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

Fix detection range setting #3

Merged
merged 1 commit into from Jan 21, 2019

Conversation

Projects
None yet
2 participants
@kostaldavid8
Copy link
Contributor

commented Jan 21, 2019

Hi, I've tried to fix a problem with detection range setting on MH-Z19.

If you sent the original byte sequence for changing range to 0-2000ppm or 0-5000ppm to the sensor, range actually got set to 0-1000ppm. For some reason the bytes indicating the range have to be sent in an different order. I found out thaks to this analysis here: https://revspace.nl/MHZ19#Setting_the_measurement_range.

Also, we need someone to test it on MH-Z19B too, I have only tested this with MH-Z19.

@UedaTakeyuki UedaTakeyuki merged commit a28b34a into UedaTakeyuki:master Jan 21, 2019

@UedaTakeyuki

This comment has been minimized.

Copy link
Owner

commented Jan 21, 2019

Hi, David.

Thank you for your kindly help to test on MH-ZZ19 and fix.
Also the page you've indicated is so good informative for me. Thank you!

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.