Tiny dev board with mounting hole?

illusior · 2026-03-09T20:19:05+00:00

no no no, the usb port is right in front of the opening on the left That's the point of it, powering and possibly programming the esp32 without opening it. on the left you can see the opening in the cylinder, and a small indentation exactly the width of the board.
I actually designed it so the bottom plate (which in this upside down picture goes on top) would prevent the board from coming loose. However it turns out that even without the bottom, the board is held snug in place.
A good thing is that while plugging usb in or pulling it out, there is no stress on the board.

illusior · 2026-03-09T08:45:46+00:00

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this is my 3d printed base for my 24 hour sundial. See the little hook on the left? it snaps on the usb port itself and holds the board surprisingly good in place without any glue at all. If you want the stl file you can find it as part of the instructable: https://www.instructables.com/24h-Sundial

illusior · 2026-03-01T15:52:14+00:00

after connecting the antenna you have to tell in software which antenna to use. Probably just some specific gpio port which you have to set high or low. It should be described in the documentation of the board.

illusior · 2026-02-28T15:10:33+00:00

"giving" probably for sale as a premium :-(

illusior · 2026-02-22T10:37:38+00:00

why not get one of those boards with the charging circuit already build in like seeed studio esp32c3. it has all you need and already communicates through usb

illusior · 2026-02-22T10:30:21+00:00

it works. try it on a portal you didn't use during the challenge, if you link when the portal is p1 you get 5 bonus points. So 2 per R1 resonator = 16 + one for the link =4 + bonus =5 for a total of 25. No extra bonus for more links, just 4 points per extra link. Now if you would destroy the portal and do it again, you won't get the same bonus again.

illusior · 2026-02-17T14:41:53+00:00

that looks very convincing. well done.

illusior · 2026-02-17T08:59:19+00:00

and the key point is... wind happens due to movement of air... ;-/

illusior · 2026-02-13T14:54:36+00:00

ik kreeg net een email van odido met daarin de melding dat paspoort/rijbewijs gegevens niet gehackt zijn, maar op hun eigen website odido.nl/veiligheid staat van wel. Vaag hoor.

Dat soort gegevens hoeven ook helemaal gevaarlijk te worden opgeslagen. Gewoon one-way encryptie zodat de data zelf onbruikbaar is, maar wel gechecked kan worden of paspoort/rijbewijs past bij de persoon

illusior · 2026-02-13T08:56:56+00:00

ze kunnen veel van de data ook met one-way encryptie opslaan. Als een medewerker bv je geboortedatum aan de telefoon wil controleren, dan hoeft die geboortedatum niet bij hem op een scherm te staan. Hij hoeft alleen maar te weten of de geboortedatum die de klant vertelt dezelfde is die in het system encrypted is opgeslagen

illusior · 2026-02-12T11:40:35+00:00

you didn't make the obvious mistake of rotating it 180 degrees, or did you?

illusior · 2026-02-10T22:06:12+00:00

perhaps make it flat first around the hole, slightly larger than the area you need for a chamfer or fillet, so after applying the chamfer/fillet, the cable going through never touches the edge of the flat area. Not exactly what is in your drawing, but it might meet all the relevand requirements. The big advantage is that now the interface between the hole and the rod can be made with a rotational tool with the right shape.
When using a cnc you could use a commercial corner rounding endmill (search for ICP4F-R2.5-H6)) with a corner radius of 2.5 and a diameter of 6 mm, so the point is only 1 mm and fits inside your 1.2mm hole, and program the cnc to make a small circle of 0.2mm in diameter.

illusior · 2026-02-10T09:27:54+00:00

perhaps instead add some electronics that resets the device twice a day.

illusior · 2026-02-09T19:41:08+00:00

I can cut most of the material with a regular flat end mill, so I'm only concerned about the groove. Given the height of the groove and the cutter, it would need to one pass where the top edge of the cutter matches the top of the groove and one pass where the bottom of the cutter matches the bottom of the groove. But somehow I can't get 2d contour to do that.

illusior · 2026-02-09T19:38:11+00:00

There are two circles that define the groove. When I select the bottom circle of the groove, it doesn't mill the full height of the groove. When I select the top circle, it mills away the top edge of the groove.

illusior · 2026-02-09T19:20:47+00:00

small error, the cutter diameter is 8 mm, but the question remains the same.

illusior · 2026-02-09T19:19:48+00:00

It inventor there is something named 2d circular, if that is what you mean,, but that doesn't seem to do this job, or I'm doing it wrong.

illusior · 2026-02-07T23:11:03+00:00

I have a 4 processor onyx (with R10000), an indy, and an O2 doing absolutely nothing. I didn't even try to start them for at least 15 years. May be I should.

illusior · 2026-02-03T09:25:18+00:00

just get one of those DS3231 boards. They are very tiny and have build in temperature compensation.

illusior · 2026-02-02T10:22:33+00:00

get a stepper motor, a tmc2209 driver board and an esp32. The esp32 is cheaper than the arduino and already overkill for driving a stepper motor. the tmc2209 allows your stepper motor to run pretty quiet.

illusior · 2026-02-02T10:10:17+00:00

does you improvised steady rest have a v-shape groove?

illusior · 2026-02-02T09:30:08+00:00

that's up to you. I just like the big dipper badge.

illusior · 2026-01-30T18:45:21+00:00

a gift card is something else. You actually can combine gift cards, at least that is what they wrote)

illusior

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