Skip to content

Update JsonCommand.md #211

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.

Sign up for GitHub

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

Merged
vitotai merged 1 commit into from
Jan 13, 2020
+11 −1
Merged

Update JsonCommand.md #211

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 11 additions & 1 deletion doc/JsonCommand.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -57,9 +57,19 @@ and send.
`U{i:0,j:0.36}`

where **0** is the **Device Slot** that is assigned to the sensor during device setup, and **0.36** is the adjustment to the sensor.

To view current calibration setting, issue a single character

`h`

and send.

The respons is similar to this:
`{"i":0,"t":1,"c":1,.....,"a":"28BE07Dxxxxxxxx","j":0.00}`
"i" is device index, and "j" is the calibration value.

## A note about PID control
The fridge temperature is controlled with PID. The fridge setting = beer setting + PID. The proportional part is linear with the temperature error. The integral part slowly increases when an error stays present, this prevents steady state errors. The derivative part is in the opposite direction to the proportional part. This prevents overshoot: it lowers the PID value when there's 'momentum' in the right direction.

***
[Index](index.md)
[Index](index.md)