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Motor and Wire Protection
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I purchased a CAME-TV 7500 pre-assembled gimbal. I like it a lot and it is a pretty good deal and works well out of the box. The one thing that I don't particularly like is that it seems that there are too many exposed parts and wires. The sensors are just exposed circuit boards, sharp connectors and their wires stick out on the edges, waiting to be snagged on something, and the motors windings are exposed.
My plan is to provide some protection, by using some spiral wrap covers over the exposed wires, some cable guides to protect the entrances and connectors, and tape to cover and hold against the gimbal a lot of the dangling wires (wrapped in spiral cable wrap.) I'm going to try to use some transparent weather sealing tape, it's kind of thick and smooth and conforms to surfaces, but isn't too sticky so it can be removed fairly easily. I also planned to cover the exposed parts of the motors with the tape as well. I also plan to put some plastic covers over the exposed sensor circuit boards.
I am slightly concerned with covering the motors with tape, I assume they won't overheat because there is still space for air to get in and out through the gaps around the circumference of the motors. I also assume covering the sensors with some polyethylene hard plastic will not hurt their performance.
Has anybody else done this to their gimbals and am I on the right track? Am I wasting my time? Thanks much for any advice! -Keith of http:///techmovepodcast.com -
anybody???
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Yes, it would be good idea to protect the electronics. I put the electronics to IP54 rated box, protect and route the wires carefully and cast the IMU to epoxy, first I solder the wires, the connector would not like epoxy. I use closed motors GB85 and GB90. And the joystick and buttons are water proof also, but I am not building any low cost gimbal, the motors and controller alone are the price of the CAME-TV 7500...
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Thanks Garug. Nice videos of your work, you are obviously very passionate about your gimbals. I am a neophyte who just doesn't want my gimbal to break the first time I shoot in the wild with it. Overall though I'm pretty happy with the CAME, I have no idea of the quality of the parts, but I assume the controller is a Basecam a 32 bit latest board, but I'm not actually positive. So I assume if I cover the motors it won't cause a problem with heat, and covering the IMUs won't cause them to malfunction. I think whatever they put into the CAME 7500 can carry up to 2KG. Right now it has a wired in joystick which works ok but I also wanted to be able to use a RC controller to move the gimbal. Do you know if there is an easy way to accomplish this? I also hear you can use Bluetooth and an Android app to control it, any clues where to find out how to add this as well? Again thanks so much for your help. -Keith http://techmovepodcast.com
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I only have the one that came with my DJI Phantom 1, but I supposed I could use this. If not I can purchase one, they seem to be pretty inexpensive for the transmitter / receiver combos, any suggestions and pointers to a product that is known to work and instructions on how to set it up? -Keith http://techmovepodcast.com
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I figured the CAME 7500 wasn't the best of course. I had just seen videos from people that had the CAME 7000 and had similar cameras that I had, and I was impressed. Perhaps sometime in the future I could retrofit some better parts. It was cheap and pre-assembled and that was the draw for me. If I had to build one myself I don't think I would have gotten it. This is my 'dipping my toe' in the water for gimbals, as I've been using professional Steadicams for years. Thanks for your expert advice, Garug!
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I am not familiar with the Phantom, does it use DBUS receiver, if it does, it should be effectively the same as futaba SBUS and the 32 bit boards accept SBUS (I am just testing and works great)
So if it uses DBUS receiver you could get and try it, it probably works but I have not tested it.
It will require only one 3 pin wire between the receiver and BaseCam board. You probably need to solder a jumper on board to get 5 V power for the receiver.
For the really inexpensive transmitters I like a lot the Orange T-SIX DSM2 transmitter. If you have a DSM satellite port on your board this would probably be the only solution not to need to solder anything. (assuming +5V is not connected on your board, it usually is not)
But with DSM satellite receiver you need to get also a DSM receiver with satellite receiver connection. This is need to pair it with the transmitter (and you also need battery or other 5V power source to power it for the pairing) I have not tested yet the DSM connection but have no reason to doubt that it would not work.
You could also get a traditional PWM receiver for the T-SIX or any transmitter. That requires a few more wires and the +5V available on board, but does work for sure. -
@Garug - I opened up the enclosure so I could take a couple of pictures of the board, front and back. With this information for you, if I wanted to get the best / most compatible basic transmitter and receiver combination, what would you suggest? If you could tell me which pins to connect to - I assume I will have to solder to one of the unused holes for +5v, but would prefer not to if possible. I would also like to control focus and zoom eventually through the same transmitter / receiver (though I know that would be a separate controller board for that). Thanks so much! - Keith http://techmovepodcast.com
http://www.silverspotmedia.com/For_Basecam/IMG_6899_2.jpg
http://www.silverspotmedia.com/For_Basecam/IMG_6914.jpg -
On the right hand upper corner there seems to be a 0 ohm resistor where it says +5V, I am not sure, but I think +5V is probably already connected. If you have multimeter you could measure.
It would be good to know what inputs the follow focus will accept. You could of course bind separate receivers for both, but maybe the simples thing to do is to get a traditional receiver with the servo connections (PWM).
The PWM connections from receiver are connected to any of the PWM inputs on the board and configured on GUI. Standard servo cables can be used (female connector on each end) and no soldering needed if the +5V is already available on the PWM connectors
As for transmitter, maybe it would be good to have side sliders or knobs for follow focus. Those transmitters are normally a bit more expensive. -
@Garug - by PWM connectors do you mean the group of 15 pins on the right side top side of the board? So I assume because there is a jumper across the +5V that this leads to some power connector on these 15 pins? I do have a multimeter, which pins should I check for the 5V - is it the middle column of pins and the right column is ground? And if I use a PWM receiver / transmitter do you have a recommendation? Thanks much! -Keith http://techmovepodcast.com
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If I wanted to use my DJI phantom transmitter, I just found this receiver on eBay, wondering if something like this would work it seems to say it supports PPM, but not Sum-PPM. http://www.ebay.com/itm/2-4G-6-channel-Receiver-for-DJI-Phantom-radio-system-transmitter-pitch-controll-/131041017953?pt=Radio_Control_Parts_Accessories&hash=item1e82a74061 - Just checking…. -Keith http://techmovepodcast.com
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