PCB Printer

The Voltera V-One PCB Printer

The Voltera V-One brings quick turn PCBs to your desktop. Import your gerber file into the Voltera software, press print, and the V-One will bring your board to life. Use the solder paste dispensing and reflow features to mount components onto your printed board, or mount components on a pre-fabricated board with ease.

The current Ace of this machine is Jake Whipple.

Documentation

• Voltera Home Page
• User Manual
• User Guides

Current Inks and Paste

The following conductive inks and pastes are stocked in the PCB Lab.

Conductive Ink: AqueousSnake

- Use to lay conductive traces on substrates

Solder Paste: FuriousAnt

- Use only on boards that utilize Voltera's ink traces, such as the ink above.

Solder Paste Sn63 Pb37: ArmoredArmadillo

- Use only premade boards, such as ones from Sunstone Circuits

Terminology

Voltera utilizes many pieces of equipment. It is important to be able to distinguish them, especially when trying to explain troubleshooting issues. Here are the items you should familiarize yourself with:

• 

  Substrates

• 

  Probe

• 

  Dispenser and Sheath

• 

  Conductive Ink Cartridge

• 

  Nozzle - 225 Micron

• 

  Burnishing Pads

(Pictures to add) Sacrificial layer

Training

Level 1

Training board - The Blinky 500

Successful completion of level 1 training will grant access to:

• Using the Voltera to create single-sided boards with NO vias or holes.

1. Ready the Ink
   1. Reference the Current Inks and Paste for information on the what the PCB lab is currently stocked with.
   2. Grab the correct conductive ink from the fridge. It is labeled with a green sticker.
   3. Set the conductive ink on the table, allowing to begin to warm to room temperature.
      
      
2. Software Setup
   1. Download the files for this project here.
   2. Power on the Voltera.
   3. Open the Voltera Windows application.
   4. Select "Print" and then "Simple."
   5. Add the proper conductive ink. This is the same conductive ink you acquired in step 1.3.
   6. Load the ink file from the project files. This is the Top Layer Gerber file.
   7. Click "Next."
      
      
3. Cleaning the Sensors
   1. Take a cue tip and dip it into the isopropyl alcohol. The cue tip should be moist, but NOT soaked. Dab the cue tip on a paper towel to dry it slightly.
   2. Clean the calibration switches by rubbing them with the cue tip.
      
      
      
   3. Click "Next."
      
      
4. Clamping the Substrate
   1. Acquire a 1.5" by 2" blank board. They are located in the one of the drawers.
   2. Slide the board underneath the clamps on the Voltera, push the clamps towards each other, and finger-tighten the thumb screws.
      
      
      
   3. Click "Next."
      
      
5. Mounting the Probe
   1. Pull the probe from one of the drawers.
      
      
      
   2. Remove the cap and place it near the Voltera.
   3. Mount the probe onto the magnetic gantry. It should snap into place and the contacts should align.
      
      
      
   4. Click "Next."
      
      
6. Positioning and Probing
   1. Click "Outline." This will show you where the Voltera thinks the board is. It will move the probe around the printer surface.
   2. Repeat step one until the outline is centered with the board. Click and drag the circuit in the Voltera application to move the outline.
   3. You MUST ensure the outline does not collide with the clamps AND does not exceed the dimensions of the board! Do NOT proceed until this is checked!
   4. Click "Next."
   5. Click "Probe" and wait for the Voltera to finish its measurements.
      
      
      
   6. Click "Next."
   7. Remove the probe, replace the cap, place the probe back in the drawer, and click "Next."
      
      
7. Priming the Conductor
   1. Ensure 15 minutes have passed before beginning the next step. The dispenser should not be cold to the touch.
   2. Read carefully. The Voltera application explains this step well. Follow the on-screen instructions before moving on to the next step. Some tips/tricks/warnings:
      
      - Nozzles are fragile! You would be surprised how easy it is to break one. Treat this process with care!
      - Hold the dispenser over a paper towel to prevent ink from getting everywhere.
      - If you need to wipe the nozzle, do so gently and use a cotton swab found in the drawers.
      - Ink should not be flowing quickly out of the dispenser when you finish priming, but a very small amount of flow is OK.
      
      
      
      
      
   3. Mount the dispenser.
      
      
      
8. Calibration
   1. Click "Advanced." Start with the Z at 0.10 mm and the E at 0 um. Adjust the Voltera to these values.
   2. Click "Calibrate."
   3. The Voltera will lay down a test print. Pay close attention to the amount and consistency of the ink.
      
      
      
   4. The example below has slightly too much ink. Notice how a portion of the horizontal lines touch and some parts of the ink glob up.
      
      
      
   5. In this case, to make an adjustment, the ink height was set to a Z of 0.09 mm and the flow was set to an E of -10 um.
   6. You may need to do the same or make different adjustments. Whatever you do, do NOT run the nozzle into the board! The nozzle will break!
   7. If an adjustment was made, wipe the board clean with a paper towel (shown below) and repeat step 9.
      
      
      
   8. The example below is a more acceptable test print. Strive for this consistency. If your board looks right, proceed.
      
      
      
   9. Click "Next."
   10. Wipe the board clean a final time.
   11. Click "Next."
       
       
9. Top Layer Print
   1. The Voltera will print what is selected in green. Below is an example of a portion of the board selected. Ensure the portion you want to print is selected (in this case, select everything.) Remember that blue lines will not be printed.
      
      
      
   2. Click "Start." Let the Voltera finish its process. If a portion of the print fails or is incorrect, you can stop mid-print, or wait until it is finished and redo that selection. Also shown below is an example of a portion of ink that globbed up. The portion was wiped and can be reprinted.
      
      
      
      
      
      
      
      
      
   3. Remove the conductor, replace the cap, and return the conductive ink to the fridge!
   4. When you reach the "Flip Board," you are done. Quit the Voltera application.
   5. Unclamp the board from the Voltera. Remember that the traces are still wet.
      
      
10. Baking the Traces
    1. Switch over to the Reflow Oven.
       
       
       
    2. Power the Reflow Oven on.
    3. Select "V1 INK."
       
       
       
    4. The oven will warm up. When its ready, press "Enter" to open the tray.
    5. DANGER: The rails could be HOT! Take caution. Place the board securely on the rails.
       
       
       
    6. Press "Enter" to close the tray.
       
       
       
    7. The preheat will take 2 minutes. The baking process takes about 30 min.
       
       
       
    8. The drawer will automatically open to initiate the cool down phase. DO NOT remove the board until the oven says all the stages are complete. DANGER: The rails are HOT!
    9. When cool down is complete, remove the board from the oven.
       
       
11. Preparing for Solder Paste
    1. Take a burnishing pad from one of the drawers.
    2. Rub the substrate with the pad until the traces have a shine to them, rather than a dull appearance.
    3. Replace the burnishing pad back into the drawer
12. The Solder Paste
    1. At this time, retrieve the solder paste from the fridge and set it out to warm. The correct paste is labeled with a orange sticker.
    2. Take the board back to the Voltera.
    3. Clamp the board into place.
    4. Open the Voltera application and choose "Solder."
    5. Choose the proper paste. In this case you want the orange-labeled paste.
    6. NICK: we need to edit the gerber so that theres no solder paste on pads
    7. Like before, clean the calibration switches
    8. Mount the probe, next
    9. Click move to feature. This will the probe to a pre selected feature. It will not be aligned properly.
    10. First, use the arrow keys to roughly align the feature with the probe.
    11. Next, click Lower, and use the arrow keys to fine-tune the alignment. Your precision in these steps is key to getting solder paste in the correct places.
    12. Click Measure when the alignment is correct. The head will then move to a second feature.
    13. Repeat steps 9 and 10.
    14. Click Measure. The alignment is now finished. Click Next
    15. You can confirm alignment by clicking various parts and seeing if they are correct. If something is off, you can go back and realign if neccessary.
    16. Click Next.
    17. Click probe. This will measure the height of the board.
    18. Remove the probe and replace it inthe drawer.
13. Priming the Paste
    1. EXplain the priming process
    2. Mount it. Click next
    3. Click dispense. The paste will dispsnce onto all of the selected pads.
    4. Strive for good coverage of paste.See pic
    5. Click next.
    6. Remove the dispense. Twist the knob to back off paste. Put it back in the fridgeClick next
    7. Quit the Voltera app.
    8. Unclamp the board from the Voltera. Remember that you are now handling a board with wet paste.
14. Pick and PLace
    1. Clamp the board.
    2. Power on the Pick and Place. The switch is on the back
    3. Click place. Click Man
    4. To move the turntable, select turntable, and use the arrow keys to move it cw or ccw.
    5. The necessary components should be are stocked in the slots in the turntable.
    6. Turn on the Marshall monitor.
    7. The pick and place is a like a vacuum machine. Its operation is straightforward.
    8. Move the ganrty to the desired component. Press down (but not all the way) to stick the nozzle to the component. Move the gantry back to board. Move the component so it appears to be close the pads and about half a cm above it. Turn the brake on with the arrow keys. Use the fine adjustment knobs at the bottom of the machine along with the monitor to perfectly align the component. Remember you can move the camera to look down two different axes.
    9. When aligned, press place using the arrow keys.
    10. Move the turnable using the arrow keys to retreive your next part. Repeat steps 8 and 9 until your board is complete.
    11. Remove your board from clamps.
    12. Turn off the pick and place
15. Back to the oven.
    1. Power on the oven.
    2. Select V1 Paste. The warmup period is longer this time.
    3. Place your board in the oven like how you did the ink Rememeber the RAILS ARE HOT. Press enter
    4. Reflow takes about three minutes. When its done, the board will eject. Do not touch the board when it is in the cooldown stage. The paste is actually soldifying. The oven will tell you when the entire process is complete.
    5. When complete, remove the board. The rails are probably still hot! Press enter to close the oven drawer.
    6. Turn off the oven
16. Testing!
    1. Take the board over the power supply.
    2. Ensure to use the fixed 5V connection on the power supply. Attach the positve and negative leads. Power on the PSU, and press the button. The LED should illuminate!

Congrats! You're done. Got it all? Good. Why don't you go ahead and take the quiz.

Usage

The Perfect Print

Two main factors affect the quality of your print.

Questions

1. What

Priming Conductors

Ideally, you should never have to prime the conductors. After a conductor has been primed correctly and used in the Voltera, it "closes" the dispenser. When done, you should be able to pull it off the mount and put the --- back in the fridge.

However, this is not always the case. If a student

Changing a Cartridge

1. Remove the nozzle CAREFULLY
2. Dissamble sheath by twisting green part clockwise
3. Remove dispenser
4. clean dispenser
5. press downwards on the sheath to loose the cartridge
6. remove the cartridge
7. proceed to chuck the cartridge in the nearest garbage can
8. wind the dispenser clockwise until it cant clockwise anymore
9. acquire new cartridge
10. remove top and bottom green caps SAVE THEM
11. insert the cartidge with the label facing the back, in other words, the label should not be viewable through the window on the sheath
12. insert the dispenser and lock it in by twisting the green part counter clockwise
13. carefully REPLACE NOZZLE, use fingers first and then pliers!44