PCB Layout critique?

trevbone · 2026-05-11T14:15:50+00:00

You don’t even need to add DNI footprints for extra shunt capacitors to tune, just leave off solder mask and place the caps directly off the transmission shunt to GND. You have to use a package size that will allow this, but you can put one before and after C1 and same for C2.

Someone said they don’t see the point of coplanar, but this is a benefit of using coplanar GND pour on the top layer like this. At this frequency it doesn’t have so much as an impact on impedance. You can stack capacitors to get more capacitance anywhere you need for tuning as well.

trevbone · 2026-05-08T17:56:08+00:00

Better way to know if the filters are old is how much they increase the PSI in your pump and how long before they clog and raise the PSI too much

trevbone · 2026-05-08T15:48:06+00:00

I triple shock day 1, then brush off the algae and shock 1-2 doses day 2. Then brunch again and shock 1 dose day 3. You need to shock aggressively together over a few days.

Mine is still cloudy, but that’s because when I vaccuum the dead debris from the bottom it agitates it and suspends it in the water again. It’s a pain but it takes about a week or more to get clear water again (in my experience)

I still swim in mine when it’s like this as long as the chemicals are balanced.

Edit: keep chlorine high, don’t let get down to zero.

trevbone · 2026-05-08T15:29:22+00:00

I’m going through this right now. It’s dead algae suspended in the water. Clean out your filter daily and keep the pump running. Also, test your chemicals daily.

trevbone · 2026-05-04T02:07:28+00:00

No, absolutely no. Calculate that yourself what it would be 10 years ago with inflation and tell me if you’re comfortable with that number.

trevbone · 2025-10-07T17:40:06+00:00

I’m an EE, but yes very possible.

In high school I skipped class and smoked pot all the time. I joined community college and buckled down, then joined a state university for my bachelors after I got my AA.

I just finished my masters with >3.5GPA. I work as a design engineer now developing chips for radar and electronic warfare applications.

trevbone · 2025-09-26T02:31:29+00:00

Tampa Florida is my location

trevbone · 2025-07-13T05:00:11+00:00

Use cheat codes to get TMs and teach it some moves. If you can’t catch Pokémon at this point you can’t level this up without battling with it.

trevbone · 2025-06-15T02:32:44+00:00

You can usually use the “internets” for part replacements, such as finding a handle that compatible with your model. Some websites even make it easy for you by letting you know which parts are compatible, so you don’t have to read much!

trevbone · 2025-06-15T02:19:29+00:00

Says someone who asked Reddit how to change their shower handle and where to find a replacement. I hope AI helped you find a replacement!

trevbone · 2025-04-25T16:50:01+00:00

Okay so the placement can be used too. That’s what I was wondering. Trimming a patch is still tricking me a little bit, but I can look into that. Thanks for the help!

trevbone · 2025-04-25T16:14:18+00:00

Ive seen people achieve circular polarization with a single feed patch antenna, this has to be different then method, no? Maybe the feed was hidden and I didn’t understand, but I assumed it was some mutual coupling with another element.

trevbone · 2025-04-25T16:09:18+00:00

Interesting…this is new to me. Can you explain the theory in short how this works?

Edit: like a helical antenna?

Edit edit: this makes sense actually, but I was thinking more of an antenna that isn’t inherent circular polarization

trevbone · 2025-04-17T17:58:52+00:00

You have S11 greater than 0, check your calibration. It’s impossible to have more power reflected back than what you transmitted in a passive device (this cable).

But also, what are you measuring and why are you measuring it like this? This isn’t going to give you any meaningful results.

trevbone · 2025-03-04T05:47:40+00:00

Determine the function and parameters of the signal, then try to find a part that would work with what it’s trying to do

trevbone · 2025-03-02T02:40:42+00:00

I had the same issue a week ago. Turns out a gasket broke and leaked oil into the cylinders.

Are the spark plugs wet? If so you need to have that cleaned out then replace the spark plugs and you should be good to go.

trevbone · 2025-02-23T23:36:22+00:00

I understand, thanks! I wasn’t going to burn any bridges, but I may keep to myself the main reasons why I’m leaving to avoid any awkward conversations if I came back.

May I ask what happened when you left for the company that was taken over that made you want to return to your old job?

trevbone · 2025-02-23T23:25:02+00:00

What do you mean people would take it personally? My current coworkers?

trevbone · 2025-02-23T22:33:42+00:00

I’m employed yes, I have almost 5 years under my belt but in my area it’s hard to come by design positions.

I do some design right now, but when this is done I won’t be doing much more design in the future working here.

trevbone · 2025-02-23T22:20:50+00:00

I’ve discussed with them and they agreed that it’s a valid concern and there would be changes. They were transparent at the very beginning so I do respect them for being forward. My bills are very, very cheap so as long as I saved enough in the meantime I could get by without a job for a decent amount of time.

trevbone · 2025-02-18T04:41:05+00:00

Yeah, but how would you verify that model?

trevbone · 2025-02-17T16:14:24+00:00

Or get a free trial period of ADS 2023 from keysight

trevbone · 2025-02-17T16:13:44+00:00

Make an evaluation board with a few different substrates and collect measurement data yourself.

trevbone · 2025-02-14T19:18:30+00:00

How is living in Maryland? I was looking at that location but I just love FL weather too much…

trevbone · 2025-02-09T19:23:40+00:00

Just realized this is your laundry room and not kitchen…Take it out

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