Monthly Archives: June 2015

Air Pistol Shooting Target Controller

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Pictured below is a controller we recently made for competitive air pistol shooting training.

Shooting Target ControllerOn the shooting range there is a target connected to a motor. If the motor is powered for one second with one polarity, the target will turn to face the shooter. If the motor is powered for one second with reverse polarity, the target will turn edge on to the shooter. (Click here to see how we reverse the polarity of a motor with two relays – alternatively, we could have used an H Bridge motor controller.)

The controller has two buttons, and also screw in terminals so that external buttons can be added in parallel if the controller is to be enclosed. One button is used to toggle the target position – to edge it when it is facing, and to face it when it is edge on. The second button is used to start the training routine.

When the start timer button is pressed, the target will be turned edge on to the shooter. Then after seven seconds, the target will be turned to face the shooter for three seconds. This edge for seven seconds face for three seconds is repeated five times, and then the target is edged to wait for the next shooter.

If you need any kind of automatic timer controller board, email neil@reuk.co.uk with details of your requirements.

12V Low Voltage Disconnect with Warning Buzzer

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Pictured below is a 12V low voltage disconnect circuit with a low battery warning buzzer.

Low voltage disconnect with warning buzzer sirenWe sell a wide range of low voltage disconnect circuits in the REUK Shop as well as producing many bespoke LVDs on request. This particular circuit is based around our standard user programmable mini 12V low voltage disconnect, but enhanced to have a buzzer which sounds for one minute when the low voltage disconnect is triggered by 10 continuous seconds of low voltage measured on the battery. This warns the user that they need to take measures to recharge the battery.

There is also a switch on the circuit board so that the buzzer function can be turned off when not desired/required.

If you need any kind of low voltage disconnect, please email neil@reuk.co.uk with details of your requirements.

Time Lapse Photography Controller

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Pictured below is a time lapse photography controller we recently made for a customer who is using it at a remote site.

Automatic programmable time lapse camera controllerRather than leaving the camera and MiFi (mobile Wi-Fi hotspot) constantly powered (necessitating a large battery), this controller turns them on only when they are needed – first MiFi is turned on, then 45 seconds later the camera is turned on, and then a further 15 seconds later a relay tiggers the camera shutter to take the photograph. The camera and MiFi are then left on for a further three minutes (so that the photograph can be processed by the camera and uploaded).

A programming button is provided which enables the photographer to take one shot every 5, 10, 15, 20, or 25 minutes etc, and once set up, this controller will run autonomously indefinitely, taking photographs at the required time interval and uploading them to the cloud server.

If you need a time lapse camera or similar timer controller, please email neil@reuk.co.uk with details of your exact requirements.