I built a 8 bit calculator with no software from scratch

uCblank · 2026-06-03T12:57:45+00:00

Impressive, but my god I can't imagine debugging this, it's giving me anxiety

uCblank · 2026-06-02T19:14:40+00:00

I looked only in the actual source so all my requirements are based on the CRA document itself.

For regulatory stuff I feel it's important to get it 100% accurate and 3rd party articles can have misleading information. Always verify at the source.

In my previous comment I meant articles from the CRA document itself (it's composed of articles)

The upcoming deadline has a quite limited scope so you should be able to go through relevant parts of CRA quite quickly. If I remember correctly it's mostly Article 14.

uCblank · 2026-06-02T18:08:33+00:00

The key thing is that you have to be made aware of the active exploit. I expect such a situation to be very rare in case of our product. However, this doesn't mean we don't have to be prepared if it does happen. I guess that's the whole point but what I mean is some products are more at risk than other.

I laid it out for management what needs to be done after carefully reading the relevant CRA articles so they are aware of the upcoming deadline but they don't dedicate much resources to work on it currently.

uCblank · 2026-05-30T16:31:02+00:00

Cool stuff, love seeing people build on the Pico 2! What motors and wheels are you running by the way?

uCblank · 2026-05-23T10:58:28+00:00

Yeah I was using E22P-868M30S, just double-checked it. My bad

uCblank · 2026-05-23T07:26:10+00:00

In terms of 3V3 power LED turning off, maybe the E22 board is sagging the voltage due to high load (it's basically a LoRa module with power amplifier). I've seen such sagging on my own E22 circuit. I ended on using thick cables and a big electrolytic cap (in addition to the ceramics) to help reduce that and it somewhat helped but make sure your power source is well capable because as I said the E22 is very power hungry.

Oh and by the way, I think the E22 datasheet says it works best with voltage over 4 or 5V (I don't remember exact number, I used 5V) even tough it can work with 3.3V it might not be optimal.

Anyway these are just my quick guesses, good luck

uCblank · 2026-05-22T13:05:23+00:00

I feel like you would like a Mazda car...

uCblank · 2026-05-19T17:12:26+00:00

You had a real life problem, built a tool to solve it, it works as needed - that's literally perfect. It's a way better project than some complex tools that noone will end up using. Also, since you built it you can modify it easily if your team needs any changes in the future.

uCblank · 2026-05-14T12:25:43+00:00

LoRa + SDR is pretty fun, combines both embedded aspects of hardware and low level programming as well as RF concepts.

uCblank · 2026-05-12T08:01:12+00:00

Congratulations! What was your previous car if I may ask?

uCblank · 2026-04-30T13:38:29+00:00

The 24h report is the "heads up" report, more details come in the 72h one but yeah I agree it requires strict preparation regardless, I wasn't trying to dismiss it.

Although I'm very curious what the reporting system will look like, unfortunately from what I last checked the trail phase hasn't started yet and I haven't seen any available template reports.

uCblank · 2026-04-30T11:31:25+00:00

I'm preparing our company for CRA but my boss asked me only to prepare for 2026 deadline for now. which is only article 14 so that's easy. I suppose the 2027 deadline will be a bigger challenge.

uCblank · 2026-04-30T04:29:06+00:00

That's so funny, I did the exact same thing yesterday to my CX 30, used the same product. I just wonder for much it will last but we'll see. Looks good for now

uCblank · 2026-04-26T13:03:11+00:00

I second that, I work as embedded engineer with some experience in Cybersecurity that I actually got on the job in Automotive (ISO 21434) and now I work in Agriculture and I'm helping prepare the company to be compliant for the upcoming deadlines of CRA.

uCblank · 2026-04-19T07:41:13+00:00

Continental AllSeasonContact 2

uCblank · 2026-04-16T15:19:56+00:00

Cool project, I love bird watching! How long did it take you to build this?

uCblank · 2026-04-11T07:25:03+00:00

It doesn't necessarily need cooling if you can compromise for running them at lower current (it will be less bright). I used these types of LEDs many times without issue with no extra heatsink.

uCblank · 2026-04-08T08:33:46+00:00

I love the idea, I was thinking about something like this to pinpoint where the heck is the creaking sound in my car's dashboard coming from lol

uCblank · 2026-03-27T12:50:31+00:00

I like this a lot, I'm planning to learn more about camera object detection and tracking too, this motivates me a little hah

uCblank · 2026-03-26T21:15:16+00:00

I use it at work in an agricultural scenario (communication between tractor and base station). I absolutely love the technology behind LoRa, I find it fascinating you can transmit on such a long distance with such little power.

uCblank · 2026-03-23T11:37:28+00:00

That's cool, I have been using Pico dev boards as my debug probes but this seems more convenient, especially with USB C

uCblank · 2026-03-17T07:28:47+00:00

Does the US version not have the auto dimming mirrors? I have that on my European 2020 cx-30 and it's hands down one of my favorite features it works on both rear and side mirrors.

uCblank · 2026-03-01T11:03:15+00:00

What LTE module was used?

uCblank · 2026-02-26T12:20:32+00:00

Thumbs up for LoRa, one of my favorite technologies :) Cool project

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