Equipment Training

[1] Inventory, Tool Explanation

Make sure the tools are present and stored away in the proper bin. If you have two tools bring the surplus to the lost and found bin.

Download video or BME210 students use the form below.

Inventory, Tool Explanation

[2] Bench Top Tools Training

Download video or BME210 students use the form below.

Bench Top Tools Training

Instructor Video: Sound is not great but we walk  you through the lab below.

Assignment: Write up your results on sheet of paper or as a word doc. Upload to the bench top tools training form above. Upload is the third part of the form.

Measure Distance

Steps

1) Measure the length of your table.

2) Measure the width and length of your raspberry pi.

3) Measure the diameter of the holes of your raspberry pi.

4) Measure the distance between the holes of your raspberry pi. Calculate the center to center distance.

5) Measure the height of the expansion port pins (just the shiny part).

6) Never use the sharp edges of a caliper to inscribe your manufacturing pieces.

Wrenches

Steps

1) Measure the width of a smaller Metric Allen Wrench using the Caliper. Does it match the number indicated on the container?

2) Measure the width of a smaller Imperial Allen Wrench using the Caliper. Does it match the fractional number indicated on the container? 

3) Always use the correct size and shape screw driver bits to tighten a screw.

Cutting

Steps

1) Open the Stanley knife and make sure you know how to change the blade.

2) Check course notes about stripping wires. 

3) Cut a short piece of wire from stock and strip it.

Pliers

1) Never use Tweezer to tighten nuts.

[3] Laser Cutter Training: Design Raspberry Pi Protector

Download the video or BME210 students use the form below.

Watch Laser Cutter Training

Assignment: You will need to attach a top and bottom plate to the stand-offs of your Raspberry Pi to pretect the hardware from shorting out.

Materials:

Design

The mechanical dimensions of the raspberry Pi can be found in the hardware section of the Raspberry Pi Foundation: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html

The bottom plate outer dimensions will need to match the size of the Raspberry Pi and include 4 holes of same size as the Raspberry Pi.

The top plate will need to have same dimensions as the bottom plate but include cutouts for the expansion port, the camera port and the display port.

Example commercial plates: https://pi-plates.com/pi-plates-catalog/ Ours should fit the dimension of the Raspberry Pi.

Preferably use OnShape sketching tool to design the plate. You can also use Inkscape or Adobe Illustrator. You will need to export the sketch as DXF. DXF can be viewed and modified in Inkscape. In OnShape you need to export the Sketch not the 3D model. 

You can engrave your name or any other text by placing  enclosed polygons onto the drawing. Adding text and your name is easier with the Laser Cutter Control Program.  On the laser cutter control program, you will give those items a different color and then select to scan the beam within the polygon boundaries instead of cutting along the polygon. The Laser Cutter control program does not import text easily.

Example of instructor completing the assignment (videos are unpolished and recorded a while ago...):

Cutting on the Laser Cutter

Our laser cutter control program requires DXF files. Preferably exported in units of mm. Open .... if not already running on the computer, clear the objects that were imported previously and import your DXF file. Zoom out and make sure that the size of your object is appropriate. Otherwise select all components and attempt to scale by 2.54 or 25.4.

Turn on all equipment by flipping the main switch. Check that the exhaust fan, the chiller and the ais compressor are running.

You can permanently damage the laser cutter if:

Turn on the laser cutter. Let it zero the x/y table.

Load your sheet onto the bed after you lowered the bed with arrow keys.

Exit the Z translation with ESC and move the pointing laser to the upper left corner of your part.

Auto Zero the bed height. Adjust the bed height close to the value written on tape next to the on switch.

Close the lif and you are ready to cut your part.

After the part is completed, check that it was cut all the way through without moving the sheet. Give it a second pass if it was not cut all the way through.

YOU ARE REQUIRED TO WATCH THE LASER CUTTER WHEN IT CUTS AND EXTINGUISH ANY FIRE, first with spray bottle and if it gets worse with the CO2 fire extinguisher.

[4] Powertools Training: Drilling, Filing, Sanding

Download the video or BME210 students use the form below.

Watch Powertools Training

In the part below drill two holes (4mm diameter) with  drill and two with drill press as centered as possible into the 4 markers on the top. 

The remaining  stubs will need to be removed. Use the disk sander. File the indicated positive and negative corner with a file. Clamp the plate in a vise.

Upload picture of your part with your name written on it.

Upload picture of modified power tool plate

[5] 3D Printing Training

Download the video or BME210 students use the form below. The instructor video is about 3D printer maintenance. It explains how to level the print stage and how to change the filament.

Watch 3D Printer Training

Assignment:

Please obtain the Cura 3D slicer software: https://ultimaker.com/software/ultimaker-cura/

Run Cura and install the printers we have. Preferences / Configure Cura / Printers / Add New / Non Ultimaker Printer / Add non networked printer

Make sure you configure the Nozzle for 0.4mm and use Generic PLA for filament. Do not print other materials. Use standard quality and standard setting.

Explore tree support.

Download a 3D model (STL file) of your choosing from from https://www.thingiverse.com/.

Have that part converted to gcode with the Slicer and upload to the printer server.

Take a screen shot of the sliced part by first adjusting the top visual slice with the slider in the Pursa software.

3D Printer Settings

PLA (we only support PLA on Ender Printers)

Slicer Settings


3D Printing Screenshot

[6] Electronics Equipment Training

Download video or BME students use the form below.

Watch Electronics Equipment Training

Instructor Video: Sound is not great, but we walk you through the lab.

The manuals for the programmable power supply, digital multimeter, oscilloscope, function generator, stereoscope, 

are listed on the laboratory website: https://sites.google.com/email.arizona.edu/salterlab/equipment/work-bench

For this laboratory you will need:

Write up your results on sheet of paper or as a word doc. Upload the write up to the Watch Electronics Equipment Training above.

Steps:

The instructions below do not state exactly which buttons you will need to press or how to open and close the clips or attach the leads. You will be able to figure that out.

Programmable Power Supply

1) Turn on the programmable power supply and set the output to 3.5 Volts.

2) Limit the current to 100 milli Ampere.

3) Attach the resistor to the output connectors using the cable with alligator clip and banana plug.

4) Enable the output and note the values indicated on the display. Do they match your expectations? You will need to use Ohm's law.

Digital Multimeter

5) Turn on the digital multimeter.

6) Attach the measurements leads so that the black cable is plugged into the common plug and the red lead to the plug designated for Voltage, Resistance, Capacitance, Conductivity.

7) Measure the Voltage Potential over the resistor witch those leads and report it.

8) Turn off the programmable power supply and using the digital multimeter measure the Resistance of your resistor.

9) Reconfigure the leads of the digital multimeter to measure current. The black lead will remain in the common plug while the red lead will need to be connected to the current plug. Reprogram the digital multimeter to measure current.

10) Attach the leads to the resistor to measure current. Enable the output of the programmable power supply. Report the current. Does it match the display of the power supply?

Oscilloscope

11) Connect the measurement lead to channel 1 and turn on the oscilloscope.

12) Press the default button and connect the lead to the calibration terminal. 

13) Enable channel 1. Adjust the vertical and horizontal settings until the square wave is displayed properly on the screen. Make sure the trigger is set to Auto and uses Channel 1 as its source.

14) Measure the Amplitude (daltaY) of the signal manually using the Cursor button. 

15) Measure the time between two rising edges. Calculate the frequency.

16) Led the oscilloscope measure V_peak_peak and Frequency using the Measure button

Function Generator

17) Turn on the function generator,

18) Program its output to produce a 10kHz sinewave with an amplitude of 1V and signal offset of 1V.

19) Display the signal on the oscilloscope and verify it.

20) Measure with the digital multimeter Direct Current Volt (DCV). Report it.

21) Measure with the digital multimeter Alternating Current Volt (ACV). Report it. Explain why it is not 1V.

22) Change the waveform to a square wave. Repeat the two steps above.

Congratulations! You are now a novice electrical test engineer.

[7] Soldering Training: Soldering the Flasher Solder Kit

Each student will need to complete soldering of flasher kit during the soldering lab.

[8] Crimping Training

Each student will need to attach JST terminals to wires.