author
1Instructables2,398Views9CommentsNew Hampshire, USAJoined March 22nd, 2017
I'm a freelance hard - firm - soft waregineer who loves sharing and learning.

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  • RoboJay commented on RoboJay's instructable 2020 Bot1 year ago
    2020 Bot

    The wiring diagram was off exactly how you said. I've uploaded a corrected version. Thanks again!

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  • RoboJay commented on RoboJay's instructable 2020 Bot1 year ago
    2020 Bot

    Awesome job - and thanks for all the feedback!I'll go through your comments/corrections/etc. and fix what I can.Remotes - Yes, some ship with batteries, some don't. There was a couple month period around the beginning of the year when battery shipping regulations in China were in flux, and many suppliers just pulled all batteries from products to avoid problems (I ran into this myself with a large order).USB Cables - the Nanos I order direct from China come with cables, which can help. The ones on Amazon may not (or you might need to search around).Wiring diagram - Ok, I'll check into it. I definitely had a mistake in there at one point and thought I fixed it (and this sounds like the same mistake). Seems like I didn't fix it or at least didn't propagate the fix.Part positioning - Y...

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    Awesome job - and thanks for all the feedback!I'll go through your comments/corrections/etc. and fix what I can.Remotes - Yes, some ship with batteries, some don't. There was a couple month period around the beginning of the year when battery shipping regulations in China were in flux, and many suppliers just pulled all batteries from products to avoid problems (I ran into this myself with a large order).USB Cables - the Nanos I order direct from China come with cables, which can help. The ones on Amazon may not (or you might need to search around).Wiring diagram - Ok, I'll check into it. I definitely had a mistake in there at one point and thought I fixed it (and this sounds like the same mistake). Seems like I didn't fix it or at least didn't propagate the fix.Part positioning - Yes, this can be tricky. I'm working on a revision of the template that has positioning "hints" built in. When assembling the IR receivers at Maker Faire, I did end up having people put the wires on before mounting to the robot. I'll get that into the notes.Foam color - I haven't played with multi-color foam yet. Good note.Motor Direction - Sure, you can swap the jumpers instead of the motor wires. Technically, it's the motor wires that would be wrong. Functionally, it doesn't matter (unless you go to debug it later and get confused).Speed - Maybe you have one of the other gearbox ratios? At 6V, I'd expect the wheels to be at about 90 RPM. It's also possible I had the speed turned down or even low batteries for the video.Time - Yeah, definitely longer than 20 minutes unless all the prep-work has been done for you. With all the prep-work done, we were cranking robots out in about 30 minutes at Maker Faire. But, that's also with me right there explaining things. At least I now have an idea where the time snags are and am working on an update (e.g. the new templates, different tape, other hints).Again, thanks a bunch for the feedback and congratulations on the build!--Jay

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  • RoboJay commented on RoboJay's instructable 2020 Bot1 year ago
    2020 Bot

    You're absolutely right! Sorry about that!!!I'll fix the quantity in the Instructable.Thanks! Have fun building.--Jay

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  • RoboJay followed ST-Geotronics2 years ago
      • The Twins Electronic Game
      • GPS Data Logger
      • Make It Blow!
  • RoboJay commented on RoboJay's instructable 2020 Bot2 years ago
    2020 Bot

    Twenty volunteers built twenty robots over two days at Bay Area Maker Faire 2017. Everyone went home with their robot!Many thanks to: Timothy, Nicky, Rithwik, Gurneet, Tanush, Derin, Ashwin, Jaenoven, Tracey, Eva, Elizabeth, Isabel, Noah, Daniel, Steven, Dylan, Tanish, Aarush, Chiania, OwenSee the slideshow here: https://youtu.be/oPtRow91oMk

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  • RoboJay commented on RoboJay's instructable 2020 Bot2 years ago
    2020 Bot

    I added two motor control examples to the 2020 Bot library (https://github.com/robojay/_2020Bot_Library)One uses the delay() function between motions. This is great for ease of understanding, but not so great to use in practice. The delay() function blocks the robot from doing most other tasks until the time expires.The second example uses millis() and a timestamp to step through the motions. This lets the robot do other important tasks, such as blinking the LED, while still controlling motions.On a slightly different topic, if you want to understand a little more about the infrared proximity sensing used on the 2020 Bot, here are slides and demo code for a presentation I gave to the Nashua Robot Builders: https://github.com/robojay/IrProximityDemo

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  • RoboJay's instructable 2020 Bot's weekly stats: 2 years ago
    • 2020 Bot
      547 views
      14 favorites
      6 comments
  • Football Robot (or Soccer, If You Live on the Other Side of the Pond)

    Excellent work by you and your students!

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  • RoboJay commented on RoboJay's instructable 2020 Bot2 years ago
  • RoboJay entered 2020 Bot in the Robotics Contest 2017 contest 2 years ago
  • RoboJay posted an instructable 2020 Bot2 years ago