Lee Daley shared his DIY HD Wireless monitor solution via Twitter [Thanks Lee]. My solution is based on the discontinued Asus WiCast (seen here) and powered by Tekkeon batteries. Those Tekkeon batteries work great, but aren't very small so my solution isn't the best option out there.
Lee is using a different more affordable consumer Wireless HDMI streaming kit. Powering the receiver through what looks like a cheap CCTV battery pack and the HDMI Transmitter is much smaller and can be powered through the USB port of the SmallHD DP6.
These consumer HD streaming kits work great. They don't offer incredible range, but it will keep you untethered to move around and share your video feed (to a director). The kit he uses is often rebranded and you can see how it looks exactly like the one he's using (above). You can be find this kit on eBay for just $160 bucks.
Wireless HDMI Streaming Transmitter Receiver
All of these devices use a variation on the same reference boards from AMIMON. The reason they overheat is because they use these little millimeters thick rubber-like sheets in between the major components and the aluminum heatsinks. The solution is to replace the rubber with copper shims. Add a thin layers of thermal paste to both sides of the shim to ensure good thermal transfer. Then sandwich it all together.
The heat sink has to sit evenly across components so the thickness of the copper has to match the thickness of rubber sheets. Use a metric micrometer to measure the height on each rubber like sheet or a small accurate metric ruler on a flat surface. Most of the time the sheets come in regular thickness increments, .5mm, 1mm, 1.5mm, 2mm etc.
Ebay link: https://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=copper+shims&_sacat=0
This trick works for overheating laptops, mini-pcs, just about anything that uses worthless rubber sheets.
@Greg Looks like a good choice as it's a compact size. This unit also heats up real quick but I've had it running none stop for an hour today while I was doing some tests and had no adverse effects. For power I did try running the receiver of them 4x AA battery box's but it seemed to screw up the signal some how so I switch to the CCTV batteries.
It's called a HP Wireless TV Connect. If you google it, I believe mine is the newer smaller version. I try to unplug it when not in use during shooting, because the receiver seems to get pretty hot constantly on for periods at a time.
I'm sure most of these Wireless HDMI devices work equally well. Distance may be a factor for some, but the technology is all pretty similar.
I have used this one before but the coverage is not more than 20 meters (when no blockage or wall) but the reception gets worst once there is obstacle (wall especially).
The Transmitter is really handy though but I have not seen a receiver any smaller than this? May I know which model you are having @Greg?
@Greg , I was talking to Emm actually 🙂 But I have too checked out the lapdock for this use but I decided to go for the cheaper solution and take what I have, and at the same time get a bit bigger screen at 19" 4:3 which seems perfect for canon DSLR usage at least. 🙂
@Felix are you talking to me, or Emm? I have my setup connected to the Motorola Lapdock, and everything is self powered from either the DP4 or Lapdock, which is amazing.
That's just about the same setup I'm using. I am converting it to a mor stationary build in a hard case with 19" screen for wireless follow focusing for professional steadicam use.
Keep in touch if you want to publish anything or need ideas for yourself, I noticed that you were looking to build something similar.
I used a very similar HDMI HP WHDI device I found used on eBay. The small dongle looks pretty similar to this consumer off-brand one listed, which also has a USB powering system where I plug into my SmallHD DP4. The other end of the wireless device is the receiver, but it is much smaller in size where I can mount it on the back of a small client screen. Gets a little hot though.