jimbobsimmonds
New Member
Hi all... ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Im in a rush so let me just explain my task is to build a level sensor... i have designed a circuit (see below) which uses a capacitive sensor which interfaces with a PIC (using VDC and the ADC) and LCD to display the level... however, the voltage i am getting is not of the linear response i was hoping for and is quite a significant curve...
Any ideas on how i can achieve a more linear response?
Thanks!!!!!!
P.S the values for caps and res are not neccesarily final so you can take them with a pinch of salt ;-)
Im in a rush so let me just explain my task is to build a level sensor... i have designed a circuit (see below) which uses a capacitive sensor which interfaces with a PIC (using VDC and the ADC) and LCD to display the level... however, the voltage i am getting is not of the linear response i was hoping for and is quite a significant curve...
Any ideas on how i can achieve a more linear response?
Thanks!!!!!!
P.S the values for caps and res are not neccesarily final so you can take them with a pinch of salt ;-)
![303-circuitdiagram1.png](http://static.electro-tech-online.com/imgcache/303-circuitdiagram1.png)
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