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  • scaraman's Avatar
    02-12-2020, 09:20 PM
    The leg hinges are in PP, polypropylene, perfect plastic for hinges. And 3D printable, at least for simple items like this. There is still a bit of flex in non-wanted angles when the legs are at extreme sideways...
    5 replies | 305 view(s)
  • scaraman's Avatar
    02-12-2020, 08:57 PM
    I forgot to mention that never ever connect a PWM pin from the Teensy directly to a servo. It works fine until the cables on the servos short, intermittently, sends 6V to the teensy and fries it. Believe me, I have 5...
    5 replies | 305 view(s)
  • scaraman's Avatar
    02-12-2020, 08:28 PM
    I wanted to learn modern machine learning by building a small walking robot and have it controlled by a neural network. I will get to that, eventually. That's the primary reason I chose the Teensy 4 over other...
    5 replies | 305 view(s)
  • scaraman's Avatar
    02-12-2020, 06:16 PM
    That umbilical blob is a LiPo pack watcher. It beeps loudly when a cell is too low. I already broke one pack due to discharging it too much, my speciality is breaking hardware :)
    11 replies | 283 view(s)
  • scaraman's Avatar
    02-12-2020, 03:42 PM
    Got some videos of it walking/climbing/stumbling around. https://youtu.be/a22FzKibE3c I could write something about it and post in the Blog section.
    11 replies | 283 view(s)
  • scaraman's Avatar
    02-10-2020, 05:59 PM
    It turns out it was the servos sending back their supply voltage to the PWM pins! I was totally sure that one of my boards broke with no servos attached. I was wrong. The (very low quality) cables to the Tower Pro...
    11 replies | 283 view(s)
  • scaraman's Avatar
    02-10-2020, 02:44 PM
    Two more dead Teensies, only one left :(. At least I am supporting the project :) The last one died when I connected the USB port while the Teensy was powered on, running on battery. I use SPI so the LED is...
    11 replies | 283 view(s)
  • scaraman's Avatar
    02-07-2020, 09:20 PM
    The 2nd teensy with broken USB was "reprogrammed" using the 15s button hold you mention, it is blinking. When in programming mode or running that blink program there is no reaction from the USB host when plugged in,...
    11 replies | 283 view(s)
  • scaraman's Avatar
    02-07-2020, 02:24 PM
    I built this little board to control a little robot with a T4. It's mainly a puzzle of various pre-made modules. It has one big switching voltage regulator to provide power to 12 tiny servos, 5.5V. That voltage...
    11 replies | 283 view(s)
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Quadruped walking robot 02-12-2020 09:20 PM
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