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#esp32

7 posts7 participants1 post today

:ablobcatbongo: „Ratatui - Are We Embedded Yet?” talk is finally online!

I gave the same talk at Rust Gdansk 9 and Rust Poland 1, this recording is from the second meetup.

It’s my first talk (not counting lightning talks) and I struggle with public speaking :blobcatfakeverified: (trying to change that) but I hope you like it.

Btw. Terminal/presentation had to be re-recorded afterwards so that’s why typing is not in sync.

youtu.be/QPjojOuhbe8?si=X4-hPR

youtu.be- YouTubeEnjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

Has anyone successfuly uploaded Arduino sketches to the Nano ESP32 using the Upload button in the official IDE?

I can only upload them by putting the board in "flash bootloader" mode, burning the bootloader and then uploading the sketch using the ESPTool programmer, which is pretty convoluted I think

#Arduino#Nano#ESP32
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Questions, 4 of 3 (Told ya!)

I want to use a piezo knock sensor so I can tap on the glass and turn the lights on without breaking the door seal. Can I mount the piezo anywhere in the cabinet, or does it need to be on the door.

There are 14 millions piezo sensor tutorials on the web, but every one of them starts with "What's an Arduino?" and and ends with the piezo plugged into a breadboard. Nobody explains the mechanical considerations.

🧵 55/N

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Questions, 3 of 3 (for now).

I want to drive an LCD panel (not pictured). The one I bought uses SPI. If I want to run animations, it needs ~40 MHz. Is it possible to run SPI at that speed through a one meter wire, or should I put another MCU on the back of the display and run USB to it?

I'm leaning toward another MCU.

Thanks.

🧵 54/N

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Questions, 2 of 3.

What's the best way to attach a wire to a LED strip? When I just solder them on, they eventually break off. Could I make a small PCB and bond the strip to that? Should I print some kind of clamp/strain relief thing to hold the wire end in place? If I do the PCB, I'll throw some capacitance on.

I have about 2 cm between the end of the strip and the end of the channel.

Thanks.

🧵 53/N

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Questions, 1 of 3.

I'm planning to wire the six LED channels in parallel, driven from six GPIOs.

I am looking for a good way to connect the wires to the controller board in back. For other recent projects I used JST SL, but I don't want to use them again. They're too big, too hard to unlatch, and not wire-to-board. Maybe Molex CLIK-Mate? Other suggestions? I don't want to buy a crimping tool...

Each LED strip will use 2.25 amps max.

Thanks.

🧵 52/N

Hey, it's been decades since I last did any #electronics stuff, but I want to build a Wifi-connected traffic light style signal with an #ESP32 that I can control with Home Assistant to let family know when I'm on a video or phone call from outside my office. Before I re-learn how to do this stuff (plus figure out the code for it), is there a simple design for something online I can use? The ESP32 I've got coming tomorrow has WiFi and Bluetooth, apparently.