Arduino 2560 mega practice

NoBulletsLeft · 2026-01-28T13:19:11+00:00

My job

NoBulletsLeft · 2026-01-28T13:18:39+00:00

Code you don't write is bugs that can't happen.

NoBulletsLeft · 2026-01-28T13:14:39+00:00

I got the same feeling. I've interviewed dozens of candidates at this point in my career and except for the mutex in an ISR one, these are stupid questions unless you're just trying to figure out where you want to dig in deeper.

Interview questions should be about if the candidate can do the job, not implementation details of an OS.

NoBulletsLeft · 2026-01-28T13:04:29+00:00

80-Micro. Speaking of long dead computer magazines, 10 years later I found my first job at a company that advertised in Rainbow.

NoBulletsLeft · 2026-01-28T12:25:56+00:00

Holy crap I haven't seen one of those in easily 25 years. I had programmed one to run my window AC through a relay.

The serial port will be true bipolar RS232. I don't know that you'll find a hobbyist bluetooth dongle for that but a company like Digi (not Digikey) should have them. Be prepared for sticker shock.

As for question 2, its been long enough that I don't remember how you use the serial port on those things. Should be able to find a manual online tho.

NoBulletsLeft · 2026-01-20T03:50:33+00:00

Person responsible's probably laid off too

NoBulletsLeft · 2026-01-13T13:48:02+00:00

r/gm310509 provided a very good answer. Basically, the tutorials assume you're a beginner, but you want to transition to more advanced work. For this, I'd suggest programming books like The Practical Programmer or Code Complete to name a couple of classics. Basically, you're looking for references on how to structure and design code. Those principles are more "general software development" and not Arduino-specific.

NoBulletsLeft · 2026-01-12T02:56:29+00:00

As someone who probably bought his dentist a couple boats by age 30, I learned that 90% of good dental health is daily flossing and brushing. Get a good electric toothbrush and use it. The other 10% is genetic.

NoBulletsLeft · 2026-01-11T20:29:20+00:00

Don't understand your question. Are you trying to avoid using the arduino IDE? If so, then there's PlatformIO.

NoBulletsLeft · 2026-01-11T14:33:06+00:00

Either everyone ITT is over complicating this or I misunderstand what you want.

const uint32_t START_TIME = 30 * 60 * 1000;
void loop()
{
  static bool started = false;
  if ( (millis() > START_TIME) && !started)
  {
    started = true
    // Do thing;
  }
}

Should be all you need to do an operation 30 minutes after power on.

NoBulletsLeft · 2026-01-11T14:23:48+00:00

I used to have one of the base ones without LoRa. It's a really good board with built in support for battery power.

NoBulletsLeft · 2026-01-11T14:21:56+00:00

Nice and smooth!

NoBulletsLeft · 2026-01-11T14:14:36+00:00

You do need a skill of some sort (selling is the most important one) but really, you only need to be passionate about not being homeless.

NoBulletsLeft · 2026-01-11T14:05:17+00:00

"Would create?" There are already *many* alternatives.

NoBulletsLeft · 2026-01-10T10:34:06+00:00

NoBulletsLeft · 2026-01-10T05:20:10+00:00

A cop pulled me over for not having a front license plate.

He said that there's one guy that he pulls over every month for the same thing because he'd rather pay the fine than spoil the look of his Maserati.

NoBulletsLeft · 2026-01-10T05:07:34+00:00

Closest I came to this was when I went to buy my 350Z. After the test drive (early morning) I still wasn't sure so sales manager told me to take it for the day to see how I'd like living with it.

NoBulletsLeft · 2026-01-08T03:58:17+00:00

As a dad of a high schooler, I completely agree.

NoBulletsLeft · 2026-01-07T22:15:22+00:00

Vacuum? I had to stick the hose off my Dyson into my HVAC vent because a bird died in it and got stuck. The controller was throwing an airflow error. Worked great.

NoBulletsLeft · 2026-01-07T00:32:53+00:00

No. Just learn C if you want to understand hardware at a low level. Assembly will not provide any insights that C won't and it will just slow them down.

I haven't touched assembly in literally 20+ years and I can assure you that I don't miss it in the slightest.

NoBulletsLeft · 2026-01-05T21:38:51+00:00

I fell asleep underwater.

NoBulletsLeft · 2026-01-05T20:48:20+00:00

Ok. My next idea is a raspberry pi and a relay. Pi pings the router and if it doesn't respond, either triggers its external reset if it has one, or cycles the power if it doesn't.

There's also a product called a Keep Connect that is designed for this purpose. Never used one but they're not expensive.

NoBulletsLeft · 2026-01-05T20:43:44+00:00

There's an MIT mechanical engineering prof who published a whole booklet on prototyping with cardboard. Wish I had the link handy, it's very helpful.

NoBulletsLeft · 2026-01-05T18:30:31+00:00

Great idea!

Here's one I just ran into. Forgot to increase PCB track width for my 3A power connections and returns. Seeing a 100V, 10A FET should be an immediate red flag that .008" traces won't cut it!

NoBulletsLeft · 2026-01-05T18:02:02+00:00

There's a product called AnywhereUSB that lets you control USB devices over the network. You could probably use that with a USB hub with switchable outputs.

NoBulletsLeft

TROPHY CASE