EZ-Key Headers

Count two sets of 12 right angle headers and break them away. Insert the headers into the EZ-Key from the top as shown and secure them with a piece of masking tape. Secure the board into a holder and begin soldering all 24 connections.

I prefer to add headers to the EZ-Key because it makes it very easy later to disassemble the unit should I want to make changes or use it in another project.

Jumper Wires

Pull four jumpers away from the bunch. The colors don't matter as long as you make the right connections. Snip the male leads off of all four jumpers (we won't use them). Strip about 1/8" of insulation away from the cut end and twist the bare ends.

Two leads will connect the EZ-Key to the charge controller and two will connect the button to the EZ-Key.

Charge Controller Jumpers

The EZ-Key will be powered from the charge controller. Take two of the jumper wires and solder them to the two holes labeled "LOAD" as pictured.

Arcade Microswitch Jumpers

The massive arcade button includes a standard microswitch. The switch type is a "NO" which means "normally open." Pushing the button will cause the two jumpers to become connected. This is what triggers the EZ-Key to send a key press.

Take other two jumper wires and solder one to each of the terminals. It doesn't matter which one goes where.

Snap the microswitch into the button assembly along with the included LED. We won't be connecting the LED in this project, but install it for safe keeping.

Insert the button assembly into the massive red button from inside the box. Insert it and twist to lock. Once it's in, you should hear a distinctive click when you press on the red dome.

Dry Test

Let's test to make sure we're getting power from the battery through the charge controller to the EZ-Key.

Connect the jumpers from the charge controller labeled "LOAD" to the EZ-Key. Connect plus (+) to "VIN" on the EZ-Key and the minus (-) to "G" on the EZ-Key.
EZ-Key Charge Controller
VIN LOAD Plus (+)
G LOAD Minus (-)
Make sure to observe the correct polarity when connecting the EZ-Key to the charge controller!
Plug in the JST connector from the battery to the charge controller labeled "BATT."

The red light on the EZ-Key should now begin blinking. If so, congratulations! If it doesn't light, the battery may not have enough power. See the step below to charge the battery first before assembling.


Cut short pieces of double-sided foam tape and stick it to the back of the battery, charge controller and EZ-Key. Remove the backing and stick the three inside the box in close proximity. Connect the battery and EZ-Key to the charge controller as in the dry test above.

Attach the button jumpers to the EZ-Key. One lead will go to pin 0 and the other will go to any of the leads marked "Grounds."

Charge the Battery

Charge the battery by connecting it to USB via the port on the rear. The yellow "CHRG" LED will light up. When the charge is complete, the green "DONE" LED will light up. You can unplug the veto button and move it anywhere in your office (within it's range).

This guide was first published on Mar 16, 2014. It was last updated on Mar 16, 2014.

This page (Wiring and Assembly) was last updated on Mar 04, 2014.

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