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Week #13: (4/15-19) Progress Reports
Posted: Mon Apr 15, 2019 5:54 pm
by rjagodowski
Post your progress reports for Week #13 here.
Allen-Bradley Ultrasonic Sensor Datasheet (Bob):
Re: Week #13: (4/15-19) Progress Reports
Posted: Mon Apr 22, 2019 8:21 pm
by dasubbotin
Here is a Parts List for mounting on the backboard:
* Power Supply: 120 VAC-to-240 VDC
* Power Supply: 120 VAC to 12 VDC
* 1 Dobot Voltage driver chip
* 6 Cube relays (to switch 2 Air solenoids & 4 pumps)
* One or more Terminal Block
* DC Stepper Motor
* 6 Din Rail Mounted Fuses
* Panduit
Re: Week #13: (4/15-19) Progress Reports
Posted: Mon Apr 22, 2019 8:47 pm
by dasubbotin
This week, John brought in the 3d printed cup holder and metal fabricated drink dispenser actuator head for the air solenoid. It should work great, although it may need to be stabilized from spinning in place. It seemed that 25 lbs of force was proper for confident actuation. The 4.2A, 24V DC stepper motor was demonstrated offline, then connected to the PLC by the end of class and was used to drive the belt in one direction (proof we could get it to at least run) using a simple flashing timer logic PLC program. It was interesting to look up the internals of how a DC stepper motor actually works, with two sets of magnetic coils and variable voltage supplied to them to achieve the different grades of rotation.