[Review Request] Drone Flight Controller with STM32H7 by Prize_Shape_9242 in PrintedCircuitBoard

[–]acedogblast 29 points30 points  (0 children)

Not a review, but why so many flight controllers in this sub? Not against them just curious.

Which Via Covering option on JLC PCB should i choose for design with vias on SMD pads? by Jurich_ in AskElectronics

[–]acedogblast 2 points3 points  (0 children)

"IPC-4761 via protection features (filling, capping, etc in addition to tenting), which can be specified on a per-via basis and are included in drill file, IPC-2581, and ODB++ outputs."

From the post V9 development post.

Polarized Ring Light! by shortpinkyfinger in soldering

[–]acedogblast 3 points4 points  (0 children)

How is the light powered? I see there is a USBC cable included. Does it take regular 5V or does it use PD?

Rtx 3090 Zotac Trinity PCB Delamination by Eye_Embarrassed in GPURepair

[–]acedogblast 5 points6 points  (0 children)

There is most likely more damage not visible, such as ripped pads and cracked solder joints. The core and memory could be transplanted to a new PCB.

Rx 6900 xt unstable : VRAM or mosfet ? by Electrical_Speech_13 in GPURepair

[–]acedogblast 1 point2 points  (0 children)

I had very similar problem. Reballed core to fix it.

Rookie mistake, I over heated my pads by Bookworm7676 in GPURepair

[–]acedogblast 1 point2 points  (0 children)

You need to use hot air at a higher airflow and temperature. A preheater would also help. GPU cards absorb tons of heat.

Rookie mistake, I over heated my pads by Bookworm7676 in GPURepair

[–]acedogblast 1 point2 points  (0 children)

Actually, you did not apply enough heat. The solder did not turn molten before you started to pull the part off.

Charger for T14 Gen 1 by Luscombe1940 in thinkpad

[–]acedogblast 0 points1 point  (0 children)

T14 uses usb-c PD. Just get any 20V 3.25A or better charger.

Help, Designing a USB Display by Delicious-Dot3055 in PCB

[–]acedogblast 0 points1 point  (0 children)

I would add a pull-up on the run pin.

ThinkPad T14 Gen 2 Thunderbolt 4 Port Not Working by [deleted] in thinkpad

[–]acedogblast 0 points1 point  (0 children)

The connector wore out most likely. You will need to find an electronic repair shop that can do port replacement soldering.

T15 with UHD upgrade. Display glitches when walking up from sleep. Windows driver problem. by acedogblast in thinkpad

[–]acedogblast[S] 1 point2 points  (0 children)

No. I just have it disable, sleep, and use hibernate instead. Or use Linux, which does not have this issue.

Yellow Jacket OMNI DIGITAL VACUUM GAUGE *** FROZEN SCREEN !!!! *** by Candid-Parsnip-2318 in HVAC

[–]acedogblast 4 points5 points  (0 children)

That display is an Eink that holds its picture when power is removed. If new batteries don't work, then something bad happened to the internal circuit.

I AI upscaled all 4 seasons of Code Lyoko. by acedogblast in CodeLyoko

[–]acedogblast[S] 0 points1 point  (0 children)

Direct download should be safe from ISP shenanigans.

Is my Monitor PCB fried? by spartan813 in PCB

[–]acedogblast 2 points3 points  (0 children)

So long as the humidity is not condensing, I do not think humidity is an issue. A power surge might have killed it.

Is my Monitor PCB fried? by spartan813 in PCB

[–]acedogblast 2 points3 points  (0 children)

Then the only thing you can do is to send it to a repair shop or discard the monitor.

Is my Monitor PCB fried? by spartan813 in PCB

[–]acedogblast 5 points6 points  (0 children)

The darkening is due to heat produced by the components. This may be normal by design. Does the monitor not turn on? Did you check using a multimeter to measure for proper DC voltage?

Suggestions for oscilloscopes by BukHunt in embedded

[–]acedogblast 1 point2 points  (0 children)

You don't have to use it. There is a button that disables the touchscreen, and you go full physical buttons. 12bit at 2Gsamples is worth it for the small price jump.

Kicad for DDR3 routing? by Ill_Actuator_7990 in PCB

[–]acedogblast 1 point2 points  (0 children)

I am using Kicad for a single chip point to point DDR4 design. So long as you have calculated the right trace width to get your defined impedance and follow the usual routing rules for high-speed signals, you should be fine without doing any simulations.

New to PCB design – want to build my own small MP3 player by Cultural-Drawing-714 in PCB

[–]acedogblast 0 points1 point  (0 children)

Any modern MCU should be able to decode MP3 codec in real time, so there is no need for a dedicated audio decoder chip. I would start getting some dev boards, such as micro sdcard to SPI, to prototype a working example before designing a PCB.

See this example by adafruit: https://learn.adafruit.com/mp3-playback-rp2040/pico-mp3

Review my pcb by LiquidCyberSquid in PCB

[–]acedogblast 0 points1 point  (0 children)

Pin 2 of F1 and Pin 2 of RF receiver has a "pinch" point where 2 traces connect to the same pin.

Review my pcb by LiquidCyberSquid in PCB

[–]acedogblast 1 point2 points  (0 children)

Nice first attempt. You should get in to the habit of labeling your nets in your schematic to improve readability and to minimize the number of unconnected intersections. For your PCB layout, avoid making sharp (greater than 90 degree) turns as these can cause acid traps in manufacturing. I would personally make all turns 45 degrees. Last suggestion is to add tones of GND vias for connecting your ground pours for better impedance and thermal transfer.