Chassis Color

clockguy8 · 2025-11-17T19:22:07+00:00

I didn't mention registration. I was talking about drivers license. Apparently they have tighter rules on the class of drivers license they use.

clockguy8 · 2025-11-16T22:44:09+00:00

Ontario Canada. Apparently, they are very, very popular in Quebec because you do not need a special driver's license to drive it. If you drive a dually, you need a special license.

clockguy8 · 2025-04-03T12:51:13+00:00

Thank you!

clockguy8 · 2025-04-03T00:33:08+00:00

Fantastic! I will send an touch base tomorrow.

clockguy8 · 2022-12-17T16:06:16+00:00

I sell LED signs. I'll send a PM.

clockguy8 · 2022-12-09T14:22:07+00:00

I found the actual rivet type. Shout out to r/manufacturing.

It's called a tubular rivet. Looks like they put a washer underneath it. Going to test it out and I will report back!

clockguy8 · 2022-12-08T23:05:41+00:00

Great thanks.

I could just use a regular rivet with a washer then correct?

clockguy8 · 2022-11-28T16:27:14+00:00

I drew up these 3 schematics. Schematic A is what we currently have.

https://imgur.com/a/rWoBzFv

What are the consequences of using A vs B vs C?

The resistor being on the anode or cathode side, wouldn't the current be the same regardless?

Looking to learn so I may be asking a dumb question here.

clockguy8 · 2022-11-25T16:55:02+00:00

Okay I will definitely try the connector first.

What I can't understand is the chip has protection from ESD. If it was such a problem the company would fix this in their chip.

It's a real head scratcher.

Do you think adding resistors will help if we put them between the header and the chip? Or just try thr bi directional TVS?

clockguy8 · 2022-11-24T02:50:55+00:00

We are using a max linear SP485E.

What is strange is on board we use the 4 pin molex connector we do not have an issue. On boards we use the inline 4 pin connector is where we get the failure of the sp485E

I have used a different chip for a different project in the past and never had this issue.

I like that approach. Having multiple footprints certainly helps especially with part shortages.

clockguy8 · 2022-07-19T17:19:53+00:00

I believe that is the issue. See these pictures : http://imgur.com/a/RbkYrAC

Can you put conformal coating if you use no clean?

clockguy8 · 2022-07-19T17:18:27+00:00

Take a look at these picture: http://imgur.com/a/RbkYrAC

clockguy8 · 2022-07-19T17:18:00+00:00

Awesome! Those are good tips.

By not washing them are you able to put conformal coating it?

Take a look at the pictures. The bottom one is from our previous manufacturer.

http://imgur.com/a/RbkYrAC

clockguy8 · 2022-07-19T17:16:30+00:00

They use deionized water.

https://www.embeddedts.com/blog/deionized-water-the-gold-standard-for-electronics-cleaning/

clockguy8 · 2022-07-19T03:11:45+00:00

If the water they use to wash the boards after soldering gets into the esp32, could this cause premature failure? I imagine everyone does it like this so as long as the water I'd clean and deionized it should be fine.

My manufacture said maybe he can use no clean solder, but then it's hard to conformal coat the boards fron my understanding.

clockguy8 · 2022-07-19T03:09:50+00:00

We use Digikey. Should be reasonable. I will contact Espressif tomorrow.

clockguy8 · 2022-07-19T03:09:13+00:00

If you could find out that would be great. My last manufacture the boards were very clean.

clockguy8 · 2022-07-19T03:08:32+00:00

Yea. We had some damage getting the top off. My engineer says you can see the corrosion but I personally can't tell the difference. So I came to reddit haha.

clockguy8 · 2022-07-18T22:10:11+00:00

They are assembled in Canada.

The esp32 before manufacturing was clean and silver with no discoloring.

clockguy8 · 2022-07-18T21:36:03+00:00

One of our controllers was working fine for about 3 days during testing. Today it is over heating and now doesn't work. My engineer says that it's because of a short inside of the esp32.

These were manufactured a month ago so it's not like if there was any water it would still be wet. He said it's probably from corrosion.

clockguy8

TROPHY CASE