The Pulsar Engineering Community Board

Hi everybody,

I'm actually building my own hydroponic system to study the plant grow, and i've wanted to put an EC meter for monitoring the EC level of the water. I've found the one who has been published on Elektor website, and following the link, he bring me here

If someone can share with me the source project (Proteus i guess, i've the V8.0 version) of the EC-meter, because on the shematics published on the Elektor page, some informations are missing, for exemple, i can't see where the VEE rail go, after some retro ingeniering, i've find some pin of the TL074 on this rail but i can't find all the rail.

I need to redesign the PCB shape, because i need to put this on my main PCB.

If somebody have made some improuvement, feel free to share with me

Thanks you in advance,
Maxime

Here it is

Thanks you a lot, i have all i need to build my demo board

If somebody need to open the project, it's a Proteus 8.6 file, so you can download the last Proteus version (demo version) here : https://www.labcenter.com/free-trial/

I don't know what you can design with this demo version but it's enough to open the project and see all informations (PCb layout too).

I will come back later to publish my test result.