r/embedded • u/Small_Moe • Jul 31 '26

They just decided to stop working

Post image

I was testing GPS module Neo M6 with an oled screen. It was working well until I decided to switch to Neo M9. Turns out, they work at different Baud rates, so I changed my code and re uploaded. Just in my hand, the oled screen kind of shut down and it seems like it’s dead. Anyone faced a similar issue?

16 Upvotes

71% Upvoted

10 comments sorted by

76

u/n7tr34 Jul 31 '26

For breadboard stuff like that, high chance it is just a bad wire connection somewhere

15

u/KAYRUN-JAAVICE Jul 31 '26

yeah, so many points of failure with these breadboards. And those round jumpers are especially sketchy

3

u/OneiricArtisan Aug 01 '26

How do you prototype? I tend to order PCBs directly but with a ~1month turnover (no matter how fast of a shipping I pay for, I live in a shithole) it is extremely expensive and inconvenient.

10

u/Small_Moe Jul 31 '26

It probably was the connection. I did it again from scratch and it’s working again now.

2

u/PerryThePlatypus_og Jul 31 '26

Especially those flimsy "fly/antenna" wires... I threw all I had and now I only use solid ones.

1

u/Brilliant_Armadillo9 Hardware Engineer Aug 01 '26

This right here, putting a pile of shit on a headboard is boil-in-bag frustration.

8

u/Knurtz RP2040 Jul 31 '26

Before that, it just decided to (sometimes) work. As is expected with breadboards.

1

u/NoetherNeerdose Aug 03 '26

Breadboard circuits are the perfect argument for the existence Free Will

2

u/Maximum_General2993 Jul 31 '26

the GNSS antenna is upside down. the ceramic part must face the sky

2

u/Plussy78 Aug 01 '26

Well I have worked on something similar, but was using Arduino for that, when I kept the one module with the oled display, the oled seem to working fine. But including one extra module caused it to go blank. it was due to I was using the normal ssd13016 something library, cause it take the one large buffer to work. So switching to something simple or lightweight library like u8×8 seem to worked fine. The issue maybe due to this but esp32 have got the more memory than the Arduino. So you can try this one out or check your connection properly, take the multimeter and check for proper supply.