This week, I was able to finish up our second chassis prototype. It reduces a lot of vertical room in places that are not necessary, thus removing a lot of weight. Also, it fixed the stiffness in the chassis rotation by moving the stepper motor towards the center a little bit, reducing the amount of friction it was generating.
For the dispenser, I was able to perform some testing with the new component that pushes down the cards for more friction to the wheels. Currently, it just has a bunch of coins inside as weights, but this will be replaced with calibration weights or different things that weigh about 150~200 grams. Even with this weight on top, the card jamming issue is still there, so we are also printing out a new prototype with a smaller opening. Hopefully, this will only let one card through the hole and prevent the second card from leaving.
I am on schedule, with the rest of my 2~3 weeks left before integration being dedicated to testing the dispenser out and calibrating it. Next week will be mostly collaborating with David and Jason to get the dispenser working decently so that the data collection step can be mostly automated.