GitHubBecome a leader in the IoT community!
Join our community of embedded and IoT practitioners to contribute experience, learn new skills and collaborate with other developers with complementary skillsets.
Step 1 of 5
CREATE YOUR PROFILE *Required
Step 2 of 5
WHAT BRINGS YOU TO DEVHEADS? *Choose 1 or more
Connect & collaborate 🤝with other tech professionals
Learn & Grow 📚
Contribute Experience & Expertise 🔧
Step 3 of 5
WHAT'S YOUR INTEREST OR EXPERTISE? *Choose 1 or more
Hardware Design 💡
Embedded Software 💻
Edge Networking ⚡
Step 4 of 5
Personalize your profile
Step 5 of 5
Read & agree to our COMMUNITY RULES
- We want this server to be a welcoming space! Treat everyone with respect. Absolutely no harassment, witch hunting, sexism, racism, or hate speech will be tolerated.
- If you see something against the rules or something that makes you feel unsafe, let staff know by messaging @admin in the "support-tickets" tab in the Live DevChat menu.
- No age-restricted, obscene or NSFW content. This includes text, images, or links featuring nudity, sex, hard violence, or other graphically disturbing content.
- No spam. This includes DMing fellow members.
- You must be over the age of 18 years old to participate in our community.
- You agree to our Terms of Service (https://www.devheads.io/terms-of-service/) and Privacy Policy (https://www.devheads.io/privacy-policy)
By clicking "Finish", you have read and agreed to the our Terms of Service and Privacy Policy.
While working on this project, I observed some things with my bench power supply, my st link, and my usart to ttl converter. The bench power supply i am using needs to be changed, the display may be showing 14v but when I measure the voltage at the connected wire, I get around 13v and also it does shock a little occasionally. Then for my st link when it’s connected to my laptop and connected to the board, I’m working on, when I send data from my board via usart to ttl converter to my laptop, the majority of the data is garbage, but once I remove the st link from my laptop, the data is readable and accurate. I decided to power the board directly with a battery, and all the issues above disappeared. I think the power supply has worked its money. Can anyone suggest a good affordable power supply for me, please?
I have finally fixed the issue as to why I could not get a current reading from my ac appliances. There was supposed to be a pull up resistor used to pull up my non-inverting pin of my op amp to 3.3v. I used a smaller value of 5.1k instead of the 22k then I also failed to multiply my value by my op amp gain on my firmware. I fixed it and I am finally able to measure my current, next thing to do is to fine tune it, to get a more accurate value. I had to use another board to try and figure out where the issue was coming from
0VID_20250424_072128.mp4
CONTRIBUTE TO THIS THREAD