Please help we have a pump that we are trying to stop at a conductivity threshold of 400. The pump runs but it will not shut off. I am very new to this and am trying to help my student. Thanks [17375194812371410019993475305188] [17375196131096371527182248496837]

Always show us a good schematic of your proposed circuit. In the Arduino IDE, use Ctrl T or CMD T to format your code then copy the complete sketch. Use the < CODE / > icon from the ‘posting menu’ to attach the copied sketch. What is the transistor part number ?

I agree with @LarryD , in order to help we need to see your schematic, your actual wiring, and your code. The code and the schematic are most important. At first glance though, it looks like your code calls for an analog reading from A0, but the photo of your setup doesn't have a wire attached to A…

Sorry, but the schematic is not readily readable to me. The best thing you can do for your student, especially if they plan to continue working with electronics, is to teach them how to create a proper schematic. A good CAD (Computer-Aided Design) program, like KiCad, is available for free download.…

[image] How to provide an easy to read schematic and how not Tutorials This tutorial shall show how to provide an easy to read schematic of your wiring and how you should not post fritzing pictures don't post frizzy-pictures like that! if you look at this pic…

Im doing the same project and encountering the same problem. The Arduino won't stop at the threshold. Here is the code: @LarryD @anon51466201 /* * Artificial Pancreas model code * */ int pumpPin = 11; // pin used to control pump int pumpSpeed = 255; // pump speed, value between 0-255 int c…

[image] essa21288: Im doing the same project and encountering the same problem. And you are not showing a schematic of your project, either. So you will get the same help.

I sat in on a couple of classes like this where students are learning Arduino for the first time, and I've seen a couple of mistakes that are the most common, which I will try to outline here. First of all, this is very simple code and it probably works fine, so the question is, why is it not doing…

I hope #1 has been ruled out: conductivity = analogRead(A0); // get conductivity reading Serial.println(conductivity); @new2thegame @essa21288 are the printed numbers plausible? a

I'm sorry, my knowledge on Arduino is zero to none. My schematic is very messy and I don't even have the correct color wires. Here is a photo but I understand it you are unable to comprehend what's going on (I definitely don't). I appreciate any help I can get, thanks! [IMG_0763]

The sensor is reading the values correctly. The only issue is that the motor won't stop at the threshold value.

Pump isn't stopping at the treshold

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StefanL38 January 22, 2025, 6:03am 5

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Pump isn't stopping at the treshold

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