by bfinio
Fri Mar 24, 2017 5:31 am
Forum: Grades 6-8: Physical Science
Topic: Transformer problems
Replies: 4
Views: 123

Re: Transformer problems

Rick - there's a schematic on the background tab of the project, see Fig 2: http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p024.shtml#background [edited this post to avoid future confusion - Rick and I discussed and confirmed that the schematic in Fig 2 of the background is c...
by bfinio
Mon Mar 20, 2017 8:56 am
Forum: Grades 6-8: Physical Science
Topic: Transformer problems
Replies: 4
Views: 123

Re: Transformer problems

Hi eicpiemann - are you following the instructions in this Science Buddies project? http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p024.shtml#materials If so, is there a reason you weren't able to purchase the suggested transformer from Jameco? http://www.jameco.com/webapp/wc...
by bfinio
Thu Mar 09, 2017 8:34 am
Forum: Grades 9-12: Math and Computer Science
Topic: Delete a file deleted my hard drive!
Replies: 1
Views: 164

Re: Delete a file deleted my hard drive!

Hi jbthefirst - I'm sorry to hear you had trouble with the program. I looked at the reviews for this program online and the vast majority of them were good, but I did find one review that mentioned a problem similar to what you described. I would suggest that you google "boot Windows in safe mo...
by bfinio
Thu Mar 09, 2017 7:28 am
Forum: Grades 6-8: Physical Science
Topic: Hydraulic Lift Project is problematic
Replies: 2
Views: 73

Re: Hydraulic Lift Project is problematic

*One additional thought - another variable you could measure, that isn't mentioned in the current project, is the distance each piston moves. i.e. how far does the slave piston move if you fully depress the master piston through its full range. You can also use this to analyze mechanical advantage s...
by bfinio
Thu Mar 09, 2017 7:17 am
Forum: Grades 6-8: Physical Science
Topic: Hydraulic Lift Project is problematic
Replies: 2
Views: 73

Re: Hydraulic Lift Project is problematic

Hi dkreft7, Thanks for pointing this out. I just read through the experiment and you're right - as written, it doesn't really make sense. The procedure described in step 5 to "see if the lift supports the weight" depends on static friction and has nothing to do with the force you're applyi...
by bfinio
Fri Mar 03, 2017 7:25 am
Forum: Grades K-5: Physical Science
Topic: Electric Play Doh!
Replies: 3
Views: 168

Re: Electric Play Doh!

Hi ssharrow - I have tested both versions of this. Rick is correct that the homemade stuff works great. I'm not sure what the exact ingredients are in store-bought Play-Doh but it turns out that it's also conductive, and store-bought modeling clay is an insulator as Rick mentioned. So it really come...
by bfinio
Fri Feb 17, 2017 6:00 am
Forum: Grades 6-8: Physical Science
Topic: Artificial Pancreas
Replies: 2
Views: 162

Re: Artificial Pancreas

Thanks for catching that! I've corrected the error. You might not see the change right away but it will be there the next time the site updates.
by bfinio
Tue Jan 31, 2017 2:29 pm
Forum: Grades 9-12: Physical Science
Topic: I have an important question
Replies: 3
Views: 190

Re: I have an important question

Hi taamaraboyett - we also have a very extensive multimeter tutorial that contains pictures of other multimeters and explanations of what the various symbols and letters mean that you may find useful:

http://www.sciencebuddies.org/science-f ... eter.shtml
by bfinio
Fri Jan 27, 2017 7:11 am
Forum: Grades 6-8: Physical Science
Topic: BlueBot Project #3
Replies: 2
Views: 155

Re: BlueBot Project #3

Hi Sadia22551 - in addition, we have a very detailed breadboard tutorial that may help you understand the differences between different types and sizes of breadboards: http://www.sciencebuddies.org/science-fair-projects/how-to-use-a-breadboard.shtml Willey is correct though, as long as you keep trac...
by bfinio
Thu Jan 19, 2017 1:13 pm
Forum: Raspberry Pi Projects Kit
Topic: IOT based safety/assistance in Indian Railway
Replies: 1
Views: 154

Re: IOT based safety/assistance in Indian Railway

Hi Sheby - this forum is intended for students who have purchased the Science Buddies Raspberry Pi Kit and need help using it. If you are planning on using a Raspberry Pi for your project, you may have more luck asking questions in the official Raspberry Pi forums: https://www.raspberrypi.org/forums...
by bfinio
Thu Jan 12, 2017 2:06 pm
Forum: Getting Started
Topic: 4 in 1 Robot. Building an object avoiding robot.
Replies: 1
Views: 197

Re: 4 in 1 Robot. Building an object avoiding robot.

Hi - if your batteries are getting hot then you definitely have a short circuit somewhere. Please carefully check and double-check all of your wiring to make sure it matches the diagrams in the project exactly. A single wire misplaced by just one row on the breadboard can cause a short circuit.
by bfinio
Wed Dec 21, 2016 10:40 am
Forum: Raspberry Pi Projects Kit
Topic: LCD screen gets hot and sucks power from Raspberry Pi
Replies: 1
Views: 231

Re: LCD screen gets hot and sucks power from Raspberry Pi

Hi mkioiuq - sorry you didn't get a reply earlier. This forum is intended for people who purchased the Science Buddies Raspberry Pi Kit, and since our kit doesn't include that LCD screen, I'm afraid I can't offer any specific advice. You are probably better off asking in the official Raspberry Pi fo...
by bfinio
Wed Dec 21, 2016 10:34 am
Forum: Raspberry Pi Projects Kit
Topic: Activity Instructions
Replies: 1
Views: 167

Re: Activity Instructions

Hi LD19 - sorry you didn't get a reply to this earlier. The instructions are included on the SD card that comes with the kit. That way the kit can be used offline and you do not need to connect the Raspberry Pi to the internet to access the instructions.
by bfinio
Mon Nov 28, 2016 12:02 pm
Forum: Grades 6-8: Physical Science
Topic: Why do we hear less sound volume when adding more magnets?
Replies: 2
Views: 142

Re: Why do we hear less sound volume when adding more magnets?

Hi sohanpavan, Another guess with a more physical explanation - for the speaker to work, it's important that the paper tube can move up and down without sliding against the magnets. This will introduce friction, decreasing the movement of the speaker cone and decreasing the sound volume. If the pape...
by bfinio
Thu Nov 10, 2016 10:13 am
Forum: Grades 9-12: Physical Science
Topic: Broken wire cores
Replies: 1
Views: 127

Re: Broken wire cores

Hi Hoagie - can you specify which part (e.g. the battery pack, one of the motors) has a broken wire? That will help us answer your question better.

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