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Clinostat - Continuous rotation servo motors burning out

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

Clinostat - Continuous rotation servo motors burning out Clinostat - Continuous rotation servo motors burning out Doing a project closely based on this post: https://www.sciencebuddies.org/science-fair-projects/project-ideas/PlantBio_p054/plant-biology/plants-grow-microgravity-arduino-clinostat As we are in Canada, we didn't buy the kit associated with it, but built our own, using these motors Wishiot Feetech 9g FS90R Mini Micro Servo 360 Degree Continuous Rotation Servo Motor (sold here:… Read more

3.3V mini solar tracking system coding problem

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

3.3V mini solar tracking system coding problem 3.3V mini solar tracking system coding problem Hi Folks first time here and this will be an easy question. but my Gr 8 daughter nor I can rewrite one line of code. We are trying to change the code in the tutorial video from : analog read pin P1 TO: set voltage to 3.3 × analog read pin P1 / 1023 We are unfamiliar with how to manipulate the code blocks such that we get: set voltage to 3.3 × analog read pin (0 / 1023) the division formula in… Read more

Thyroid Cancer Recurrence: error message

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

Thyroid Cancer Recurrence: error message Thyroid Cancer Recurrence: error message Hey, I'm not sure if this is a problem with the code or an external issue, but whenever I run any code block, I get an error message saying either "ModuleNotFoundError" or "NameError". I attached a screenshot, if you could help. Re: Thyroid Cancer Recurrence: error message You need to make sure you run all the blocks (in order). Go back and start from the beginning and make sure that each one executes… Read more

Question on Dealing with Diabetes: The Road to Developing an Artificial Pancreas

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

Question on Dealing with Diabetes: The Road to Developing an Artificial Pancreas Question on Dealing with Diabetes: The Road to Developing an Artificial Pancreas I’m just wondering if I could use purified water such as bottled water instead of distilled. Would it have any detrimental effects if I did so? Thank you. Re: Question on Dealing with Diabetes: The Road to Developing an Artificial Pancreas Hi - "purified" bottled drinking water can still have minerals and other contaminants that… Read more

Struggling with “How old is the Universe.”

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

Struggling with “How old is the Universe.” Struggling with “How old is the Universe.” I’m having a tough time understanding the chart with all of the numbers on it. Do I have to subtract the g-r for all 300+ stars? Moderator suggestion: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p042/astronomy/how-old-is-the-universe Re: Struggling with “How old is the Universe.” Hello, So I think what you are confused about is the 2nd step of the 'Make a H-R Diagram'… Read more

Robot Arm Project

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

Robot Arm Project Robot Arm Project Hello, I am currently working on a project known as, "Build a Robotic Arm" and I am stuck on the coding section. I used the figure 7 example for the wiring and downloaded the example code to a new sketch in the arduino website. However, when i verify the code there are always errors with it. Am I doing something wrong? If so, is there any way i can fix it. Thank you. [admin note: project url:… Read more

Adaptive Switch Project

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

Adaptive Switch Project Adaptive Switch Project We have students who would like to build an adaptive switch. Where can we find the full instructions? This is a project that has an asterisk in the title. Re: Adaptive Switch Project Hi, Projects with an asterisk in the title are "abbreviated" ideas that do not have full instructions. However, if your student wants to use a micro:bit, then this project is extremely similar and they could use the same code. They can change the mechanical… Read more

Kalanchoe plants

Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences

Kalanchoe plants Kalanchoe plants Hello, I pray all is well. We have a question concerning the Kalanchoe plants. 2 plants outside, 2 plants in window sill & 2 plants in darkness of closet. We’re measuring growth and blooming. Do you think this is sufficient or should we also include fertilizer in 2 of the plants? Your feedback is appreciated. Thank you Re: Kalanchoe plants Hello, I would not recommend adding fertilizer to only two plants because that changes too many things about… Read more

Add DC pump to Moisture indicator project

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

Add DC pump to Moisture indicator project Add DC pump to Moisture indicator project For my kids 6th grade science project we are trying to modify the project "Green Technology: Build an Electronic Soil Moisture Sensor to Conserve Water " by adding a small DC pump While the output of the 4011 chip used in this project is strong enough to drive an LED directly, it is not powerful enough to drive a pump. We are working on how to use a transistor and an external power supply to drive a small… Read more

Science Fair

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

Science Fair Science Fair I want to participate in my school's science Fair this year, but I'm not too sure on where to head. I kind of want to go towards environmental issues, and how to fix some of those, since many of my school's winners have all been towards that field. I'm interested in doing something to do with water quality, or something based around environmental issues. Any Suggestions? I would greatly appreciate if anyone responds. Thanks! :D Re: Science Fair Hi! Science Buddies… Read more

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