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MakerSpaceUpgrade your computer with LEDs, buttons, or sensors to control a microcontroller board over USB from your web browser <a href="https://www.makerspace-online.com/controlling-microcontrollers-over-usb-with-the-web-serial-api/?utm_source=mms" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.makerspace-online.com/controlling-microcontrollers-over-usb-with-the-web-serial-api/?utm_source=mms</a> <a href="https://mastodon.social/tags/microcontroller" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#microcontroller</a> <a href="https://mastodon.social/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a> <a href="https://mastodon.social/tags/RaspberryPiPico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RaspberryPiPico</a> <a href="https://mastodon.social/tags/ESP32" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESP32</a> <a href="https://mastodon.social/tags/USB" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#USB</a> <a href="https://mastodon.social/tags/API" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#API</a> <a href="https://mastodon.social/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a>

Liz [BlitzCityDIY]My desk is incredibly messy but! here’s some sweet, dithered <a href="https://mastodon.social/tags/circuitpythonday2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitpythonday2025</a> graphics on a 7.5” eink display with a Feather ThinkInk running <a href="https://mastodon.social/tags/circuitpython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitpython</a>

Liz [BlitzCityDIY]Today is <a href="https://mastodon.social/tags/CircuitPythonDay2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPythonDay2025</a> 🐍 over on the <a href="https://fosstodon.org/@adafruit" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@adafruit</a> socials we have a bunch of videos and livestreams. Check out this playlist so that you don’t miss anything: <a href="https://youtube.com/playlist?list=PLjF7R1fz_OOVoxNn38WR-p-Dv6bksiJg3&feature=shared" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtube.com/playlist?list=PLjF7R1fz_OOVoxNn38WR-p-Dv6bksiJg3&feature=shared</a> <a href="https://mastodon.social/tags/circuitpython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitpython</a>

Mike Coats 🏴󠁧󠁢󠁳󠁣󠁴󠁿🇪🇺🌍♻️My latest blog post: Installing CircuitPython on a Freenove ESP32-S3-WROOM CAM Board <a href="https://mikecoats.com/circuitpython-on-freenove-esp32/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://mikecoats.com/circuitpython-on-freenove-esp32/</a>In celebration of CircuitPython Day 2025, here's how I installed CircuitPython on one of my favourite, but unsupported, boards, the Freenove ESP32-S3-WROOM CAM Board.<a href="https://mikecoats.social/tags/circuitPythonDay2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitPythonDay2025</a> <a href="https://mikecoats.social/tags/circuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitPython</a> <a href="https://mikecoats.social/tags/embedded" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#embedded</a> <a href="https://mikecoats.social/tags/esp32" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#esp32</a> <a href="https://mikecoats.social/tags/espressif" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#espressif</a> <a href="https://mikecoats.social/tags/freenove" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#freenove</a> <a href="https://mikecoats.social/tags/python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#python</a>

Tod Kurt (todbot)Very excited that Paul & I as <a href="https://www.circuitpythonshow.com/@thebootloader" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@thebootloader</a> get to be a part of <a href="https://mastodon.social/tags/CircuitPythonDay2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPythonDay2025</a> tomorrow! We’ll be showing some fun projects w/ the Fruit Jam tiny computer, showing cool <a href="https://mastodon.social/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> demos, and talking about techniques to develop CirPy projects faster. Tomorrow Friday @ 1p PT / 4p ET! <a href="https://mastodon.social/@blitzcitydiy/115015652023096785" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://mastodon.social/@blitzcitydiy/115015652023096785</a>

Liz [BlitzCityDIY]this friday is <a href="https://mastodon.social/tags/CircuitPythonDay2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPythonDay2025</a> - we've got a lot of fun videos and livestreams planned at <a href="https://mastodon.cloud/@adafruit" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@adafruit</a> that will be airing all day. check out this blog post for the schedule: <a href="https://blog.adafruit.com/2025/08/11/circuitpython-day-is-august-15-2025-2/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://blog.adafruit.com/2025/08/11/circuitpython-day-is-august-15-2025-2/</a> <a href="https://mastodon.social/tags/circuitpython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitpython</a>

gallaugherStill working on the <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> Display of Displays for the MakerSpace. LEDS, OLEDS, TFTs, touch screens, elnk, NeoPixel and HUB75 matrices, EYE SPl, lots of sizes, and even a cowbell camera. Now to figure out how to mount it. <a href="https://bsky.app/profile/gallaugher.bsky.social/post/3lvm5f5xrvk2w" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://bsky.app/profile/gallaugher.bsky.social/post/3lvm5f5xrvk2w</a>

gallaugherLots of folks who don't code much have been taking about "AI Replacing Software Engineers". Here is my real experience with state-of-the-market paid tiers, as well as my experience in <a href="https://mastodon.world/tags/CSed" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CSed</a> with AI in both my <a href="https://mastodon.world/tags/SwiftUI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SwiftUI</a> and <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> courses. <a href="https://www.linkedin.com/pulse/some-personal-experiences-using-ai-programming-tool-john-gallaugher-8dyoe" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.linkedin.com/pulse/some-personal-experiences-using-ai-programming-tool-john-gallaugher-8dyoe</a>

Paul CutlerAnd with a little text manipulation it's now working on 2 LED matrices. (The one on the left has an acrylic diffuser, makes a big difference, even if I cut it poorly).Now it tells me what song I have on in the background using a Pi with a mic and an S3 MatrixPortal running <a href="https://hachyderm.io/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a>.

CircuitPython<a href="https://fosstodon.org/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> 10.0.0-beta.2 released! <a href="https://blog.adafruit.com/2025/07/30/circuitpython-10-0-0-beta-2-released/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://blog.adafruit.com/2025/07/30/circuitpython-10-0-0-beta-2-released/</a> Highlights of this release: - Support quad-color e-paper displays. - Support MagTag 2025 Edition display. - Use full Mozilla SSL root certificate list for all -network-capable boards.

gallaugherBetter link to current status of the <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> Sonic Pillars build with Raspberry Pi Picos, VL53L1X ToF sensors & PCM5102 DACs <a href="https://youtube.com/shorts/piE7KWWLi6Q?feature=share" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtube.com/shorts/piE7KWWLi6Q?feature=share</a>

gallaugherLatest prototype of the <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> Sonic Pillars. Three now have bases. The front box can be flipped up so one can move hands vertically instead of distance from pillars, as demonstrated. More to come. <a href="https://bsky.app/profile/gallaugher.bsky.social/post/3lv5kzvlqik2f" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://bsky.app/profile/gallaugher.bsky.social/post/3lv5kzvlqik2f</a>

gallaugherNew lesson: How to use an ili9341 TFT display with a Raspberry Pi Pico & <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> Configuration code, demo code, and more:. Bought a bunch of these displays to use for Fall's class. Enjoy! <a href="https://youtu.be/2UDoitOSZXU" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/2UDoitOSZXU</a>

diyelectromusicPico Touch Board Audio <a href="https://makertube.net/w/tADSyrPrUdR1mx7yKRXZTC" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://makertube.net/w/tADSyrPrUdR1mx7yKRXZTC</a>

Simple DIY Electronic Music ProjectsPico Touch Board AudioI wanted to go back to my <a href="https://diyelectromusic.com/2025/03/02/pico-touch-board-pcb-design/" rel="nofollow noopener noreferrer" target="_blank">Pico Touch Board PCB Design</a> and see if there was a way to make it more stand-alone. The original design was to make it a MIDI controller, but that isn’t the only option.<a href="https://makertube.net/w/tADSyrPrUdR1mx7yKRXZTC" rel="nofollow noopener noreferrer" target="_blank">https://makertube.net/w/tADSyrPrUdR1mx7yKRXZTC</a>Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments!These are the key Arduino tutorials for the main concepts used in this project:<ul><li><a href="https://diyelectromusic.com/2025/03/02/pico-touch-board-pcb-design/" rel="nofollow noopener noreferrer" target="_blank">Pico Touch Board PCB Design</a></li><li><a href="https://diyelectromusic.com/2021/07/11/arduino-pwm-output-filter-circuit/" rel="nofollow noopener noreferrer" target="_blank">Arduino PWM Output Filter Circuit</a></li></ul>If you are new to microcontrollers, see the <a href="https://diyelectromusic.wordpress.com/getting-started/" rel="nofollow noopener noreferrer" target="_blank">Getting Started</a> pages.Parts list<ul><li><a href="https://diyelectromusic.com/2025/03/02/pico-touch-board-pcb-build-guide/" rel="nofollow noopener noreferrer" target="_blank">Pico Touch Board PCB</a> – built</li><li>Resistors: 1x 220Ω, 1x 1K</li><li>Capacitor: 1x 100nF ceramic, 1x 22uF electrolytic</li><li>Breadboard and jumper wires</li></ul>The CircuitMost of the GPIO are linked out to the touch pads, but the three analog inputs are still available. They are added on to the header on the right hand side of the board at the top, so we can use one of these as an audio output.Initially, I thought of connecting it to an 8Ω speaker. If I was using an Arduino then I’d use a 220Ω resistor in series to limit the current to less than 20mA. But as I’m using a Pico, the maximum current has to be a lot less. I seem to recall it is a little complicated, and there are some options, but I have a figure of around 4mA that I tend to work to. It is also running at 3.3V, which means that it would need an in series resistor of 3.3 / 0.004 = 825Ω. This would work, but the speaker will be really quiet!So I ditched that idea (there is a software reason too, but I’ll talk about that in a moment) and went straight to a PWM output with a low-pass filter to try to give me some vaguely useful as a line-out signal.I’ve not done the calculations, but instead went a bit “hand-wavy”, combing a 1K and 220Ω resistor to drop the voltage, along with a 100nF capacitor. I’ve also added a 22uF capacitor to remove the DC bias.That seems to give me something useful, but as you can see from the trace below of a square wave PWM output, there is a lot of room for improvement!The CodeI wanted to stick with Circuitpython, so my initial thought was to use simpleio.tone() to generate a tone based on a frequency from an IO pin. However, this has the problem that the code is blocking whilst the tone is playing which isn’t very useful.Instead I went straight to synthio. It turns out that using synthio was actually a lot easier than the “simple” simpleio…Here is the basic code to generate an ASR-shaped square wave on a PWM audio output on GPIO 28 based on the touch pads as input.<pre>import board import touchio import synthio import audiopwmio from adafruit_debouncer import Debouncer, Button audio = audiopwmio.PWMAudioOut(board.GP28) synth = synthio.Synthesizer(sample_rate=22050) audio.play(synth) synth.envelope = synthio.Envelope(attack_time=0.1, release_time=0.6, sustain_level=1.0) touchpins = [ board.GP2, board.GP3, board.GP4, board.GP5, board.GP6, board.GP7, board.GP8, board.GP9, board.GP10, board.GP11, board.GP12, board.GP13, board.GP14, board.GP15, board.GP16, board.GP17, board.GP18, board.GP19, board.GP20, board.GP21, board.GP22 ] THRESHOLD = 1000 touchpads = [] for pin in touchpins: t = touchio.TouchIn(pin) t.threshold = t.raw_value + THRESHOLD touchpads.append(Button(t, value_when_pressed=True)) while True: for i in range (len(touchpads)): t = touchpads[i] t.update() if t.rose: synth.press(60+i) if t.fell: synth.release(60+i)</pre>Battery PowerOne last thing I wanted to explore was if it was possible to power the touchboard with batteries. I left in a number of power options, so for this one I’m using the 5V/GND pin header. I’ve included a couple of capacitors for smoothing, and need to add the 1N5817 diode as shown below.This requires the following additional components:<ul><li>1x 1N5817 Schottky diode.</li><li>1x 100nF ceramic capacitor.</li><li>1x 47uF electrolytic capacitor.</li><li>Jumper wires.</li><li>3 or 4 battery box.</li></ul>The 5V/GND header pins connect to the Raspberry Pi Pico’s VSYS pin via the Schottky diode. The 1N5817 has a typical voltage drop of 0.45V, so combined with the Raspberry Pi’s accepted input voltage of 1.8V to 5.5V this means that ideally two or three AA batteries (at 1.5V each) would work. Four 1.2V rechargeables might be an option too.It might be possible to get away with four 1.5V AAs, but that would give an input voltage of just over 5.5V, so I think that is probably pushing things too far. It might be a good use for some spent AAs though that are no longer reading a full 1.5V…One of the downsides of battery power is that the touch works best when your fingers are at the same GND potential as the board. It works best if the GND pin of the (unpopulated) barrel jack is touched when using the board.Closing ThoughtsWith hindsight it would have been useful to have included a simple PWM output stage on the original board, but it is relatively straight forward to add one.It might even be worth me making an add-on board that will connect to the header pins of the power and analog pins containing the simple passive filter components.What is pretty impressive though, is how easy it is to use synthio with Circuitpython.Kevin<a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://diyelectromusic.com/tag/circuitpython/" target="_blank">#circuitpython</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://diyelectromusic.com/tag/pwm/" target="_blank">#pwm</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://diyelectromusic.com/tag/raspberry-pi-pico/" target="_blank">#raspberryPiPico</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://diyelectromusic.com/tag/synthio/" target="_blank">#synthio</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://diyelectromusic.com/tag/touch/" target="_blank">#touch</a>

TekktrikSurprise! I'm giving a lightning talk on porting CPython to <a href="https://techhub.social/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> at <a href="https://techhub.social/tags/PyOhio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PyOhio</a> :blobcatcode: Come learn a little about CircuitPython, why porting <a href="https://techhub.social/tags/Python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Python</a> is useful, and some unique challenges that I think are applicable to porting code in general. :blobcatfloppy:

gallaugherAnyone have experience using <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> & sensors to detect presence (or even better distance) through glass office walls? Our MakerSpace has glass walls adjoining halls & I'd like to interact through the glass. I'd like to still use picos, not Pis. Do thermal cameras sense through glass? Human Presence sensors?

gallaugherMaking progress on <a href="https://mastodon.world/tags/3dprinting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#3dprinting</a> robot arms testing a <a href="https://mastodon.world/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircuitPython</a> and <a href="https://threads.net/@raspberrypi/" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@raspberrypi</a> pico lesson for Fall. Will post a tutorial at YouTube.com/@BuildWithProfG along with all files once I’m through. Will also compare the nylon gear Tower servos vs the metal gear Coronas. <a href="https://youtu.be/JeZ4GfZt6q4" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://youtu.be/JeZ4GfZt6q4</a>

anecdataNeed to get data from one microcontroller to another using <a href="https://fosstodon.org/@circuitpython" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@circuitpython</a>? There are many ways. <a href="https://gist.github.com/anecdata/59ca2dcc878fca23b708e8d682fb5694?permalink_comment_id=5683913#gistcomment-5683913" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://gist.github.com/anecdata/59ca2dcc878fca23b708e8d682fb5694?permalink_comment_id=5683913#gistcomment-5683913</a> <a href="https://fosstodon.org/tags/circuitpython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitpython</a> <a href="https://fosstodon.org/tags/microcontrollers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#microcontrollers</a> <a href="https://fosstodon.org/tags/networking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#networking</a> <a href="https://fosstodon.org/tags/PythonOnHardware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PythonOnHardware</a>

Andy Warburton ❌❌❌Finally calling this done! Say hello to the HellSplit a hand-wired, asymmetric 40% split <a href="https://mastodon.social/tags/ortholinear" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ortholinear</a> keyboard with vertical column stagger and two rotary encoders. Powered by a pair of Raspberry Pi Pico's <a href="https://mastodon.social/tags/RP2040" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RP2040</a> and <a href="https://mastodon.social/tags/KMK" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#KMK</a> firmware<a href="https://mastodon.social/tags/mechanicalkeyboards" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mechanicalkeyboards</a> <a href="https://mastodon.social/tags/splitkeyboard" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#splitkeyboard</a> <a href="https://mastodon.social/tags/ergo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ergo</a> <a href="https://mastodon.social/tags/otho" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#otho</a> <a href="https://mastodon.social/tags/mechkb" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mechkb</a> <a href="https://mastodon.social/tags/splitkb" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#splitkb</a> <a href="https://mastodon.social/tags/pipico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pipico</a> <a href="https://mastodon.social/tags/raspberypipico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#raspberypipico</a> <a href="https://mastodon.social/tags/40percent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#40percent</a> <a href="https://mastodon.social/tags/handwired" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#handwired</a> <a href="https://mastodon.social/tags/circuitpython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#circuitpython</a> <a href="https://fosstodon.org/@circuitpython" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@circuitpython</a> <a href="https://mastodon.social/@RaspberryPi" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@RaspberryPi</a> <a href="https://mastodon.social/@rpimag" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@rpimag</a>

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