![]() The good news is that you have a fully constrained sketch to work from. Right, so you're really, really, serious about designing something. Arguably this takes longer, as you'd have to model the gear teeth yourself, but it is all free. If you don't have access to CAD - try your local hackspace or if you are wanting to use free software, I would suggest On-Shape or 123D - there you can either import the SolidWorks files and modify them or create them from scratch. If not, and you want to do better than YouTube videos, then there are excellent tutorials on CAD Junkie. If you're familiar with SolidWorks, you'll be able to model the nut and bolt features quite comfortably, I suspect. The other selections/parameters just keep the same (or at least the same between both gears): Face Width (width of the gear) = 10mm (you can make this smaller/larger if you like), Module = 0.7, Pressure Angle = 20, Hub Style = None, Keyway = None.įinally, "Save As." the individual parts, and then take them into your main assembly do that you can build upon them. ![]() Nominal Shaft Diameter (the hole in the middle): Large Gear = 80, Small Gear = 22 Number of Teeth: Large Gear ( Lens) = 120, Small Gear ( Servo) = 36 It is quite simple to just 'muddle-through' and adjust the parameters and it updates 'live', so you can see the part changing in real time! From the drop-down menus, you only need to vary two things between each of the gears: However, if you are not a Mechanical Engineer, rest assured you do not need to understand everything to still get what you want out of it! Gear Design tends to rather 'throws you in the deep end' of CAD and Engineering, with a lot of unfamiliar terms. They were created in SolidWorks, using the 'ToolBox' function. The basic forms of the gears are shown here. However, if this does not apply to you and you only really need it for this project, you'll be pleased to know you can get a short free trial! Hurrah! If you'd rather start from scratch, create your own add-ons, you can also try Fusion360 and OnShape. However, most students get it for free/very low price. It usually costs a fair bit of money, by hobbyist standards. It has been designed and documented here to allow others to improve on this idea through Open Source sharing of the both the 3D Printable Hardware, and Software. This first version of Zocus is featured on the BBC2 Documentary - Big Life Fix. The Zocus' Electronics cost less than £90, which means if you have access to a basic Soldering & Electronics Equipment - and 3D Printer (local maker spaces or hobby clubs often have them) it is quite cheap to build for yourself or someone who needs one! However, if you do need to order 3D Printed Parts, this can be done from companies like Shapeways, for around £110, bringing the total to around £200: This reduction is cost may also be attractive to enthusiasts and film-makers who are working on a tight budget. Very few (if any) have free Apps which work with tablets/smartphones.Many Follow-Focus rigs are for professionals only, and so are costly (£thousands).Many Follow-Focus rigs are controlled via a large wheel/dial, which James couldn't operate.Turning the Zoom ring on a lens is often far more difficult, (high torque) than only the Focus ring.Both Focus and Zoom must be controlled button/dial-free.James wanted to master this art, and feels it is not enough to take pictures on his smartphone - he wanted full creative control of a professional DSLR camera, to frame and focus the world as he sees it.Īlthough there is a staggering amount of Follow-Focus gear out there, it often struggled to fulfil James' brief: It was originally developed for James Dunn, who is passionate about photography, but who also had a condition called Epidermolysis Bullosa, which made his skin to be very sensitive to even slight pressure - causing him pain and frustration when trying to operate fiddly camera buttons or scroll/jog-wheels. Zocus allows you to wirelessly control the Zoom and Fo cus of your DSLR Camera, via the Bluetooth enabled ZocusApp, on iPad or iPhone (Android coming soon).
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