Hi I need help to design & advice on making a sensor to switching device, hopefully using some off the shelf components.
This is one project with one control box, sensors & controlled devices are remote from the control point, all separate & max of 1.2m away.
sensor 1) temperature sensor accurate to 0.1 degC, 28 to 40 degC range providing a temperature display with a variable setting on/off point within the range 35 to 38 degC, this set point to operate a heating element & LED
if temperature is below the set value. Switching to be no less than 10 second duration in order to protect the element.
sensor 2) temperature less accurate to act as a backup to the one above operating a second heating element with LED this one will always be 0.5 degC below that of the one above.
sensor 3) humidity with temperature compensation accurate to 2% providing a digital readout, & switching of a humidifier pump & LED at settable values from 45% to 85%.Again no repeat switching until 10 seconds have passed.
Timer 4) time clock with jumpers 2hourley, 4hourley, & 12hourley, to operate a motor
circuit, firstly in one direction then the other using small motors & magnetic micro switches
to stop & reset.
OK now I am not an electronics buff, but I am an electrician, so should grasp the basics, I will not understand abbreviations or electronic jargon, patience will be needed & the ability to source parts in the UK.