Develop a php/mysql highcharts with two charts first for one vale (analog). Other for Temperature one and temperature2.
Time scale on Y is essential.
Recent Values check if they are correct, problem with limit 150 should be more then 600.
Tooltip, Hour and time on DOT.
Group by hour will limit the query. Group should be only on large queries.
google api [url removed, login to view]"></script> change to ower server
highcharts on owner server
Something should indicate that the chart is still loading.
Autorefresh should exist as optional.
Chart hours don’t match database hours.
End time depends on Start time because the number of points seem to be constant (60) should be fixed with time rates
Chart scale range should have two modes: Automatic adapting the scale to the displayed values, as it is now, and Predefined, in which the scale start and end values are fixed, ie Voltage from 0 to 32V.
Where there is no data or invalid in a timelime chart it should present 0 (zero) and continue line on values