Hello World: Print

Hello World

The Hello World circuit is a basic LED circuit. Holding a 9-Volt battery to the   and  terminals on the circuit provides power, and a 555 timer integrated circuit (IC) controls the signal that flash the LEDs at a frequency determined by the resistors and capacitor. We have included all the materials and components you need to print your first circuit in the Hello World kit.

Hello world


1. Open the software

Sw Start Screen

When you open the Voltera V-One software you will be welcomed by the start screen. Our software will guide you through the steps of each feature as you go. Let’s review them quickly:

  • PRINT: Allows you to print your designed circuit pattern onto a blank FR4 board.
  • SOLDER PASTE: Allows you to dispense solder paste onto fabricated or V-One printed boards.
  • REFLOW: Allows you to reflow components onto fabricated or V-One printed boards.

To begin printing your first circuit, select PRINT.

2. Loading Circuit

Take a moment to familiarize yourself with the software interface. Instructions will be presented on the left, and videos are displayed on the right.

  1. Click the Hello World hyperlink in the instruction panel.
  2. Wait for circuit to load.
  3. Click Next.
Print Preview


1. Clamp the Board

The clamps have 2 ledges, which are marked CLAMP and BAKE. The CLAMP side is what you will use now to secure the board during printing and later during solder paste dispensing, while the BAKE side will be used when baking the board after a successful print. 


  1. Secure the board underneath the CLAMP ledges, and push the clamps inward against the board.
  2. Screw down the clamps so that the provided thumb screws are finger-tight.
  3. Make sure the board is fully secured.

2. Mount the Probe

 The contact pads at the back of the probe should be aligned with the probe contact pins on the carriage.


3. Click and drag the circuit

In this step the V-One will ensure that there is a clear print path on the clamped board. The probe tip will outline the boundary of the area to be printed. If you see the probe tip passes outside of the board while outlining, click and drag the circuit to adjust the position and outline again.

4. Probe

Outline look good? Go to the next step and click PROBE. The V-One will now automatically generate a height map of the board’s surface. This height map is critical for good quality printing. 

 If you need to move the board for any reason after this step, you must return and RE-PROBE!


1. Prime conductor

Priming the conductor is important to confirm good ink flow before dispensing.

  1. Slowly turn the gear counter-clockwise until you feel resistance (this is the dispensing plunger hitting the ink).
  2. Keep turning until you push a tiny amount of ink out of the nozzle.
  3. Rotate the gear ¼ turn clockwise to stop the flow of ink.
  4. Wait until the ink stops leaking from the nozzle and gently wipe the nozzle clean.

2. Mount dispenser

Make sure that the nozzle is completely clean. If there is still ink residue, gently wipe clean.

 Confirm that the dispenser gear is completely engaged with the carriage gear!


Calibrating the conductor will determine the resolution of your print, so pay close attention to this step and take your time!

Clicking START will print the calibration pattern.

Use the curved lines to make sure enough ink is coming out. Then, adjust the horizontal lines so they are not touching – even a small gap is enough!

You can adjust the width of the printed lines while printing by controlling the amount of ink dispensed with the  and  buttons:

  - Dispense more ink by a tiny amount. Makes lines thicker.

  - Dispense less ink by a tiny amount. Makes lines thinner.


You are now ready to print your first circuit! So go for it, press START!

Once the print is complete your circuit should look something like the image below: 


Does your circuit look different?

If the pads are touching each other (shorted) that means there is too much ink. Wipe the ink and repeat the calibration step. 

If there are gaps in the circuit, try our selective printing feature! Select the broken area in the print preview, and click START

Want more control when selecting features to print? Try the following!

  • Click and drag to select multiple features at once.
  • Holding the SHIFT key while selecting features will let you add to the current selection. 
  • Holding the CTRL key when selecting features will remove them from the current selection.
Selective Print


Your circuit is printed, but we can’t do much with wet ink … that’s what baking is for! We are about to dry the conductive ink. Remove the conductive ink dispenser from the carriage. Cap the dispenser, and store it in the refrigerator.

When flipping the board, keep the following in mind:

  • Push the clamps in so they are flush with the board.
  • Make sure that the board rests on top of the baking ledges.
  • When flipping the board be careful not to smear the wet ink!

 The V-One gets hot! Do not touch the printer while glowing red.


You have printed your first V-One PCB! This completes the first print guide.

When you are ready to assemble your circuit, continue to the next section where we lead you through the V-One solder paste and reflow features.

Can’t find what you’re looking for?

Our customer support team is here to help. 

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