30 pin HDMI AV adapter with 30 pin to lightning adapter

[pgudge]

Me being tight.

I need a HDMI adapter for my iPhone5s, they are £40! If I bought a 30 pin connector to HDMI (£8), and put the 30pin to lightning connector (£3) on the end, do you think it would work.

I appreciate it would be easy to test, but that could be £11 towards the proper adapter. Just wondered if anyone out there has a HDMI/30pin adapter to test it with.

Thanks,

Paul.

[walibe]

I would just get the proper adapters. I've wasted money on third party adapters that either don't work, only partially work or only work for a while then die. Its cost me more in the long run.

[Goobley]

It won't work, the Lightning to HDMI adapters are extremely complex. I remember people analysing them when they first came out, the HDMI adapter has an ARM processor with volatile memory in it that has to receive a copy of its OS from the idevice each time it is used.
The 30 pin adapters were cheap because HDMI video streams were implemented on certain pins and just had to be broken out (plus a bit of decoupling and pull down resistors). Lightning instead tries to do a lot more using only 8 pins and therefore requires active serial chips all over the place and interpretation layers like this.

Line out is the same case, to have line out available through the 30-pin adapter they had to add a DAC to the adapter even though there was a perfectly good one in the device... (although the one in the adapter has marginally better specs)