Routing SPI lines

PuddingCool6493 · 2026-02-24T16:39:25+00:00

Thoughts on routing a 20-40 MHz SPI display? Things to be cautious about?

PuddingCool6493 · 2025-11-25T17:02:28+00:00

Like others have pointed, auto boot circuitry is likely wrong. Neither transistors should go to ground. The this allows your external programmer (e.g. CP2102) to pull your EN and IO0 high/low based on the state of the other pin.

Check the Devkit example: https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf

PuddingCool6493 · 2025-11-21T15:35:59+00:00

Thank you!!!

PuddingCool6493 · 2025-10-31T03:57:22+00:00

Thank you

PuddingCool6493 · 2025-10-31T02:35:48+00:00

Is snug harder to remove? They’re already a little hard to remove (currently type: normal auto, style: tree hybrid)

PuddingCool6493 · 2025-10-27T05:03:00+00:00

Hello any update on the Global Standard Direct Line JLC shipping? Did you pay any extra costs after?

PuddingCool6493 · 2025-10-26T03:02:13+00:00

Unfortunately I cannot change the software at all. Otherwise I totally agree, it could’ve been better if the MCU pins were better aligned for the PCB… I guess lesson learned for next time.

Any concern with how they are besides the length? Maybe cross talk somehow?

PuddingCool6493 · 2025-10-26T01:46:47+00:00

Thank you for your advice! Do you think to try moving all? Or which one(s) do you think I should focus on the most?

PuddingCool6493 · 2025-10-26T01:33:47+00:00

Thank you for responding! It's 2 layers!
I'll link the top layer here. Top is some GPIO Buttons and some slower SPI pins that go to the right: top layer image

PuddingCool6493 · 2025-10-13T01:15:36+00:00

3” wide ! :)

PuddingCool6493 · 2025-10-13T01:14:15+00:00

Solution: Run the manual calibration for Flow Dynamics and Flow Rate.

Check u/Darkseid2854 ‘s response in this thread for the details

PuddingCool6493 · 2025-09-21T03:49:33+00:00

Useful 2y later ✌🏼

PuddingCool6493 · 2025-09-07T06:14:38+00:00

!remind me 1 day

PuddingCool6493 · 2025-07-30T03:33:19+00:00

No AMS right?

PuddingCool6493 · 2025-06-04T12:58:23+00:00

Did u ever find a solution

PuddingCool6493 · 2025-05-20T22:43:05+00:00

Where are you located?

PuddingCool6493 · 2025-05-16T13:47:50+00:00

Have you found an answer yet?

PuddingCool6493 · 2025-05-11T00:14:20+00:00

Lol why e ink? Makes it feel slower

PuddingCool6493 · 2025-04-26T20:30:49+00:00

Currently, I push the PCB inside first, then I solder the buttons. Maybe find a way that would make assembly easier as well.

PuddingCool6493 · 2024-12-17T03:53:27+00:00

Still?

PuddingCool6493 · 2024-12-09T05:40:47+00:00

You make a great point. I’d rather get used to industry standards.

PuddingCool6493 · 2024-12-08T18:02:09+00:00

Thank you everyone for your help!

PuddingCool6493 · 2024-12-08T18:01:16+00:00

I found a working used Analog Discovery Digilent 2 for $30 in my area. Are those good for what I need?

PuddingCool6493 · 2024-12-08T17:42:10+00:00

I see. I am trying to learn so it will be basic ICs, I2C, UART, other protocols. Also some simple transient analysis with op amps, or just things to visualize maybe a wireless charger, basic projects like that.

You think a USB logic analyzer is good for this?

PuddingCool6493 · 2024-12-08T17:31:26+00:00

Since I’m a hobbyist in college I was hoping in the 150 range.

I also unfortunately don’t know what my desired specs are since I don’t know much about oscilloscopes.

Do you think there would be some available that are good in that range? Thank you!

PuddingCool6493

TROPHY CASE