iiinova — where your digital self keeps evolving

Tom Fleet @tomfleet.bsky.social · 13/04/2025

Insanity! Now and then?! Real ones know you use them as kindling, and chuck at least two more on each and every fire.

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Tom Fleet @tomfleet.bsky.social · 30/03/2025

I guess it's more "tap" and "swipe" than it is "click" these days?

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Tom Fleet @tomfleet.bsky.social · 21/03/2025

Don't forget the I2C pull-ups .. unless you are set on the internal ones in the nRF!

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Reposted by Tom Fleet

M@ M@z (he/him) @matzelectronics.bsky.social · 17/03/2025

It's up for sale! Grab yours today! The ATTINY PRO is a small-but-capable ATtiny3217 development board with a form-factor similar to a Pro Micro. It's like the original Arduino board, but with the much better peripherals of the Tiny AVR 1 and 2 series. www.tindie.com/products/mat...

A small printed circuit board with a USB micro jack, a ch340 ic, a switch, an attiny3217 ic, and a 4 pin just connector.

A Pinout diagram for the ATTINY PRO development board, showing power, ground, port pin, digital, analog, programming, and special function pin locations.

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Tom Fleet @tomfleet.bsky.social · 17/03/2025

But yeah. the actual measurement offset here is absolutely down to the fact that these two sensors believe they are measuring drastically different air temps, so the are calibrating against incorrect data internally.

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Tom Fleet @tomfleet.bsky.social · 17/03/2025

5 degrees* My point is that these parts have complex dynamics. They can even have error introduced via the measurement/power mode chosen. Hammering away in high perf mode gives you chunks of fairly significant current that needs to be dissipated eventually Thermals are everything with these.

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Tom Fleet @tomfleet.bsky.social · 17/03/2025

Ok then, the other board reads nearly 22 - some 6 degrees out. The idea is that figure should show (and match) the *gas* temp. My point is, the two sensor algorithms are being fed different inputs, that directly feed into the calculation of the equivalent CO2 output value.

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Tom Fleet @tomfleet.bsky.social · 17/03/2025

Speaking of thermal coupling. I guess there is AC on, and a vent blowing at the EPD board, probably with a reasonable groundplane acting as heatsink? If the sensor thinks it's sensing a *gas* temp that has that temp difference, well.. the calculated equivalent CO2 output is gas temp dependent, yeah?

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Tom Fleet @tomfleet.bsky.social · 17/03/2025

These sensors, like the MOX chemristive iAQ sensors are a popular design topic recently... Very very few people properly implement these parts correctly, or, in such a way that will give the figures quoted for accuracy, etc.

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Tom Fleet @tomfleet.bsky.social · 17/03/2025

It needs calibration, it needs *very much* decoupling from the board thermal contributions - ie,the ESP, the LDO sourcing that back-light... also from memory, keep it away from sunlight (strong wideband IR - as it's IR photo-acoustic)

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Tom Fleet @tomfleet.bsky.social · 16/03/2025

Well that is some perfect silk screen commentary, if I don't say so.

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Tom Fleet @tomfleet.bsky.social · 05/03/2025

I thought you were going to just say "I can get behind that". Just like Sisyphus got behind that rock.

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Tom Fleet @tomfleet.bsky.social · 05/03/2025

Badly aged takes on the raspberry pi silicon security offerings...

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Reposted by Tom Fleet

Album Almanac @albumalmanac.bsky.social · 28/02/2025

🗓️ 25th anniversary! (February 28, 2000) 💿 Eels - Daisies of the Galaxy 🎶 Uh-huh, goddamn right, it's a beautiful day #Eels

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Tom Fleet @tomfleet.bsky.social · 28/02/2025

Both? As in, to my understanding, these MIP fall into that category of panel? But yeah. Sharp have a couple of RGB MIP options for this tech.

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Tom Fleet @tomfleet.bsky.social · 28/02/2025

And they also offer a couple of smaller colour panels, which are on my to do / interest list...

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Tom Fleet @tomfleet.bsky.social · 28/02/2025

Oh, and the code is a fork of the Adafruit fork of this project - that explains how the "video" data is generated and packed. Adafruit forked and scaled for memory LCD, all I did was source the data from the ESP32 FLASH SPIFFS, instead of an external SPI Flash device. github.com/hackffm/ESP3...

github.com

GitHub - hackffm/ESP32_BadApple: Bad Apple Video on ESP32 with SSD1306 OLED

Bad Apple Video on ESP32 with SSD1306 OLED. Contribute to hackffm/ESP32_BadApple development by creating an account on GitHub.

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Tom Fleet @tomfleet.bsky.social · 28/02/2025

Forgot I had a load of serial output left in, slowing things down a bit. Seems smoother with it off anyway. Haven't actually timed it, but certainly looks better.

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Tom Fleet @tomfleet.bsky.social · 28/02/2025

A memory in pixel / memory LCD from Sharp. Very fun things indeed. www.sharpsde.com/fileadmin/pr...

sharpsde.com

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Tom Fleet @tomfleet.bsky.social · 28/02/2025

So I haven't actually seen this bad apple thing yet, or at least until now. But it looks pretty good on a memory pixel LCD, streaming out of the flash of an ESP32-S3! Speedy!

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Tom Fleet @tomfleet.bsky.social · 23/02/2025

Hell forgot the alt text on the photos. They are just two photos of a very broken e-paper display, showing garbled image data that gets a bit less garbled with a gentle touch!

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Tom Fleet @tomfleet.bsky.social · 23/02/2025

Aw shoot. So looks like this display is borked. It got shipped with the FPC folded around the padding foam, rather than flat. I can get a picture if I tap the die bonded drivers *just right* - but it's definitely pretty dodgy! But - wasn't the code at least!

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Tom Fleet @tomfleet.bsky.social · 20/02/2025

Hm. Certainly not a Banksy itself, but in the style of. The tag is a good indicator, along with the stencil bleed. Lot of this stencil around Hamburg.

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Tom Fleet @tomfleet.bsky.social · 18/02/2025

I think i'll have another look - along with this, which supposedly works, and seems to have the bisected display approach, which this thing needs. github.com/wavesharetea...

github.com

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Tom Fleet @tomfleet.bsky.social · 17/02/2025

Well that patterning is my result from playing with bb_fastepd, having defined FUTURE (well. Removing the #ifdef...), but I'm missing something, clearly... Partial updates gives noise on 1/4 the panel, and panel test gives what your can see currently... Need to spend more than 5 mins on tinkering!

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Tom Fleet @tomfleet.bsky.social · 17/02/2025

It's 5.79"? 792 x 292px, this one is B/W, but there are b/w/r and b/w/r/y versions also.

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Tom Fleet @tomfleet.bsky.social · 17/02/2025

I... I don't have a screen fault - the donor is fully functional :) What you might be seeing is the garbage printed to the e-paper display, that is still visible from playing with it the other night!

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Tom Fleet @tomfleet.bsky.social · 17/02/2025

I thought that had come to be less reliable? Besides. I can more easily remember how to swear :)

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Tom Fleet @tomfleet.bsky.social · 14/02/2025

I know a guy who will sell you some RP2350 with a few nRF ground up and mixed in?

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Tom Fleet @tomfleet.bsky.social · 12/02/2025

And don't forget that the easiest brute force password recovery method is often upon the owner...

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Tom Fleet @tomfleet.bsky.social · 09/02/2025

Had the same idea a little while back - it does seem to help a huge amount!

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Tom Fleet @tomfleet.bsky.social · 07/02/2025

Did this really need AI images? What's the sense in talking about a real product, only to dump that rubbish for an article image.

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Tom Fleet @tomfleet.bsky.social · 07/02/2025

www.aliexpress.com/item/1005005... I swear this is real.

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Tom Fleet @tomfleet.bsky.social · 07/02/2025

Ok so i've not seen breaking bad, so I might be missing a reference...? This one is far out even for AliExpress!

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Tom Fleet @tomfleet.bsky.social · 06/02/2025

Oh I actually do that. Along with the ones that respond follow the "statement, mitigation, moral overview, and 'what are my thoughts on this'?" There's a very recognizable"arc" to a gpt answer.

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Tom Fleet @tomfleet.bsky.social · 06/02/2025

Worse that when it's wrong (often) - these people will now start to argue with your corrections with newfound arrogance...

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Tom Fleet @tomfleet.bsky.social · 06/02/2025

We had a Tesla retail showroom in the city, usually flipped it the bird on the way past. It's disappeared now, which is just lovely.

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Tom Fleet @tomfleet.bsky.social · 06/02/2025

I have no idea why anyone pays for AI... Just go ask any "helpful" assistant on any website these days.

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Tom Fleet @tomfleet.bsky.social · 06/02/2025

Very cool! Have done similar experiments in streaming a capture window to some of the Akai controllers 🙂

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Tom Fleet @tomfleet.bsky.social · 06/02/2025

What do we think chat, does this lens look like it's IR to you?

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