically discontinued - it's great because it doesn't require an MCLK that some boards like the Raspberry Pi don't have and doesn't need I2C configuration either. The PCM510x is a good family, too; it ranges from the inexpensive PCM5100 (https://www.digikey.com/short/z50cnp0h) to the PCM5102 (https://www.digikey.com/short/80z2nh3h) which has high quality output at a higher cost. This breakout could use any of the family chips & gives you all the GPIO needed with a 3.5mm headphone jack for line-level output. We're testing it out with some cool tunes from the adafruit soundcloud, check it out! (https://soundcloud.com/adafruit). 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/ ----------------------------------------- #tech #technews #music…
JOHN PARK'S WORKSHOP LIVE 2/13/25 Shield Case 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/ -----------------------------------------…
Adafruit Fruit Jam - Mini RP2350 Computer (0:12) https://www.adafruit.com/product/6200 The Official Raspberry Pi Beginner's Guide 5th Ed (1:39) https://www.adafruit.com/product/6242 Adafruit FPC Breakout for Raspberry Pi 5 DSI or RP2350 HSTX - 22 Pin 0.5mm (2:22) https://www.adafruit.com/product/6014 DAC7578 - 8 x Channel 12-bit I2C DAC - STEMMA QT / Qwiic (2:52) https://www.adafruit.com/product/6223 Adafruit Metro RP2350 (3:47) https://www.adafruit.com/product/6003 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 neither-here-nor-there - it's STMicroelectronics' ST25R200 NFC/HF RFID Reader IC (https://www.digikey.com/en/product-highlight/s/stmicroelectronics/st25r200-nfc-hf-rfid-reader-ic) a simple but powerful NFC/RFID reader and writer chip that will let you add a contactless interface to your next design. Thanks to the high power RF stage and dual antenna support, you can avoid the frustration of "where do I tap??" by giving you plenty of surface area for successful transactions. We're big fans of intuitive RFID/NFC interfaces using tags, they come in all sorts of sizes and shapes (https://www.adafruit.com/product/365) from standard business cards to microtags that can fit in a manicure (https://www.adafruit.com/product/2800). They don't require a battery, and can store up to a few KB of data, including encrypted/secured data sections so as to make the tag 'trustworthy'. They're often used for small-money transactions like copy shops, laundromats and public transport, where speed is important and we can store value on the card. Or for identification like access cards. With proper design, they'll work up to 4 inches away from a reader, don't suffer from corrosion or contact wear or affected by water/humidity. Reading and writing RFID/NFC tags, which use 13.56MHz as a carrier frequency, requires a proper chip that can handle the requirements of blasting enough RF signal to 'power' the tag, then transmit a command and receive the response before the quiescent power runs out. If you have a big antenna, this isn't too hard - but the real challenge is to manage it with a small antenna. That's the nice thing about the ST25R200 (https://www.digikey.com/short/5ttf9ptj) - it has powerful output drivers so even mini wearable-sized antennas work well. You can configure the outputs to be one differential or two single-ended antenna coils. If you want to design your PCB antenna, we recommend ST's website for NFC inductance calculations (https://eds.st.com/antenna/#/) it will let you determine the inductance based on width, height, copper thickness and trace width so you get maximum power transfer. The ST25R200's connection to the controller is over standard 4-pin SPI, so you can use any microcontroller or microcomputer with 4 pins available. An IRQ line is also handy to 'wake on card detect'. Other than that, the interface is fairly low level: registers are used to configure the RF section and encoding but otherwise, data is transmitted or received via two FIFO buffers. This makes the chip easy to adapt to the various sub-protocols and standards (https://nfc-forum.org/build/specifications) designed by competing RFID companies: ISFO14443A/NFC-A, ISO14443B/NFC-B, ISO15693/NFC-V, NFC Forum T1T, T2T, T4T, and T5T tag types, and proprietary protocols, such as Kovio, CTS, and B’. In order to make your life easier when it comes to implementation, ST has released RFAL an RF/NFC abstraction layer (https://www.st.com/en/embedded-software/stsw-st25rfal004.html) that is written in pure C so that it can be ported to any platform or compiler. To get started quickly we recommend the STEVAL-25R200SA evaluation board (https://www.digikey.com/en/products/detail/stmicroelectronics/STEVAL-25R200SA/25701817) which comes with a USB debug STLink interface, SMTable module, 4 pluggable antenna options including one flex PCB printed antenna, and two micro-tags for testing. If you want to integrate RFID/NFC 'touchless' support to your next design, the ST ST25R200 NFC/HF RFID Reader IC (https://www.digikey.com/short/5ttf9ptj) is small, inexpensive, and fast to get started with minimal external components, and ready-to-go drivers. And best of all the chips are in stock right now at DigiKey for immediate shipment. Order the ST25R200 (https://www.digikey.com/short/5ttf9ptj) and an eval board today and you can tap your way to contactless communication by tomorrow afternoon!…
The hush-hush news from Adafruit in Industry City, Brooklyn, New York. Broadcast February 12, 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/…
The wonderful world of Python on hardware! Episode 304 (February 12, 2025). This is our weekly Python video highlights! Ladyada and PT review the Python on hardware news of the week. The news comes from the Python community, Discord, Adafruit communities and more. It’s part of the comprehensive newsletter we do each week. The video playlist of episodes is here: http://adafru.it/pohepisodes *************************************************** Sign up for the Python on Microcontrollers weekly email newsletter here: https://www.adafruitdaily.com/ *************************************************** Read the newsletters past and present at https://www.adafruitdaily.com/category/circuitpython/ Learn all about CircuitPython here: https://www.circuitpython.org/ https://adafruit.com/circuitpython/ --------------------------------------------------------------- Join us on Discord! https://adafru.it/discord/ Visit the Adafruit shop online - http://www.adafruit.com Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe…
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