Chip-3v0

thingiverse

Hello everyone, here's my humble remix of the Chip-E. Here are the changes: - The body: - Compatible Lego plates cover the head, generated with OpenSCAD and the library from Projunk. - A base, middle section, and compatible Technic L-beams also generated with OpenSCAD and the Technic L-beam library again from Projunk. - A body part has been inserted between the middle and head sections to store an Arduino Mega. - Every section is bound to others with compatible Lego Technic friction pins (the black ones). - It now features a nose, and the head section has been elevated to receive the LCD replacement. Now let me introduce the electronic parts: - Two lines of LCDs have been replaced by two Nokia5110 graphic LCDs (at first, I wasn't sure if both could be driven separately). - An HC-SR04 ultrasound sensor is located in the middle section for obstacle avoidance and future SLAM. - A HC-06 Bluetooth module allows control using an Android phone as a remote controller, wired on RX3 and TX3. - The battery pack is a 2S or 7.4V source. - Servos have a 6V source, powered by the Mega/screens/HC-SR04 and HC-06, which are also powered by a UBEC from the 2S pack. While pins on the head are mostly for fun and decoration (like beautiful Skyrim helmet horns), the Technic beams on the base and middle section provide strong anchors to add physics functionalities like animated arms. The Arduino Mega allows many other functionnalities (voltage sensor for self battery depletion detection, ...). Some testing videos: First tests of walking (2sec then 1 sec periods) https://www.youtube.com/watch?v=mcLu4BAvRUA Starting up then go for a walk: https://www.youtube.com/watch?v=p_Q9QmQ-M0A Obstacle detection: https://www.youtube.com/watch?v=ZIjLggfGIAk