Darwin Mini is an Open Hardware and 3D printable robot from the Robotis company, physically similar to Darwin OP. It is way cheaper than his big brother, because based on the Dynamixel XL-320 motor (this servo is originally made for Darwin Mini). The approximative cost is around 500€, due to the 16 servos at 20€ each, electronic boards and plastic parts.
You can find the 3D parts for printing at three places:
- on the official website, but lot of design files are missing
- on Thingiverse, where a kind of employee seems to share more files
- on GrabCad, where @alexandre remade them in Solidworks, without modification
Darwin Mini has a large amount of advantages:
- the skeleton is a commercial product, stable on his feet, solid, studied by mecatronic engineers.
- he is able to walk, roll on itself, do a headstand, sit, stand up and more (lot of ideas on Youtube)
- evolutive (Ollo holes system), hackable, lightweight, cheap, solid, easily reparable… and so cute!
But it miss some key features:
- a Raspberry Pi (because of the community and available ressources) for connected applications, intelligence, autonomy, vision etc
- a Pi camera module (hardware accelerated) in the head (for direction)
- one or two microphones (on arms for directional analysis ? only one in the chest ?)
- a speaker (Text To Speech, choregraphy…)
- an IMU (accelerometer, gyroscop, magnetometer, compass…) in the chest (for stability and precision)
- two hands, to grab objects, climb, or anything else
I wish to find people to brainstorm about these features, share ideas and then build the necessary 3D model parts.
For example, we can use Darwin OP hands as model (middle picture):
I’m not sure of the choice for the Pi version, between Pi Zero, Pi 2 B or Pi 3 B, because of different caracteristics (electric consumption, size, heat, power, connectic…).
My skills are mainly IT development, I made a little OpenSCAD but I don’t know to use either SolidWorks neither FreeCAD, that’s why I need your help!