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Welcome to Otto Builders the community of Otto DIY robot, we share knowledge, solve problems and make all kinds of opensource robots.

Electronics
Electronics

Let's talk about new sensors and actuators, new inputs and outputs that you will like to implement in your robot or projects.

The best way to create, edit and share wirings is using Fritzing or Autodesk Circuits

Modified Ninja

I was not satisfied with either US eyes or a Ledmatrix.
With some -rather rough- modifications I was able to position the 16x8 Led matrix as a mouth underneath the eyes.

I studied ways to have US sensor, buzzer, pushbutton and ledmatrix and I found as the best way this wiring:

A0 = Pushbutton (switches to +)
D0 = GPIO16 US Echo pin
D1 = GPIO4 SCL (I2C)
D2 = GPIO5 SCA (I2C)
D3 = GPIO0 Right Foot
D4 = GPIO2 Right Leg
D5 = GPIO14 US Trigger pin
D6 = GPIO12 Buzzer pin
D7 = GPIO13 Left Foot
D8... (More)

Servo Jitterbug and we can't dance

Time to address this issue if we want to keep our lovely Neo pixels. Who does not love our Neos. (don't raise your hand).

The problem

"The single-wire control protocol used by NeoPixels requires a very steady data stream at 800 kilobits per second. There’s a tiny margin for error, but not very much. Bits must be issued at a precisely controlled rate…the Adafruit_NeoPixel library handles all this behind the scenes, carefully counting the time of each machine code instruction. For every pixel, there’s 24 of these:"

"Meanwhile, the Arduino is normally using small fractions of time here and there... (More)

Hello everyone, my name is Josué, i'm from México, let me introduce you to Otto Baymax, i participated in the Otto Remix Challenge 2019 with this small robot, I have added some features and functions to the original code and robot that I wish you could see, what you'll see on this video, is OttoBaymax responding to voice commands and playing some phrases from this well known movie (Latin American dubbing), hope you like it :)