I have a Champion generator that utilizes a remote start FOB operating on 434 MHz. Can someone recommend which Adafruit transmitter/transceiver I could use with a Raspberry Pi for a remote start over the Internet?
Thanks!
Andre'
Remote Start
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- mikeysklar
- Posts: 13936
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Re: Remote Start
@AndreSmith,
Note - remote starting a gasoline generator could be dangerous and We don't sell 434 MHz RF gear.
That being said usually the easiest way to is rip apart the FOB and use a GPIO on the Pi to trigger a non-latching relay which can complete the button press. These FOBs are often 12v thus the need for the relay.
Note - remote starting a gasoline generator could be dangerous and We don't sell 434 MHz RF gear.
That being said usually the easiest way to is rip apart the FOB and use a GPIO on the Pi to trigger a non-latching relay which can complete the button press. These FOBs are often 12v thus the need for the relay.
- AndreSmith
- Posts: 3
- Joined: Tue Jul 20, 2021 4:24 pm
Re: Remote Start
The FOB's actual frequency is 433.995 MHz. I was wondering if one of the Adafruit 433 MHz. units would operate in that upper region?
I had considered using a relay to trigger the FOB switches but the FOB uses internal button cell batteries (3v-CR2025) that I would like to not have rely on to start the generator (or need to use another power supply to supplement operation).
Andre'
I had considered using a relay to trigger the FOB switches but the FOB uses internal button cell batteries (3v-CR2025) that I would like to not have rely on to start the generator (or need to use another power supply to supplement operation).
Andre'
- mikeysklar
- Posts: 13936
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Re: Remote Start
We do sell some 433 MHz gear like the RFM96W / RFM69HCW which come in many form factors. You would still need to reverse engineer any protocol involved with your generator <--> fob. This hardware could help you with that, but we don't have specific guides for this.
It might make more sense to swap the coincell with a 3v3 wall power supply and use a relay. Whatever you are more comfortable with makes the most sense.
It might make more sense to swap the coincell with a 3v3 wall power supply and use a relay. Whatever you are more comfortable with makes the most sense.
- AndreSmith
- Posts: 3
- Joined: Tue Jul 20, 2021 4:24 pm
Re: Remote Start
Thank you Mikey - that was the info and recommendations I was looking for.
I am using Universal Radio Hacker to decode and reverse engineer the FOB transmissions.
I know this path seems like I'm taking "the long road" but in the end, this way will be much simpler and more elegant. If it ends up not working/being too complicated, I can always revert back to your 1st suggestion of using the FOB and relays.
Andre'
I am using Universal Radio Hacker to decode and reverse engineer the FOB transmissions.
I know this path seems like I'm taking "the long road" but in the end, this way will be much simpler and more elegant. If it ends up not working/being too complicated, I can always revert back to your 1st suggestion of using the FOB and relays.
Andre'
- mikeysklar
- Posts: 13936
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Remote Start
The obstacle is the way. I think you have a good plan. Let us know how it goes.
Please be positive and constructive with your questions and comments.