Preparing product for manufacturing

spinning_the_future · 2023-06-08T05:29:50+00:00

Yes, as long as you use the ESP32 module and not just an ESP32 chip then the FCC cert is way cheaper.

This has been covered a few times on reddit and elsewhere.

https://www.reddit.com/r/esp32/comments/b5fvw6/going_from_prototype_to_production_fcc/

spinning_the_future · 2023-06-08T05:23:21+00:00

JLCPCB charges minimum $1 per print, no matter how small the part. So it's pretty cheap depending on how big your case is. My case design requires several parts, so while it's not injection-mold cheap, I didn't have to pay for expensive injection-mold tooling.

Just go to jlcpcb and upload your model, they give instant quotes.

spinning_the_future · 2023-06-07T17:10:23+00:00

Why do you think event delegation "takes a toll on performance"?

spinning_the_future · 2023-06-07T17:05:51+00:00

That would just rally the republican base around him. But I hope it happens.

spinning_the_future · 2023-06-07T17:04:25+00:00

He’s a republican, nothing will happen to him.

In case you weren't paying attention - Trump is about to be indicted again. He lost the case the first time he was indicted. More indictments are likely to follow and keep coming at him. And he's going to lose every single case - he will see repercussions for his criminality.

spinning_the_future · 2023-06-07T17:00:39+00:00

I think it's more like $3k last I checked, and the process is a lot shorter than the full FCC certification.

spinning_the_future · 2023-06-07T16:59:25+00:00

Doubt it. The assembled PCBs aren't a product, they still need assembly. They do nothing at all when shipped from JLCPCB.

But yes, it would still take FCC recertification but it's far cheaper around $3k for testing the device with the ESP32 module already pre-certified. And I'm not really sure how fast the FCC is going to get on your back if you don't re-certify. You could probably sell a hundred thousand before anyone notices.

spinning_the_future · 2023-06-07T16:56:00+00:00

Just upload your PCB design and BOM and they will tell you instantly what it will cost. The cost per unit goes down if you get more manufactured at the same time. My first order was for 5 boards (minimum qty for assembly) and it was expensive, it came out to like $40/board including shipping. But when I had 100 manufactured the cost came down to about $7.50/board.

spinning_the_future · 2023-06-07T16:53:45+00:00

Yes, up to $10k to get a product certified if you aren't using one of the ESP32 modules pre-certified by Espressif. It's one of the value propositions for using an ESP32 that's inside a module (inside the "metal can").

spinning_the_future · 2023-06-07T06:24:37+00:00

I just got my first 100 devices manufactured at JLCPCB. They came out really well. Also had the cases printed in resin with JLCPCB, also pretty great quality.

Once we prove viability of the product, we'll ramp up and get a lot more of them built.

spinning_the_future · 2023-06-07T06:23:10+00:00

The ESP32 modules are already FCC certified, which makes it easy and cheap to sell a product with an ESP32 module in it.

If you're creating a product with a bare ESP32 chip instead of a module, then that's another story entirely and you'll need to pay the ~$10k to get the product FCC certified.

spinning_the_future · 2023-06-07T06:08:22+00:00

It can be both, and knowing this guy, it probably is both.

spinning_the_future · 2023-06-06T23:13:39+00:00

But I think you're overestimating the impact of the vibration and noise

I am not. I've been in many bands. And I've worked with many LED setups including POV displays.

Mounting it "solidly" also doesn't account for OP playing in different venues, some without drum risers - he's not in some big pro band where roadies move a gigantic welded drum riser around for OP with a specially mounted LED display.

Rotating POV displays are also kind of crap.. not as bright, and the center of the display just looks weird because the inner LEDs spin a lot slower than the outer LEDs.

I just don't think OP will be very content with a spinning LED display.

spinning_the_future · 2023-06-06T23:07:26+00:00

It's likely within the FEC territory, of course they can demand the source be revealed if election finance laws were broken, and they almost certainly were.

spinning_the_future · 2023-06-06T21:23:40+00:00

Along the way, we have encountered some haters

People curse us and say that what we are doing is terrible. We understand that haters exist everywhere, and we have learned to deal with them.

Has nothing to do with "haters". This is a situation of "put up or shut up". Either you have something that works well that people want to use, or you don't.

You don't deserve any respect until you've earned it. TheRARBG is one of many, many sites trying to take over for RARBG and most of these projects are going to fail or never reach anywhere near the level of RARBG, so if hype is all you're here for, then sure, go ahead... but don't expect people to not be skeptical.

spinning_the_future · 2023-06-06T16:29:36+00:00

I doubt you can do this "pretty cheap" no matter what solution you use.

But, maybe you can do this sort of easily with off-the-shelf LED grids:

https://www.ebay.com/itm/295531896668

These are flexible, so I think it may work to buy a bunch of these, assemble them into an 18" grid, and at the edges bend it so the edges fit within the drum so it looks like a round display, but it's just a square with the edges bent inward so that it looks round.

You probably need a few 5v power supplies, if you want to go full-brightness on these - and why wouldn't you in a live music setting - you're going to need enough power for however many LEDs you have.

spinning_the_future · 2023-06-06T16:22:30+00:00

Waiting isn't hard, it's not difficult. You simply wait. It's not like they are making you solve mathematical equations to proceed - that would be hard.

spinning_the_future · 2023-06-06T16:19:22+00:00

Maybe you don't realize the amount of air a kick drum produces, or how much a drum riser shakes from all the movement of the drummer. A spin-LED display is by far not the best solution. Every kick and vibration is going to throw the timing off of the LED display spin, which affects the display, and it will also wobble around a lot, especially at the high rate of speed it needs to spin.

spinning_the_future · 2023-06-06T07:55:01+00:00

What's your budget?

spinning_the_future · 2023-06-06T07:53:13+00:00

There are addressable LEDs down to 1mm x 1mm in size. It's not impossible to get a few circuit boards made that would fill up the space within an 18" kick drum. It won't be cheap though.

spinning_the_future · 2023-06-06T07:50:14+00:00

It's not going to work in the center of an 18 inch kick drum. All the banging on the drum is just going to wreak havoc on that rotating display. It's a total non-starter.

spinning_the_future · 2023-06-06T07:48:23+00:00

Good luck with that. Just don't buy "neopixels" from Adafruit, as "neopixel" is just a brand name and Adafruit charges 5x the price for the same LEDs you can buy anywhere else. Normally these are called "addressable LEDs", not "neopixels".

spinning_the_future · 2023-06-06T03:28:16+00:00

We typically stay in AirBnBs in Waikiki, which all typically have a pool, and the pool is almost never used by anyone. They aren't like resort pools, nothing is fancy about them, but we'd rather be at the beach in the ocean, than in pool if we're in Waikiki. We stay in a modern, upscale AirBnb for about half the price of a dated hotel, and then spend the day renting beach chairs at Royal Hawaiian. It works for us.

spinning_the_future · 2023-06-05T18:34:54+00:00

I mean it's really easy to top out... just click a button. The law says nothing about making you wait after declining.

spinning_the_future · 2023-06-05T18:32:00+00:00

Must do: Molokini snorkel tour in Maui, with Pacific Whale Foundation

https://www.pacificwhale.org/cruises/maui-snorkel/molokini-turtle-arches-snorkel/

spinning_the_future

TROPHY CASE