design help

I'm currently looking for a solution to a problem I have and I need to create a circuit to later develop into a PCB and these are my requirements: - I need a device to rotate a circle with 8 intervals one interval per day. - I also want a switch to reset the device once it has completed its 8...

For a university project, I am designing and am further required to build a sensor fusion device for soil quality measurement in agricultural soil. The device will measure the volumetric water content (VWC) in the soil, the temperature of the soil and the light levels that the soil is exposed...

Hello! I am trying to design a car shade (the thing you put up in your windshield to block the sun) that is automatic with the press of a button. I have an idea of how it will work and the design, but I am struggling with the circuit. Here is some background: The automatic shade will be rolled...

Hello, I've read something about a rail-to-rail opamp on the internet and I want to design one, just the soft part, and I am not sure if I get some things right. For example: Let's assume that my Supply Voltages are Vss = -5 V and Vdd=5 V In a rail-to-rail op amp I need my input to be anywhere...

Hi, I am currently completing a project and require assistance with the electrical circuit design. Not sure if this is where to ask but currently unsure where else i can ask and I am clueless. I have supplied information below but I may have made mistakes. The components required are: Power...

Looking for some help and guidance on a personal project for my sport. I play underwater rugby, at international level, the referees in this use a cable operated buzzer system. Now this is a pain. I've designed a small(ish) remote buzzer that will remove all cables to the surface. My only issue...