Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Bad CYD+CC1101 Schematics #802

Open
GthiN89 opened this issue Feb 9, 2025 · 2 comments
Open

Bad CYD+CC1101 Schematics #802

GthiN89 opened this issue Feb 9, 2025 · 2 comments

Comments

@GthiN89
Copy link

GthiN89 commented Feb 9, 2025

Describe the bug:

Mistake in wiring can cause floating pins, in my case CC1101 GPIO1
Steps To Reproduce:

  • Device used: Just start implement oldschool radioamateur soldering - circuit building techniques, im not able to give you exact steps, this just happens... You can like have it working in one build, and have this "bug" in another one...

Expected behavior:

Do not get false SubGhz signal reception every second.
Actual behavior:

Constant SubGhz false signal reception
Additional context / logs:

Solution is pretty easy... You just fallow basic digital circuit rules (im not some expert, i started MCUs like 8 months ago, i know like just basic rules like this one), so you do connect all unused gpios to the (common) ground. Just like this....
Problem solved.... Pleasse update your wiring diagrams ;-)

Image

@Metinsz
Copy link

Metinsz commented Feb 10, 2025

tried it with connecting the unused gpio to the other gnd on my m5stick but i still get constant subghz signals every second

@GthiN89
Copy link
Author

GthiN89 commented Feb 10, 2025

you can try ground those circles coated with tin, and outher connector of anthena. do you have something what can introduce lot of noise? Like step up converter?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

2 participants