Hello to everybothy,
I need some advises about how can I read RH of this kind of sensors. The sensor i´m using is hch 1000, and datasheet is here ->
http://sensing.honeywell.com/index.cfm/ci_id/146573/la_id/1/document/1/re_id/0
I´m using a ne555 astable mode, and i have an output square that changes its frequency as long as the sensor change his capacity.
My question is, how can i convert this range of frequency to an dc voltage? Because i´m planning to use this dc voltage to an analogue input of a microcontroller.
What do you advise?
Best regards
I need some advises about how can I read RH of this kind of sensors. The sensor i´m using is hch 1000, and datasheet is here ->
http://sensing.honeywell.com/index.cfm/ci_id/146573/la_id/1/document/1/re_id/0
I´m using a ne555 astable mode, and i have an output square that changes its frequency as long as the sensor change his capacity.
My question is, how can i convert this range of frequency to an dc voltage? Because i´m planning to use this dc voltage to an analogue input of a microcontroller.
What do you advise?
Best regards