The EasyFocus Stepper Interface will work with just about any unipolar stepping motor and is pin-for-pin compatible with Robofocus motors.

This is a unipolar stepper motor focus controller that will work with just about any 12V unipolar stepper motor and is pin-for-pin compatible with the popular Robofocus stepper motors. This controller works with any ASCOM compliant program such as FocusMax and others. It is an absolute focuser and provides for excellent auto-focusing results . To see a typical VCurve Wizard run using the EasyFocus Controller click here.

EasyFocus Stepper uses a high-quality, professionally manufactured printed circuit board.

These units are built using solid-state electronics that greatly increase reliability and robustness. The EasyFocus Stepper controller is an absolute focus controller which insures that focusing is precise and pinpoint accurate. To top it all off it includes a built-in solid-state temperature sensor and the ability to perform temperature compensated focusing!

This unit comes with a serial cable and a motor cable as well as an ASCOM driver that is available here. Just download the zip file, and follow the instructions in the README text file.

An online manual for the EasyFocus Stepper Interface is available here.

Unit Price $219.99

Shipping and Handling Free!

The Gemini stepper interface comes with the control unit and a cable to attach it to the Gemini feature port and to power it from the Gemini DC power out jack.

This is a unipolar stepper motor focus controller that will work with just about any 12V unipolar stepper motor. The Gemini Stepper Interface will work with Hurst unipolar stepper motors and is pin-for-pin compatible with the popular Robofocus stepper motors.

The Gemini Stepper Interface uses a high-quality, professionally manufactured printed circuit board.

These units are built using industrial grade solid-state electronics that greatly increase reliability and robustness. The Gemini stepper interface will drive a stepper motor at 3 different speeds; fast, medium and slow. The speed of fast, medium and slow is user programmable. The Gemini Stepper Interface supports half-stepping for finer focusing resolution if desired, and the direction the motor turns when the focuser is moved in or out, can also be reversed. The Gemini stepper interface can be powered with any voltage from 12V to 18V, so it's 100% compatible with the Losmandy Gemini. An internal low-drop out voltage regulator steps the voltage from the DC power out jack of the Gemini to 12V before it is delivered to the motor. If you are powering your Gemini with 12V, then the low-drop out voltage regulator can be bypassed.

An online manual for the Gemini stepper interface is available here.

Unit Price $159.99

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Shown cabled to a JMI NGF focusing unit, but will work with JMI Motofocus too. To see unit cabled to a Motofocus click here. To see unit cabled to a relative focus motor click here.

This is a low-cost DC motor focus controller that will work with any ASCOM compliant program such as FocusMax and others. It will work with DC motor focusers with or without encoders or in other words it will work in absolute or relative mode. To see a typical VCurve Wizard run using the LazyFocus Controller and a JMI NGF-CM focuser click here.

LazyFocus DC Motor Interface uses a high-quality, professionally manufactured printed circuit board.

These units are built using solid-state electronics that greatly increase reliability and robustness. The LazyFocus DC Motor Interface utilizes electronic braking to insure that focusing is precise and pinpoint accurate.

This unit comes with a serial cable as well as an ASCOM driver that is available here. Just download the zip file, and follow the instructions in the README text file. The cables you have with your JMI NGF or Motofocus focuser will work with this unit.

An online manual for the LazyFocus DC Motor Interface is available here.

Unit Price $159.99

Shipping and Handling Free!

My guarantee is simple. If you are not 100% satisfied with any item you purchase from me, then simply return the item to me at your cost within 10 days of receipt of the item for a full refund; including shipping costs! I will of course have to determine that the item was not damaged or abused before issuing a refund. Assuming that is not the case, you will receive an immediate and complete refund as soon as I receive the item and can verify its condition.

In the unlikely event that you should receive a defective item, I will replace the item entirely at my cost, or issue you a full refund, which ever you prefer.

I do my best to design and manufacture devices that are robust and worry-free. But it is impossible for me to predict how every user will try to use a device in the field. Therefore, you should read and agree to my disclaimer that you can find here.