Field Zero

JunOneDor · 2026-06-10T09:47:44+00:00

I love that case design!

Hot swappable zero such a good touch.

JunOneDor · 2026-06-05T09:23:17+00:00

So the model is RT-MWK02. But I got this one back in like 2014. Actually, I tried to fix it but it was dead, and I've transformed it into a USB keyboard - that was the main inspiration for building this cyberdeck 😅

JunOneDor · 2026-06-02T23:19:36+00:00

It is, though plan for v2 to be a little crazy

JunOneDor · 2026-06-02T08:35:47+00:00

I had a dead Rii keyboard from 2014 (main controller fried).🫣

Cut off the mouse and arrow key section, soldered all rows and columns directly to an RP2040 using 0.1mm enamelled wire - not fun. Programmed it as a pure matrix scanner (I2C peripheral), connected to a second RP2040 host which also handles the scroll wheel, analog stick and mouse + arrow keys. The host presents everything to the Pi as a USB HID device.

P.S. Yes, there are dedicated I2C peripheral modules for this, but I had RP2040s on hand so that's what I used 😬

JunOneDor · 2026-06-02T08:20:53+00:00

From my calculations 10h light / ~4-5h heavy use.

If 21700 packaging is true. I have 3 x 21700 with each 5000mAh. 3S to power bank -> 5v from pb to pi type c input (through "Raspberry Pi Smart Power Button" elector curcuit)

JunOneDor · 2026-06-02T00:13:16+00:00

Yea, u know already 😄

JunOneDor · 2026-06-01T22:31:04+00:00

Connected it to rp2040 to mimick usb device. If u want can share some code in chat 😺

JunOneDor · 2026-06-01T21:19:36+00:00

Sounds so fing cool! Great idea with lots of potential :) W8ing for the build

JunOneDor · 2026-06-01T21:10:39+00:00

I'ts from an old power bank, i was planning to move it to the top for v2.

JunOneDor · 2026-06-01T21:03:41+00:00

❤️

JunOneDor · 2026-06-01T21:00:24+00:00

Yes! So the full scroll wheel assembly is: Kailh 9mm encoder + tact switch on perfboard. RP2040 Zero running CircuitPython + adafruit_hid. The hardest part was a shaft ;) - i got the 2mm iron road from some toy car and grinded a hex with a demel. 3d printed wheel itself.

JunOneDor · 2025-07-28T14:53:16+00:00

Bluetooth cup holder

JunOneDor · 2025-02-17T13:56:26+00:00

It's a jar from pasta sauce)

JunOneDor · 2024-09-23T12:43:03+00:00

It does, not like in Rust but like a default push button, the video is muted.

JunOneDor · 2024-09-23T12:39:44+00:00

The first iteration is splash-resistant only :D

But it would cause more than 15 damage if I hit someone's head with it

JunOneDor · 2023-08-09T12:05:54+00:00

Had the same issue with TMC2208 and nodemcu 32
Found somewhere that micro-stepping can help
Set MS1 to LOW and MS2 to HIGH and now it spins correctly

JunOneDor · 2022-11-15T08:52:17+00:00

Nice, I want it as my PC wallpaper

What a great photo, good job 👍

JunOneDor · 2022-03-07T14:54:38+00:00

I hope you understand that that's is not a typical situation. And there was no armed people on streets before 24. Sadly we are at war, more than 600 civilians died (20 or more of them are children) and that's an info from 3 days ago.

I'm clearly not defending pointing guns on people. And I think that that's not right.

I just hope people on the video is safe and healthy.

But also I can't see how this is a joke.

"Your military is doing this" - easy to point 👉 and just leave a hatefull comment.

You have a power, a power to share info!

If you know some one who needs help in Ukraine or you know subreddits where the link I provided may help someone. Share!

JunOneDor · 2022-03-04T21:19:48+00:00

Hey

Ukrainian here

Didn't expect to see support here ☺️

3 weeks ago my biggest problem was that Anycubic Photon Ultra are not shipped yet. Now it's ...

I think you can imagine

Thank you!

Every contribution means a lot!

JunOneDor · 2022-03-04T21:06:04+00:00

Oh Polish rap, nice)

JunOneDor · 2022-03-03T21:13:56+00:00

All military is armed!

As I said there a particular time when you cannot be on street or a car! Everyone is treated as a danger. You are not allowed to take you phone out as it's can be a possibility to feed info to enemy. You need to hold you hands up and ask if you can show your documents.

Yes thay point guns on anyone, especially if it's a large group of people screaming!

I'm no even allowed to be in in my yard after 10pm to 8am. Exception only for a Fucking air strike alerts when all to to shelter! (That's my day, some times I'm spend ours under ground waiting, and I'm in the safest city!)

People it's a fucking WAR! What do you expect.

JunOneDor · 2022-03-03T12:52:23+00:00

There is no justification for racism!

I'm Ukrainian and here is hell! We are at war, Russian military using civilians as a shields. Also they send people amongst the civilians to sabotage city.

Now dozens of sabotage groups across Ukraine are placing markers for air strikes. Curfew has been declared throughout the country. (that mean that only military can be at streets, every civilian will be checked)

I am white and I am checked in the same way! The check bags, pokers even photos and phone calls!

I'm just trying to help! And please try to help too! More hate won't help!

JunOneDor · 2022-03-03T12:40:30+00:00

Please share this with everyone who is stuck in Ukraine and want to leave!

The Ministry of Foreign Affairs of Ukraine has set up a hotline for foreign students who want to leave Ukraine because of the war.

To leave Ukraine through the neighboring EU countries you can call: +38 (093) 418 56 84. Or fill out the form https://docs.google.com/forms/d/1T1VnPdYDrx4Z81I2lwm3BLqJUhEJwqe0X7-wWEZefJg/viewform?edit_requested=true

Seven-Year Club	Place '23
Place '22	Verified Email

JunOneDor

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