This is a kit to use a standard HDMI cable between the Raspberry Pi and its camera. The biggest advantages are obviously the range increase, the possibility to use widely available cables, and to use a round and sturdy HDMI cable instead of a flat ribbon. Note that this is just an extension between the camera and the Raspberry Pi. Four additional pins are available, this may become handy to use a few sensors with low current requirement along with your camera. The parts in the kit are shown in the third picture, every board is tested before shipping. This system works with all Raspberry Pi models.
I am using the Pi camera outside the house and close to machinery so I needed a longer and stronger cable with solid connections. Searching the web I did not find anything usable for my application. However a thread on the Raspberry Pi forum gave me the idea to try using an HDMI cable for extension. By comparing the diagram of the Pi Camera connector and HDMI connector one can see that both have four data buses made by pairs of cables with a ground shield. My only work was to put the right cable at the right place!
I have tested successfully simple 5 meter HDMI cables, cheap or expensive cables worked the same. The video signal should not show any degradation until a certain distance (yet to be found).Passed the limit the video signal will be lost entirely. I have not tested HDMI boosters or HDMI conversion to CAT6, please report if you do.
Assembly is simple but require precision to place and tighten the small M2 screws (4mm). To reproduce the setup shown on the first picture:
1 - Assemble the 60mm flat cable between the camera and board, watch carefully the picture for the side of the cable; the connections face away on the extension board and toward the camera.
2 - Lock the connectors in place, here it helps to have long nails. This is mandatory for a good connection.
3 - Place the boards back to back, the flat ribbon should form the shape of an "S".
4 - First with your fingers and maybe tweezers set a screw and spacer loosely. Set another on the opposite side and tighten a bit. Then place the two remaining screws, tighten everything with a small screw driver and a 4mm wrench or a pair of pliers. Et voila you are done!
If after plugging the camera with this kit the Pi does not detect it, you may have bought an HDMI cable without data shield. Please read my blog post that explains an easy fix.
I made a case for 3D printing (not sold with the kit). The files can be downloaded on Thingiverse. Please post modifications you made.
"moonshinesg" has made a very nice case, he uses two of the additional pins to carry 12 volts to an ring of LED. He reports no degradation to the video signal. Case with LED ring
A note about shipping:
I offer priority Air Mail; for most countries the package should arrive in a week. Lately the customs of a few countries decided to check most mail from France; it looks like they have a huge backlog, so if you are not lucky your package could take a month to arrive! Even if air mail does not have a tracking number from my experience it is very reliable, the tracking option gives a bit more security if you wish. Please note that I cannot be held responsible in case of package loss or wrong addressing if you choose to use the Air mail option.
|Shipping Rate||First item||Additional items|
La Poste: Priority Mail, without tracking
La Poste: Priority with tracking
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Engineer by day, electronic tinkerer by night.