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====== Testing parts! ======

When making custom parts, getting the bottom vision test perfect before assembly will save you a lot of grief!
Lets test our Accelerometer (14-LGA) that we defined.

===== Pick up the part =====

First we go to the **Tape Feeder** table and type in **2** (edit) and **2** (change data). Then down-arrow to get to the part we want to test
Make a note of the part number (in this case its **119**)

{{:mdcpickandplace:testing:feederedit.png|}}

Now press **F8** to get into training mode

{{:mdcpickandplace:testing:feedertrain.png|}}

We want to pick up the part so we have to get into **Nozzle** mode. Press **9** (not F9, just the number 9)

{{:mdcpickandplace:testing:nozlmode.png|}}

Now we will pick up the part - you have to have the **stroke** already set properly for this by the way. Check the instructions for doing that!

Press **R** to bring the nozzle down to the part. Then press **V** to turn on the **v**acuum. You should hear the vacuum kick in. Now press **R** again to bring the part up. Check the nozzle to verify you've got the part picked up!

===== Begin the test =====

Now we're ready to test. Press **Shift P** to bring up the testing window

{{:mdcpickandplace:testing:shiftp.png|}}

You can now enter in the part# you want to test. Remember that this one is **119**. There are two kinds of tests, one is continuous and one stops after a few tries. To do the continuous one type in **119,0,** (note the comma at the end). To do the one-shot test, type in **119,0** (note no comma). With the continuous test, you can mess with the light levels but in the end you should make sure it works with the one-shot

{{:mdcpickandplace:testing.png|}}

===== Performing the closed loop vision test =====

The machine should now do a 'closed loop' multiple test to get the part centered:

{{:mdcpickandplace:test0.png|}}

{{:mdcpickandplace:test1.png|}}

{{:mdcpickandplace:test2.png|}}

{{:mdcpickandplace:test3.png|}}

===== Fixing problems =====

If you aren't getting anything from the machine vision, you can try a few things. First, press **F3** to get into the **Parts Definition** table. (You may need to press **Escape** or **Shift-P** or press any **Stop** button before F3 - verify!)

You can try changing the vision type. For example, if you're using **LV 26** try **126 or **226** - LV 126 makes the lighting a little darker, LV 226 makes the lighting a little brighter.
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