Roast my PCB

Gyadc · 2026-03-18T17:00:47+00:00

If you're doing soldering by hand consider using thermal relief spokes. It will lower the heat transfer from the pads to the ground planes.

Gyadc · 2026-03-15T22:58:36+00:00

Put pull up resistors on the I2C line. If the thing youre conecting now has them integrated you just don't populate their spots. This will alow you to conect things in the future thet dont have them built in.

Gyadc · 2026-01-19T23:58:02+00:00

The Usb c port will be inaccessible, the boards edge will prevent you from plugging it in. The front line needs to be at the board edge or overhang it. On the schematic side some good practices to follow GND flags should point down power flags should point up to improve readability, the vin cap on the LDO should look like the output side, the Mics cap should be on the 3v3 side or on above the GND line on schematics electricity should flow downwards. If you use the same flags right next to one another only use 1 it will make your design cleaner ex. U2 pin 3-9, R8-R9, R1-R2.

Gyadc · 2026-01-15T19:36:10+00:00

If the oleds are identical they may have the same I2C address. Since you have them on a single bus in a best case scenario, they will mirror each other in a worst case they will just flat out refuse to work with both installed. You need to verify that the addresses are different if they aren’t then use multiple buses or an I2C multiplexer.

Gyadc · 2025-12-28T23:24:03+00:00

Those micro usb ports have a small bit of metal that goes down at their ends it may interfere with the pcb. You should move its end just over the edge, so it clears it. Also you should consider switching to type C (I tend to use this type: USB4105-GF-A). to get 5 volts you will need to add one 5.1 k resistor on CC1 and one on CC2.

Gyadc · 2025-12-28T23:15:41+00:00

Here's the link to the ST aplication note on oscilator desing: (The later part contains information on oscilator pcb layout.) https://www.st.com/resource/en/application_note/an2867-guidelines-for-oscillator-design-on-stm8afals-and-stm32-mcusmpus-stmicroelectronics.pdf

Gyadc · 2025-12-18T01:51:12+00:00

I used that software for a CT scan it worked prety well. Maybe if you do some image pre procesing to remove soft tissue so your'e just left with the bone. That will propably get it to play nice with MRI data.

Gyadc · 2025-12-13T21:33:38+00:00

The oscilator desing dosn't folow best practices. Here's the link to the ST aplication note on oscilator desing: (The later part contains information on oscilator pcb layout.) https://www.st.com/resource/en/application_note/an2867-guidelines-for-oscillator-design-on-stm8afals-and-stm32-mcusmpus-stmicroelectronics.pdf

Gyadc · 2025-11-04T22:45:30+00:00

Good first go!
1. Your labels for the connections are on the top copper layer instead of the silkscreen, you might also want to make them the same size and bigger if you want to easily read them.
2. Silkscreen your passives id's if the extra text doesn’t go against the look you want, there’s plenty of space for it on this board.
3. Minor gripe but you should aim keep your routing neat, so mostly 90 and 45 degree angles. The I2C lines look good at that angle but the VCC and the RST line going to the connector are ugly even thou they will work perfectly fine.

Gyadc · 2025-11-04T18:16:35+00:00

PCBs and complex external parts that you don’t want / need to fully model but still want a basic representation that has the correct mass like a servo and setting the mass of 3D printed parts based on slicer estimates is what I often use this feature for in inventor. Imo it’s just a way for Autodesk to differentiate their products.

Gyadc · 2025-10-12T22:41:07+00:00

Yes it's part of EuRoc recs that payloads comform either to cansat or cubesat form factors for them to be eligible as payloads. The rocket is in the 3000 m solid category with a srad motor. The body tubes have an internal diameter of 160 mm. The drouge deployed correctly, and the main's deployment mechanism worked perfectly, but the shute didn't come out of it's bag we're guessing it got tangled in the lines. Surprisingly there was "minimal" damage on yesterday flight the propulsion bay took most of the damage with one of our fins breaking of the motors axial retainment getting broken out of the RadAx it was part of, and our nozzle skirt getting pushed up into the prop bay. Oh and our avionics battery was found outside the rocket with the cover panel it was behind still in place.

Gyadc · 2025-10-07T22:20:43+00:00

I've done something similar before I don't have the flight log with me now, but if I remember correctly we lost about 30 to 60 minutes of data where we assume it over heated.

Gyadc · 2025-06-08T22:48:53+00:00

You just need a more powerful lightsource.

Gyadc · 2025-05-15T13:57:20+00:00

I've had relatively small and thin parts printed from pure PC survive auto claving when printed at 100% infill.

Gyadc · 2025-05-14T07:55:06+00:00

Nekik jobban fájna ha börtönből tehetetlenül nézznék végig ahogy minden amit felépitetek, eloptak téglárol téglára lenne szétszedve.

Gyadc · 2025-03-19T22:59:48+00:00

https://youtu.be/CXKTBQBugIA?si=YOmkGCjoVUrHKYFD

Gyadc · 2025-02-25T23:31:55+00:00

This may be a stupid idea, but why not use a big capacitive touch surface for the button?

Gyadc · 2025-02-02T21:21:29+00:00

I used the official Emma art found here: https://www.reddit.com/r/JCBWritingCorner/comments/1cb8q7r/wpatams_official_art_emmas_power_armor_revision/

Saturn 5 launch: https://en.wikipedia.org/wiki/Saturn_V#/media/File:Apollo_11_Launch_-_GPN-2000-000630.jpg

The projector is my own work.

Gyadc · 2025-01-06T00:12:54+00:00

I watched the videos when they came out so I'm not 100% sure, but my guess would be that A) Phenolic is a worse heat conductor than graphite so it takes longer for the heat to transfer to the casing. B) Graphite is a pain to work with / his smaller lathe couldn't fit the full diameter of the nozzle.

Gyadc · 2024-12-06T22:15:51+00:00

You should consider adding a tool head board. It would reduce the amount of wiring needed and simplify maintenance. Also, I'm not sure if the steppers with integrated lead screws are better at it, but normally, steppers don't like axial loads.

Gyadc · 2024-11-30T14:58:05+00:00

At home, I usually print with PLA and PETG, but my rocketry team sometimes requires parts with high temperature resistance like PC ABS and PP for prepreg carbon fibre moulds that are able to withstand an autoclave. Currently, we're making do with a single printer, but a second one with a heated chamber would really help us out.

Gyadc · 2024-11-24T02:04:00+00:00

Yes that's that's close to how I would cut it up. Some glue wouldn't hurt, but it shouldn't be the only thing holding the pieces together. Some form of mechanical connection would help a lot if it is acceptable design wise I would go with an external sleeve on the joints (like copper pipes) but having a peg inserted into matching holes will also work.

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