Initial Setup

1. Connect an Ethernet cable from your computer to the port on the side of the printer.

2. 

   Right click on http://192.168.76.2:8000/admin and select "Open Link in New Tab". Note "admin" at the end of the address - Franklin has different pages allowing different levels of access to features.

3. 

   Activate the setup check box as shown in the picture.

4. 

   A screen filled with buttons will be displayed. Because Franklin works with multiple different machines and connections, a variety of choices is available.

5. 

   Select the port over which communication will take place, for Athena with the second generation bridge board, it's ttyS4. If you have the older version of the bridge board, it's ttyS0.

6. 

   Select the "Melzi from Beaglebone..." button.

7. 

   A red bar will appear at the top of the screen indicating that firmware is uploading.

8. 

   Franklin will display its admin page with no profile for the newly attached printer. Profiles permit saving different settings for different functions (Athena can do a lot more than just print 3-D objects).
9. Right click on https://raw.githubusercontent.com/phidiasllc/athena/master/franklin-profiles/Athena.ini. Save the page (Save Link As...) to a logical and memorable location on your hard disk.

10. 

    After downloading the initial profile from github, click on the Choose File button (near top, left of screen) and navigate to the location of the just-saved profile. Select the profile and click Open.

11. 

    Click the Import button. Franklin will upload the profile and populate all the values for Athena's various settings. Note that because Franklin is under active development, you may see some warning messages about settings that are no longer valid; those are harmless and should be ignored.

12. 

    Enter a logical name for the profile and click the "Save (As)" button. Note the profile name now appears in the drop down box at the top of the page. When you make a change to the settings that you want to be permanent, you should click this button again. If you don't enter a name, it will use the name of the currently selected profile.

13. 

    Click the "Set as Default Profile" button. Franklin will now load this profile when it is restarted by default. When saving new changes to the profile, you do not need to do this again.

The firmware is now loaded, but the printer is uncalibrated and will not print properly. Complete setup as described, below.

Changing Values in Franklin

Values in Franklin are presented with an input text box for making changes. The currently active value is shown next to the box.

Those text boxes permit entry of a value which is then set by pressing the "Enter" key on the keyboard. Values can also be changed by selecting a text box (left click on it) followed by pressing cursor up and down movement keys on the key board:

• Page Up: increase value by 10
• Page Down: Decrease value by 10
• Up arrow: increase value by 1
• Down arrow: decrease value by 1
• Shift + Up arrow: increase value by 0.1
• Shift + Down arrow: decrease value by 0.1

Math can also be performed in the text boxes; entering +1.5 (note plus sign) will add 1.5 to the value, entering +-1.5 (note the plus and the minus signs) will subtract 1.5 from the value.

All values of the same type can be changed at once by making the change in the maroon bar below the values.

Pressing enter on an empty box is the same as entering 0. Setting a value to something that Franklin cannot understand as a number sets it to NaN ("Not a Number"). For some settings, this is useful; for example, a temperature control is switched off that way.

The special values Infinity and -Infinity can also be entered (note the capital I), which is useful for some settings.

Calibration

1. Make sure the "Show Setup" checkbox is checked.
2. Scroll to bottom of the page to show the printer control buttons.
3. Click the "Home" button.
4. Select the Z position text box (immediately below Z (mm)).
5. Enter 0 in the Z position box (or leave it empty) and click Enter on the keyboard. The end effector should move down to approximately 10mm from the build platform.
6. Place a piece of plain, white paper on the build platform under the hot end.
7. In the Motor Settings area, select the text box in the maroon row under Switch pos (mm) and increase the values until the paper is slightly pinched between the hot end and the build platform while the Z position is 0 - the paper should be mobile when pulled and pushed, but resistance should be felt.
8. Move to Z = 50mm (select Z pos text box, enter 50, press Enter).
9. Select the Y position text box (immediately below Y (mm)) and enter a value of 100. Press Enter on the keyboard. The end effector should move near the vertex with the extruder drive mounted to it.
10. Move to Z = 0mm.
11. Select the text box for the w motor switch position and change its value using the up and down arrow keys (with Shift as required) until the resistance on moving the paper is about the same as it was in the middle of the build platform.
12. Move to Z = 50mm (select the Z pos text box, enter 50 and press Enter). The end effector will move 50mm off the build platform.
13. Select the Angle text box under the Delta section (it's a lone row in the middle of the position settings; not the setting at the bottom next to the target position.). Enter 240 and press Enter. The end effector should move to the U vertex (counterclockwise from extruder drive vertex when looking down). It does not move in a straight line (this is why the effector needed to be lifted before doing this).
14. Move to Z = 0mm and adjust the u motor switch position until resistance is felt similar to that felt previously upon moving the paper.
15. Move to Z = 50mm.
16. Set the angle to 120 degrees (Delta section, Angle position = 120 followed by Enter).
17. Move to Z = 0mm and adjust the v motor switch position until resistance is felt similar to that felt previously upon moving the paper.
18. Home the printer.
19. Set the angle to 0. (The end effector will not move.)
20. Move to Z = 0mm and readjust all of the switch positions (in the Motor Settings area, select the text box in the maroon row, Switch Pos (mm) column) until the resistance upon moving the paper is the same as felt before. Take care only to use arrow keys or values starting with a + sign: the differences between the values must not change.
21. Move to Y = 100mm.
22. In the Delta area, adjust the radius of all motors at once (with the box in the maroon bar) until the resistance upon moving the paper is the same as felt before. (Decreasing the radius makes it more tight, increasing the radius makes it less tight.)
23. Save the profile by clicking the Profile Save (as) button.
24. Save a backup of the profile to your computer: right-click the "Export settings to file" link and select "Save link as...". Save the file using a logical name in a memorable loccation. The backup can be reloaded by clicking the "Choose File" button just above "Export settings to file" followed by clicking the "Import" button. The backup can also be used as a starting point for calibration of a second Athena.

25. 

    Uncheck the "Show setup" check box to display the simplified print screen.