Controlling the Replay xd1080

mrldcty · Post by **mrldcty** » Thu May 31, 2018 2:37 am

The Replay xd1080 video camera has a feature that will turn it on and start recording whenever external power is applied. I'd like to control it using my RCP MKII, but the camera requires 5V and (I think) 500mA or above. I think this rules out the analog outputs which provide only 50mA (right?).

Has anyone used this camera controlled by the RCP yet? I think what I'm going to have to do is use one of these: https://www.amazon.com/Converter-Module ... pldnSite=1.

Then switch it using the RCP... but I haven't yet found the right type of "digitally controlled switch".

Would appreciate any pointers! I imagine there is a switch out there that can be driven by the GPIO channels... I just don't know what they are called! LOL

EDIT: Hey... they are called Solid State Relays!

https://www.electronics-tutorials.ws/po ... relay.html

So, unless someone has a simpler idea... looks like I'm after a relay and a bucking converter...

EDIT 2: I love having a conversation with myself! LOL... OK, I just re-read the RPC hardware spec... I think the GPIO channels are the relay. I just need to connect the neg side of the converter input to a GPIO channel and the positive side to a 12V hot wire.

mrldcty · Post by **mrldcty** » Sat Jun 02, 2018 11:20 pm

Tried a simple test today. Hooked up a VOM to a Gpio channel configured as output. When I set that channel to "1", I indeed get the expected 12V... but when I set it to "0", I still get about 7V... according to the docs, it should be an open circuit... why do I still see voltage?

Post by **brentp** » Tue Jun 12, 2018 3:13 pm

Hi,

There's a weak pullup on the outputs. But you should be able to use the GPIO to control the ground on a small relay that's driven off of the 5v output - try that to see if it works.

mrldcty · Post by **mrldcty** » Tue Jun 12, 2018 7:51 pm

UPDATE: I have a simple setup where two replay xd1080 cameras are powered by the 5v reference output with the grounds going through two of the GPIO channels. I have tested that on the car in my shop and it seems to work like a charm. Have not tried it on the track yet, but I don't see why it would have any issues if it works in the shop.

Thanks for the help on this Brent!