I have a remote control system that is used to remotely turn a motor on / off. The motor is switched on when a button is push on a wireless remote. When the control module receives the wireless signal it takes an internal relay to ground which controls a 30Amp Bosch style auto relay that is used to power the motor (it is a momentary internal relay).
I am trying to figure out a way to keep the existing system operating while at the same time use an Arduino to ground the 'Remote Triggered Gnd, thus being able to control the motor from the existing remote as well as an Arduino.
I'm ok with the actual Arduino sketch, I just not sure of the hardware side.
Please read the advice how to attach information. Including files of any kind is not the prefered way. Pictures can be made showing up without downloading.
I repeat my previous question once more: The current needed for the Bosch relay coil is also interesting.
Railroader:
Please read the advice how to attach information. Including files of any kind is not the prefered way. Pictures can be made showing up without downloading.
But not pictures embedded in a garbage PDF!
PDFs are simply not compatible with HTML. Their only purpose is to render a document in a layout to be printed on paper, not on a video screen. A PDF viewer operates in a totally different manner to a Web browser.
Good. Then You need to know for sure how the existing controller works. Does it connect GND to the low side of the coil to activate the relay and when being not active no voltgage is output.
Then a logic MOSFET handling more than 10 Amps can be jacked into the low side of the relay coil.
That will mean that if any one of the 2 systems tries to activate the relay it will be activated.
cdb0ewm:
Hey I'm new to this. What format is acceptable
An image format. PNG is current recommendation as it is an "open" format, but cameras generally generate JPGs. GIFs are also usable - I believe the patent has expired and you can do GIF animation.
The thing is, in order to put a photographic image into a PDF, you must first have in it an image format and then encapsulate it in the PDF. Which simply makes it much harder to deal with.
cdb0ewm:
II am trying to figure out a way to keep the existing system operating while at the same time use an Arduino to ground the 'Remote Triggered Gnd, thus being able to control the motor from the existing remote as well as an Arduino.
Smart move is to make or get another remote. Hacking the car can get you into deep legal doodoo.
Possibly. Don't use D0 as Arduino output. That is connected to the USB and used for downloading the code. Use D2 instead.
I don't know the exact pins on the transistor......
I appreciate OP’s tenacity in approaching this, but there are several issues that could be addressed for future enjoyment of Arduinos and electronics in general.
-Try to listen to advice on things about working in the forum...
-You’ve found a drawing style ‘even worse’ than a Fritzy diagram...
-Logical thinking is often presented in logical drawings.
Take what you want from that.
We can be perceived as rude and unhelpful, but teachers have better results with students that help themselves.
If we’d followed simple instructions, this could have been resolved in one or two replies. Not a problem if it’s a one-time effort, but give it a shot.
As a closer - search for Arduino relay schematic, understand it, and the rest will be easy.
Yet again, the OP didn't read the replies and multiple links on how to post an image IN-LINE
It's really hard to give help to a block of wood.
(Apologies if I'm wrong)
