Single & Dual Head Units

Choose what works for you.

Let's start the explanation beginning with the units shown above. The unit on the left is the Single Head unit and the unit on the right is the Dual Head unit. The Single Head unit is capable of launching one target (a single) while the Dual Head unit is capable of launching two targets (doubles). Your choice between the Single Head or the Dual Head is quite simple. If your shooting goals (the disciplines and targets you want to master) are all single targets, then you should purchase the Single Head unit and save $300.00. On the other hand, if your shooting goals include doubles or pairs you will want a Dual head unit. The Dual Head unit is capable of moving two targets across the wall simultaneously.

The physical size of the two units are the same (6” x 6” x 4.25”) and can sit on a table, be mounted on a camera tripod (the base of the DryFire unit has a tapped hole into which the tripod can be fastened), or mounted upside-down on the ceiling.

Inside the green chassis there is a Printed Circuit board which contains all the necessary electronics to communicate with a Windows based computer through a USB cable while controlling all the actions of the moveable heads. Also mounted within the chassis is a servo used to move the head in the horizontal axis. Each head contains a visible laser, a digital camera, and a servo to control the vertical movement of the head.

Under control of the DryFire software, a visible laser dot (about 3/16th of an inch in diameter) is moved across the wall in front of the shooter. The movement of the laser dot across the wall will replicate the trajectory of the outdoor target. Essentially, it is a two dimensional version of the outdoor target. Because everything is scaled, the resulting movement of your gun, indoors, will be identical to the movement of your gun outdoors.

As the target laser is being moved across the wall, a digital camera is watching all around the target laser. It is filtered and looking for infrared light. You have equipped your gun with an infrared laser and as the target moves across the wall and you move your gun to what you think is the perfect lead, you pull the trigger. When you pull the trigger, a highly focused infrared beam strikes the wall in the vicinity of the target laser. The camera sees the event, sends a signal to create the sound of a gunshot and records the exact relationship between the target and your gun. Based upon this picture of the relationship between your gun and the target the DryFire software will determine the exact relationship between the center of the target and the center of the shot-cloud (your pattern).

Computers are so fast that the answer to this complex question is computed in about 50 thousands of a second. If DryFire determines that you would have broken the target outdoors, the target laser is turned-off. This is your first visual indication you broke the target. Just like outdoors. If you missed, the target continues to travel across the wall giving you another opportunity to shoot the target. If you miss the target the second time, the target continues to fly until it hits the ground.

When the first shot is taken, the results of the shot are visually displayed on you computer monitor. If you missed the first shot and take a second, the following happens. The results of the first shot are shown on the left half of the monitor and the results of the second shot are shown on the right side of the monitor.

Targets can be released using anyone of five methods:

• Voice release
• Depressing a key on your computer keyboard (the space key)
• A handheld wireless pushbutton
• A footswitch
• A timed auto release

The green chassis receives power from two sources:

• The USB cable supplies +5 volts DC
• A DryFire supplied AC to DC converter supplies +5 volts DC for the servos