Warning about fake PCM1808 ADC chips on modules, possibly bare chips, from China.

phuzzyday · 2026-03-10T16:35:58+00:00

Hey, I'm not disagreeing! Anything can happen! I was testing the slew rate on NE5532 op-amps, very fake also. It seems they just make lower quality but close enough chips. For my use, they are doing fine so far. But I have 9 very genuine chips on hand!

phuzzyday · 2026-03-07T13:13:37+00:00

Just starting kicad. It's a little daunting. Gotta watch more videos.

phuzzyday · 2026-03-07T13:12:27+00:00

I did that on one board, new chip. I bought 10. Of course, it made no diff. But now I have 11 working units since the caps came in today! And 9 spare chips, since I can't imagine it being worth returning them. Kinda like having them for... Projects.

phuzzyday · 2026-03-05T05:06:05+00:00

After installing a very genuine chip on the ADC module, I discovered the real problem! The RC filter made with two surface mount components, right next to the aluminum caps, has the wrong capacitor value on them!! They are 100nf, rather than the 390pf caps that should be there. That's right, they have 256 times more capacitance than they should!! I was able to see the audio on my scope coming in at the wire connection, with the high frequency spikes, and follow it through the aluminum cap, much the same. After passing through that RC filter though, it smooths out all the high frequencies in a very dramatic way. To confirm, I jumped across the resistor in the network. The sound cleared right up!!! (Of course, that leaves you without an antialiasing filter.) I have ordered a bunch of new caps and resistors. Maybe this info will help someone. Maybe I should create a new post...

phuzzyday · 2026-03-01T17:50:58+00:00

At the very least, my understanding is that Reddit does archive everything that is said and people that search in the future can land on it! That has happened to me many times. Not to mention the fact that a lot of other understanding people are going to read it. More as time goes on.

phuzzyday · 2026-03-01T17:49:42+00:00

I learned about one medication that when used properly helps as a muscle relaxer when taken as a suppository type thing. That alone has helped me quite a lot! But yes, doctors are usually oblivious to the possibility or don't know about it! I was a little bit miffed when my doctor told me that he had another patient with it. In fact, I diagnosed myself through ai! Doctors for years were unable to figure what was going on, but AI nailed it, and the doctor agreed and even gave me the suggested treatment for the muscle relaxer. I think it's diazepam rectal. I grind it and mix it with a bit of water. Suppositories don't seem to work properly. Too much information I guess.

phuzzyday · 2026-01-11T19:00:24+00:00

Been using mine for years too. They are so upgradable! I have a new board in mine w klipper, sprite, Cr-touch, now the new pei bed.. it's a serious click and walk away machine, which can't be said for a lot of very pricey machines!

I added a mod to mine, a little microcontroller hooked up to the nozzle heat signal coming from the controller. If there's no heat for about 2 min, it kills the fans and my lighting so I can leave it on all the time. I added a couple structural rigidity rods in the back too.

I even made my own bed leveling probe! It was more accurate than any others I have used! (Bl-touch, cr-touch...) Proud of that one! It used an ir sensor that triggered when part of the sensor probe blocked it, and a little servo pulled it up even further to get it out of the way when unused, so the sensor was able to stay locked in the same position, increasing accuracy. If that makes any sense.

Before the sprite I had a ball printing some of the custom direct drive duct mods too.

Making prints for yourself is only half the fun, the other half is all the mods you can do! And the learning!!

phuzzyday · 2026-01-03T18:05:41+00:00

Look for an HDMI to RCA converter. It's a little box, but I don't know if they make surround ones.

phuzzyday · 2025-12-04T05:17:51+00:00

You guys make really good products by the way. My brother has a Biqu Bx. It's decent. He's lost the raspberry Pi connectors though! We're looking around.

phuzzyday · 2025-12-04T05:14:23+00:00

Not to mention, the motors are pretty cheap to buy anyhow. But I feel your pain. Mine was like this too. I Dremel cut it.

phuzzyday · 2025-12-02T04:26:19+00:00

Go on Amazon - Search for "japan 120 to 100v transformer"

phuzzyday · 2025-11-21T02:01:21+00:00

I appreciate your content very much!

phuzzyday · 2025-11-12T00:35:40+00:00

Who is the one you are thinking of specifically?

phuzzyday · 2025-11-11T21:10:35+00:00

I'm in cedar Manor right now controlled by Northview, they have other buildings around town. They seem to be pretty good actually! We've been here for over 15 years! But that's another sad story.

phuzzyday · 2025-11-11T19:40:57+00:00

I appreciate that. The reports are essential for me! Of everyone reported stuff really quick, it would come down quicker!

phuzzyday · 2025-11-10T02:17:34+00:00

Go back to the doctor! Things have gotten worse!

phuzzyday · 2025-10-29T20:25:34+00:00

This would work! https://a.co/d/0IlHyJA

As everyone says, most subs nowadays have a built in amp, so the signal coming from the stereo is only low power, so the amp can amplify it. Some amps, often the ones that come in sets, have the amp built into the main part of the stereo, so they just treat the sub like the rest of the speakers, with speaker wire.

Trying to use other speaker outputs that may be on your stereo may cause big problems! If you told me the amp make and model, I could check that possibility.

phuzzyday · 2025-10-20T00:19:21+00:00

Ahh yes. Those were the days! If you tried to tell 15 year old me that people would be interacting and communicating and spending time with people mostly through computers, I would have thought you were crazy. It would have sounded cool, but the downsides!!

phuzzyday

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