Ask an Expert (Page 55)

Question about alternate MOSFET and slight alterations to a project on this site

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Question about alternate MOSFET and slight alterations to a project on this site Question about alternate MOSFET and slight alterations to a project on this site I'm attempting to make a simple audible compass for a blind friend of mine. Using the ability to sense the color red to play a sound when the compass is facing North. Using this project Is It Ripe Yet? Build a Circuit to Detect Ripe… Read more

Mini Solor Tracker

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Mini Solor Tracker Mini Solor Tracker My project is titled “Mini Solor Tracker”, but I am having issues with it. For my project I have to make a code and upload that code to a micro-bit board, that code will then make a motor with a solor panel spin and find the best spot during the day to sit and collect the maxium amount of solor energy. But my issue is the motor won't spin and I can't figure out how to fix it, I know my coding is right because the simulation of my project on my computer is… Read more

Urban Heat Islands

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Urban Heat Islands Urban Heat Islands I'm trying to do a project about urban heat islands and was following a tutorial here on the website. To do my project, I have to use another website called archgis.com. I followed the instructions and tried to add the separate layers onto the map, just like the tutorial video, but every time I added a new layer, it said that it couldn't load. I was very confused, so I did some digging and found out that you now have to go through a paywall to access the… Read more

Facial recognition with data

Ask an Expert Topic Forum: Grades 9-12: Math and Computer Science

Facial recognition with data Facial recognition with data The 4.3 section of the code ( Make Siamese Model) is not running, it's bringing up Type Error code [img][attachment=0]Screenshot 2024-11-08 001809.png[/attachment][/img] Re: Facial recognition with data Hi - I wanted to confirm that I saw this post. I am seeing this error as well and am checking with our team. I will follow up hopefully tomorrow. Amy Science Buddies Re: Facial recognition with data Hi - The problem has been… Read more

Is It Ripe Color Circuit

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Is It Ripe Color Circuit Is It Ripe Color Circuit Posted on behalf of student/family --------------------------------------------- I've attached a photo of the circuit. We used the slide show on the website but then also tried the youtube version since they were slightly different. Please let us know what we are doing wrong. We were trying to use it for a science fair project. Project directions:… Read more

Replace L293D with L298N selfdriving car

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Replace L293D with L298N selfdriving car Replace L293D with L298N selfdriving car Hi, is it possible to replace the L293D H-Bridge with the L298N H-Bridge to get the same results? Re: Replace L293D with L298N selfdriving car Hi - do you have a link to the exact part you are purchasing? In general there are many H-bridges and motor drivers that are compatible with Arduino and used for robotics projects. However, all the circuit diagrams you will find on our website are specific to the L293D… Read more

Question about Stem project: How does the number of parachutes affect terminal velocity

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Question about Stem project: How does the number of parachutes affect terminal velocity Question about Stem project: How does the number of parachutes affect terminal velocity Is the part at the end of the page where it says to calculate the theoretical terminal velocity necessary for completing the whole stem project? [Administrator note: Project url: https://www.sciencebuddies.org/science-fair-projects/project-ideas/SpaceEx_p043/space-exploration/parachute-terminal-velocity ] Re:… Read more

Obstacle Detecting Glasses

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Obstacle Detecting Glasses Obstacle Detecting Glasses I ade the obstacle detecting glasses from science buddies project.however,the buzzer in my project is still giving small beeps when any obstacle is not there.it makes a louder noise when an object is there but I want to remove the small beeps when obstacle is not there.How do I do this? [Admin note: Project url: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p108/electricity-electronics/obstacle-detecting-glasses… Read more

Can you crowdsource a better school environment?

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Can you crowdsource a better school environment? Can you crowdsource a better school environment? Using the app I'll build using the App Inventor tool, will I be able to send notifications to the users of my app? Re: Can you crowdsource a better school environment? Hi - we recommend asking this question in the App Inventor forums: https://community.appinventor.mit.edu/. App Inventor has many additional features that we do not necessarily use in our projects, and we are not always familiar… Read more

Particle Size and Chemical Reaction

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Particle Size and Chemical Reaction Particle Size and Chemical Reaction Posted on behalf of parent/student Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p030/chemistry/reactant-size-changes-chemical-reaction-rate --------------- I was hoping someone could reach out to help us with our son's 6th grade Science Experiment. We ordered the Home Science kit that is suggested with the science experiment called: "Can you Change the Rate of a Chemical Reaction by… Read more

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