How to make Relay connection for back camera

Share12015-11-18 20:59:22

Posted by: Maxim L
Administrator
Registered: 2015-11-10
Invites: 0
Posts: 50
Respect: [+0/-0]
Positive: [+1/-0]
Total time:
9 hours 30 minutes
Last visit:
2017-11-19 21:24:54

For this connection we need:
1) USB extension good quality(with good insulator inside) 0,15m maximum(otherwise it will lose signal from usb Easycap)

2) RELAY: Axiom im06, hk3ff-dc12v-shg or analog.

3) 2 core cable(for example audio cable) with section 0,3 or 0,5mm

Roughly scheme of connection(sorry for this picture, but do not have time to make normal, will update it later):

What we need to do
Block 1 (usb hub and usb extension cable)
Please carefully slice your usb extension in the middle and get ONLY red cable => cut this RED cable for 2 parts and connect each part with audio cable (approx 3 or 5 meters, it depends on your car length)
Block 2 (Relay and back light)
Connect your Relay with back light cords and with USB extension from Block 1
THAT'S ALL FOLKS!
This scheme will imitate USB Easycap connection into the HUB and when you connect it, when backlight will "on" - our app, EASYCAP Viewer, will start streaming video in PnP mode.

0

Share22016-03-27 13:24:06

Posted by: overlok
Beginner
Registered: 2016-03-27
Invites: 0
Posts: 1
Respect: [+0/-0]
Positive: [+0/-0]
Total time:
26 minutes
Last visit:
2016-04-05 09:51:23

реле в этой схеме какую роль играет ?

0

Share32016-03-31 17:48:38

Posted by: Maxim L
Administrator
Registered: 2015-11-10
Invites: 0
Posts: 50
Respect: [+0/-0]
Positive: [+1/-0]
Total time:
9 hours 30 minutes
Last visit:
2017-11-19 21:24:54

overlok wrote:

реле в этой схеме какую роль играет ?

This scheme will imitate USB Easycap connection into the HUB and when you connect it, when backlight will "on" - our app, EASYCAP Viewer, will start streaming video in PnP mode. Relay is connecting 2 contacts in usb extension, which has been normally open.

0

Share42016-07-05 14:47:10

Posted by: vineethng
Beginner
Registered: 2016-07-04
Invites: 0
Posts: 2
Respect: [+0/-0]
Positive: [+0/-0]
Total time:
15 minutes
Last visit:
2016-07-10 10:31:19

As per my understanding USB extension cable has 4 wires. Outer wire, Red, Is for the power and the inner two for data. Please correct me if I am wrong.
1. For data transfer, ie. Data from Easycap device to otg, all the four wires has to be connected. Three will be connected always and the Red will be connected only when the car is in reverse gear.
2. Charging the tablet is done through the Data wires 2 and 3. Which will be always connected.

The numbering in the circuit diagram for the relay is not clear. Is there a better circuit diagram.

0

Share52016-07-10 10:28:22

Posted by: vineethng
Beginner
Registered: 2016-07-04
Invites: 0
Posts: 2
Respect: [+0/-0]
Positive: [+0/-0]
Total time:
15 minutes
Last visit:
2016-07-10 10:31:19

from where the power to charge the tablet comes. Should i use a OTG-Y cable.

0

Share62016-08-15 18:32:46

Posted by: Maxim L
Administrator
Registered: 2015-11-10
Invites: 0
Posts: 50
Respect: [+0/-0]
Positive: [+1/-0]
Total time:
9 hours 30 minutes
Last visit:
2017-11-19 21:24:54

vineethng wrote:

from where the power to charge the tablet comes. Should i use a OTG-Y cable.

Hello, yes, you can use your Y-OTG cable, but the scheme of connection will be another(pls see the picture)

Just need to use relay connection between 4 and 5 wires of your y-otg cable. In normal mode it will work like "charger", when you will use back cam: relay will connect 4 and 5 wires and your cable will be like OTG with connected usb Easycap

0

Share72016-08-15 18:59:07

Posted by: Maxim L
Administrator
Registered: 2015-11-10
Invites: 0
Posts: 50
Respect: [+0/-0]
Positive: [+1/-0]
Total time:
9 hours 30 minutes
Last visit:
2017-11-19 21:24:54

vineethng wrote:

As per my understanding USB extension cable has 4 wires. Outer wire, Red, Is for the power and the inner two for data. Please correct me if I am wrong.
1. For data transfer, ie. Data from Easycap device to otg, all the four wires has to be connected. Three will be connected always and the Red will be connected only when the car is in reverse gear.
2. Charging the tablet is done through the Data wires 2 and 3. Which will be always connected.

The numbering in the circuit diagram for the relay is not clear. Is there a better circuit diagram.

On first scheme we are talking about inserted usb easycap to the hub. And main idea is to cut the power "RED" wire(in usb extension) and use in cut ends relay connection.
Scheme is below:

When you will use back cam --> relay will connect power wire into the hub and usb Easycap will be available in the Android system with streamed video from back cam.

0

Share82016-08-30 14:31:56

Posted by: Juandachu
Beginner
Registered: 2016-08-30
Invites: 0
Posts: 1
Respect: [+0/-0]
Positive: [+0/-0]
Total time:
4 minutes
Last visit:
2016-08-30 14:31:57

Would it be possible to add a setting on the app to keep it from autolaunching when the easycap device is powered on? I don't really care for the autolaunching or signal detection and it would be a pain to have to put in a relay between the capture device and my tablet. The thing pops up whenever I turn on my car.

0

Share92016-09-13 17:01:37

Posted by: Maxim L
Administrator
Registered: 2015-11-10
Invites: 0
Posts: 50
Respect: [+0/-0]
Positive: [+1/-0]
Total time:
9 hours 30 minutes
Last visit:
2017-11-19 21:24:54

Juandachu wrote:

e possible to add a setting on the app to keep it from autolaunching when the easycap

We will add it in nearest update, it will be w\o any popups reminders, but only last modified presets available

0

Autodroid Software Development Forum

Forum navigation

User links

User info