Homemade Table Tennis Robot - remix

thingiverse

16.02.2019 Added the project to github. https://github.com/bbogdanmircea/Ping-Pong-Robot-BOB You can find the code that I used there. 22.09.2018 Hello, unfortunately because of some job related problems, I had to give away the table and pack the robot as probably I will have to move soon . So I am afraid no progress will be made in the next months . I am happy to support with any information if somebody is working on the same robot . As soon as my situation gets better I will get back to it . 17.08.2018 Added videos with Banebot wheels and improved stepper support : https://youtu.be/ayka_9WWK08 https://youtu.be/4J9OeD_G4EI https://youtu.be/0Lg4ioItwHg 10.03.2018 First garage tests : https://youtu.be/bwohv99UVjI https://youtu.be/Mkyyd9nZV4M https://youtu.be/ovS_viEor4w https://photos.app.goo.gl/MD8N9wMlSnhrU9b23 This is a remix of the Table Tennis Robot from instructables : https://www.instructables.com/id/Homemade-table-tennis-robot/ The original printed parts can be found here, many of them are used, but what I changed was : -There is some different type of DIN50 PVC pipe and connectors, so I made some adapter parts when the original ones would not fit to what I bought, this can vary greatly based on the shop . -The feeder is no longer using the piston and a servo, instead it is using a disc (designed by informer from rhcforum.ro) which is rotated by a stepper controlled by Arduino via an stick driver like the ones used in RAMPS board for 3D printer -The motors, I changed from the BLDCs used originally to the Mabuchi RS-540 from hobbyking, this is a very cheap, very powerfull motor, also I used 20 A brushed ESCs from Hobbyking which are also very cheap -The wheels, I used some aluminium hub rubber wheels which are normally used for landing gear on jets on hobbyking, also a 4 mm shaft and bearing si needed and also an axle adapter from 3.17 mm to 4 mm (I also tried printed wheels with 40 mm orings as rubber, but no success, they have horrible vibration, still the stl is available) -The rotation mechanism for the head is changed, this is based on alvinchua's design from instructables, it is a gear based rotation so no belt is needed -The original software was taken and then it was changed in order to control the stepper and the new ESCs . Also a BT module was added and an application for Android was made in order to control the robot Here are the links to the alternative parts that I used : The parts that I use will work with some additional printed parts and hardware that I listed into my project . Hope this helps you . https://hobbyking.com/en_us/turnigy-20a-brushed-esc.html https://hobbyking.com/en_us/mabuchi-rs-540sh-6527-brushed-motor-90w.html https://hobbyking.com/en_us/turnigy-scale-jet-alloy-wheel-54mm-w-rubber-tire.html https://hobbyking.com/en_us/ball-bearing-4x7x2-5-bsr-racing-bz-444-or-444-pro-1-10-4wd-racing-buggy-6pcs.html https://hobbyking.com/en_us/ntm-prop-drive-3530-series-replacement-shaft.html https://hobbyking.com/en_us/brass-motor-transmission-connector-4mm-3-17mmxd9xh20mm-5pcs.html