Celestron Binocular Tripod Adapter Kupo KS301411 The Arduino Pro series is

The Arduino Pro series is meant for users that understand the limitations of this lack of connectors and USB off board

Two bubble levels

It also utilizes an extremely common parallel interface so code is freely available (check below for an Arduino example)

Designed for Projectors

Celestron Binocular Tripod Adapter Kupo KS301411 The Arduino Pro series is1 4" 20 Tripod Mount 1 4" 20 Binocular Mount No Tools Required Celestron 's Binocular Tripod Adapter allows you to use your binoculars with a tripod to eliminate fatigue and offer a stable platform with greatly reduced shake. It has a 1 4" 20 stud with a large thumbscrew for tool free installation on your binocular, and a 1 4" 20 mount for the tripod. UPC: 050234935241 Weight Not specified by manufacturer Packaging Info Package Weight 0. 2 lb Box