My idea of the design

[LouTerrailloune]

I found this project a few days ago and find it very interesting (I have a Nabaztag which is sleeping in is box for years now).

@Oripy did not explain how the hardware will be, so here is my suggestion:

We can create a board, the same size as the original board, with leds in the same place and the same connectors (also in same place). We use the empty space on the board to put required chips to drive the leds and motors (plus a voltage convertor). The Pi can be put in a box that will be under the Nabaztag.

[zbrag]

yeah, that is along the same lines I was thinking :smile:

[Oripy]

My intent was, like you described, to do a board that controls some LEDs (at the same place as the existing ones) and the motors and speaker. I also intended to put the Pi inside the Nabaztag, but I didn't checked if it fits!

Now with the Pi Zero it might be even easier! I also learned some Arduino and discovered the ESP8266 that might be enough to control everything (although less easily as it is just a microcontroller).

[LouTerrailloune]

Hi, The problem with the ESP8266 is that it only has 2 gpio.

For the size, the A+ will fit perfectly (on top of the speaker), look at the two pictures: https://drive.google.com/file/d/0B9-6YSvPkDC6Tmh4cHMxWkZvS3M/view?usp=sharing https://drive.google.com/file/d/0B9-6YSvPkDC6WV92b3hMd1gyb3c/view?usp=sharing

[Oripy]

This is not True at all, the ESP8266-01 has 2 GPIO but you can have more if you sacrifice the serial ports. And there is the ESP8266-12E, that has way more GPIOs (I have a board here for a small project that uses 8 outputs and 1 input with no issues).

Useful diagram: http://makernews.info/featured/2015/09/esp8266-pinout-the-esp-01-and-esp-12-on-nice-new-pin-out-diagrams.html