Showing posts with label 3D Printing. Show all posts
Showing posts with label 3D Printing. Show all posts

Sunday, February 24, 2013

3D Printed StarTrek Style Flip Phone Case

Motorola A760Kogan have announced their low cost "Agora 5 Inch Screen Smartphone". I have suggested they provide the phone dimensions in a CAD file, so we can 3D print our own cases. What I would like is a hard hinged cover to turn it into a StarTrek style flip phone, like the Motorola A760.

The Motorola A760, had a cover over its touch screen which hinged up to provide the ear-piece. There were no electronics built into the cover, it simply had a hollow channel to carry the sound from the body of the phone to the top of the cover. This same design should be able to be applied to any slab style phone. It would allow the ear-piece to be molded to more comfortably fit the ear, reducing background noise. It also positions the phone's antenna further from the user's head, improving signal strength and reducing radiation hazard.

The Kopgan Agora Dual Core Smartphone specifications indicate that it has some interesting features. It has an unusually large 5 inch screen, but only 480 x 800 pixel resolution, much lower than other large screen phones. But this may not be a problem as I have trouble seeing the text, let along the pixels, on the average phone.

Also there are two Mini SIM sockets allowing the phone to be used on two mobile phone networks at the same time (one 2G connection and one 3G). Previously I tried a dual SIM phone, the idea being that I could use a 2G SIM for voice calls and the 3G SIM for data (separate data plans being cheaper than those bundled with voice plans). This did not work well in practice as I found that each time I made a voice call, the data service was cut off. It was not clear if this was a problem with this phone or a limitation of all such dial SIM devices. The phone I purchased  (a Huawei Deuce U8520 Dual SIM Android Smart Phone) also has a battery which lasted only an hour and the phone would lock up and randomly reboot. I returned the phone to Allphones at Belconnen (Canberra) in 2011 for repair, but have heard nothing since (no repair and no refund). As a result I am wary about the dual SIM devices, however I found Kogan's after sales support to be excellent with the two Kogan Agora Laptops I have purchased previously.

Wednesday, January 23, 2013

3D Printed Parts for Toilet?

Toilet Tank Fill Valve
One way the Internet can help the environment and the community is by providing advice on replacement parts and instructions on how to repair, rather than replace products. One example is keeping a flush toilet operating. Older cisterns use more water, but can be upgraded to a dual flush and the outlet valve can be repaired if you have instructions. Most recently the inlet valve was leaking, wasting water and making an annoying noise. A replacement toilet fill valve is around $15, but I only needed the $4 Ballcock Replacement Seal.

Apart from saving some money, replacing a seal or washer, rather than the whole unit, results in less material thrown away. However, it can be difficult to work out exacly what needs replacing, how to remove it and what to get. I found Graeme Hawkins video "How to replace a ballcock washer in a toilet cistern" very useful (complete with New Zealand accent). But for hardware stores to stock large numbers of seals and replacement parts is a problem

 Perhaps a 3D printer could be used to manufacture these parts on demand. University of Washington students are reported to have 3D printed a whole toilet.

ps: The Canberra "Make, Hack, Void" is holding a free conference to show off some of their work (including 3D printing).  MHV MakerConf 2013 is 2 February 2013 at the Australian National University in Canberra, in conjunction with LCA2013.