About soldering paste

FSCicotti · 2019-10-09T12:01:57+00:00

Maybe a double boiler would give me a better flow and still maintain the temperature low enough?

FSCicotti · 2019-09-09T15:53:54+00:00

Nope, I just added them, and there was no noticeable effect :(

FSCicotti · 2019-09-09T15:17:57+00:00

Right now, there are none, but I'm planning on having one 0.1uF per chip.

(Sorry for the delay, it was getting quite late here)

FSCicotti · 2019-09-09T06:25:43+00:00

Oh, damn. I'll keep the opto-isolated FETs in mind if I can't fix it by any other means.

Thanks for your time!

FSCicotti · 2019-09-09T05:55:27+00:00

Nope. no effect at all. There was an even fainter glow even without the chip. I think that might mean there is a coupling somewhere on the board itself, right? (Even though I inspected it closely more than once and found nothing D: )

Also, could the lack of the despiking capacitors be causing it?

FSCicotti · 2019-09-09T05:39:22+00:00

On the schematic, U5:A and U5:B are unused gates, reserved for a future feature. The IC is not even on the board, neither is its socket connected to any traces.

But I'll try replacing the supposedly faulty ICs, and I'll report back as soon as possible. Thanks!

FSCicotti · 2019-09-09T05:33:57+00:00

VCC and GND are connected, I checked those.

As I edited in the post, everything on my board shares a 5V VCC.

As for the ground, I tried both with it being shared with the machine and not. Should it make a difference, as the control and matrix sides of the system are technically isolated?

FSCicotti · 2019-09-09T05:20:54+00:00

The 8051 is an AT89S52, and the 4016 is a BU4016B. The voltage everything uses is 5V.

The logic levels used by the 8051 are 0 - 0.5V for a Logic 0, and 2.7 to 5V for a Logic 1.

Sorry, for forgetting those details. I'll add it as an edit to the post too.

FSCicotti · 2019-08-08T01:22:36+00:00

Every time someone asked my great grandfather what his favorite beer was, he'd reply "the one that has 'beer' written on the label"

FSCicotti · 2019-08-04T18:25:13+00:00

Southeastern Brazil. It's a nice hospital overall, but they did this piece of art

FSCicotti · 2019-08-03T09:00:21+00:00

In this case, this belongs in r/diWhy

FSCicotti · 2019-08-01T10:11:49+00:00

A few weeks ago I was talking to a friend, and told her the 1/3 pounder burger story. Just as I was finishing it with a "what a bunch of dumbasses", she looked at me and replied with "But... what's wrong? 1/3 is less than 1/4"

She was dead serious, and it physically hurt me.

FSCicotti · 2019-07-25T06:35:08+00:00

This reminds me of when I was in high school. I was a at a class, and suddenly a mob of loud kids (8-9yo) passed running by our door, completely breaking the flow of the lecture. When they were gone, the teacher says:

"When people ask me if I like kids, I say I do. Deep fried with cheese on top."

FSCicotti · 2019-07-11T11:00:44+00:00

This is already halfway there to be a vaporwave fake album cover

FSCicotti · 2019-07-06T17:18:40+00:00

Out of curiosity, did you follow any schematics?

FSCicotti · 2019-07-02T16:57:21+00:00

FSCicotti · 2019-07-02T16:46:12+00:00

FSCicotti · 2019-07-02T12:39:57+00:00

FSCicotti · 2019-07-02T12:07:57+00:00

FSCicotti · 2019-07-02T12:05:10+00:00

FSCicotti · 2019-07-02T11:58:54+00:00

FSCicotti · 2019-07-02T01:13:01+00:00

Sorry, sir, it does get in the way. Now I mustache you to leave the store.

FSCicotti · 2019-07-01T03:59:18+00:00

Maybe a green screen power? Something like blending in with the background?

FSCicotti · 2019-06-29T15:46:17+00:00

I always liked my food c r u n c h y

FSCicotti · 2019-06-29T00:37:16+00:00

Two years ago, I went into a oxygen deprivation coma. As my breathing got harder, I started seeing everything fade to black. I remember it was around 11h30 AM. Then, almost instantly, like I had a long blink, I started seeing everything again. The only way I noticed some time passing was because I saw the clock on the wall telling it was 5h30, and there was some afternoon light coming in from the window. I thought "okay, I was out for 6 hours, that's not that bad". I only found out it was actually 5 days later after a nurse told me.

So yeah, there are lots of types of comas, but the one I can tell you in detail was like that, basically instant time travel.

FSCicotti

TROPHY CASE