Science Buddies: "Ask an Expert"

Posted on behalf of student/family
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Project: https://www.sciencebuddies.org/science- ... l-pancreas


Hello,
My daughter saw a YouTube on MAPSP and wanted to do a same project for her school and she’s in 5th grade. My wife bought all of the necessary parts and I’m having trouble helping my daughter set it up to work. I saw a pdf file for pump but in the same page the actual hook up with all of the banana clips, volt meter and pump links ok completely different. PLEASE help us with a diagram where it CLEARLY show how all of the hookups are done vs the picture on the pdf which is blocked by either a container or the volt meter or cut off from where all of the banana clips would go.
Parts purchased from Home Science Tools and Adafruit.
Thank you,
Peter

Hi, to build the circuit, please refer to Figure 6 in the project procedure:

https://www.sciencebuddies.org/science- ... l-pancreas

This is a standard breadboard diagram that shows a clean top-down view of a circuit. As you can see in Figure 7, the "real" circuit can be messy with lots of wires everywhere.

The software we use to make the circuit diagrams does not draw alligator clips. However, some parts, such as the pump, cannot be connected directly to jumper wires - you must use an alligator clip to connect the pump to a jumper wire, then plug that wire into the breadboard. The same applies to the conductivity sensor and the multimeter probes.

Also please note that this is an 'advanced' project on our site, which is intended for high school students, so it will be difficult for a middle school student. You can read more about our difficulty levels here: https://www.sciencebuddies.org/science- ... difficulty