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Wiring smoke system to stick grip
- Thread starter ERJDriver
- Start date
https://www.youtube.com/watch?v=J-OSvVObF_c
https://ncd.io/blog/relay-logic/
I am interested in trying this out too.
https://ncd.io/blog/relay-logic/
I am interested in trying this out too.
Desert Rat
Well Known Member
It's pretty easy to wire just about anything to a stick push button. They won't handle the amp draw of something like a motor or whatever, hence the need for a relay, which is just a bigger switch activated by the little switch in the stick.
Stick buttons typically close the circuit on the ground side, so a typical way to set up what you're wanting to do would be to wire an arming switch on the wire that supplies power to the relay to act as a sort of safety against any accidental button pushes, then wire the stick button to ground in the wire coming off of relay terminal 30 in the schematic shown in the first response.
Stick buttons typically close the circuit on the ground side, so a typical way to set up what you're wanting to do would be to wire an arming switch on the wire that supplies power to the relay to act as a sort of safety against any accidental button pushes, then wire the stick button to ground in the wire coming off of relay terminal 30 in the schematic shown in the first response.
I had the same dilemma.
The momentary switch in my stick took me down the rabbit hole!
In the end I’ve got a custom pcb on its way from China to do the job. If it works I can send you a spare one. It will do the same thing thing as the arduino / prototype shield / voltage converter / relays as below, but on a single board.
https://tasrv14.blogspot.com/2023/10/smoke-system-electronics.html?m=1
The momentary switch in my stick took me down the rabbit hole!
In the end I’ve got a custom pcb on its way from China to do the job. If it works I can send you a spare one. It will do the same thing thing as the arduino / prototype shield / voltage converter / relays as below, but on a single board.
https://tasrv14.blogspot.com/2023/10/smoke-system-electronics.html?m=1
vlittle
Well Known Member
Here's one method. Panel switch for OFF-ARM-ON, and a stick switch for ON-OFF. Stick switch is armed when panel switch is in the ARM position.
http://www.vx-aviation.com/sprocket/photos/panel_elec/schematics-2/SMOKE.pdf
walkman
Well Known Member
I have a "smoke system" switch on the RHS lower switch panel that enables the system, and a separate breaker for the pump which runs constantly. I have a SPST on the grip in the pinkie position. That energizes a relay which in turn opens a solenoid valve down low on the inside of the firewall where the smoke line runs through it. Very near the fuel line.
This setup gives me about as crips on/off as you're likely to get.
Button is a momentary button unfortunately
Majorpayne317641
Well Known Member
You can use a relay that switches to one side or the other with a momentary button push. It will stay on the other contact until you press a momentary switch again. Used in automotive applications. This will allow smoke to turn on with a momentary button push, stay on, and then turn off with the same momentary button push.
Latching Bi stable Relay
Latching Bi stable Relay
Smoke switch
Thomas,
The MOM button in the stick will only stay on as long as you hold the button unless you use a relay. Another option is to install a throttle grip handle from 3D Stick & Rudder that can have a latching switch built in to keep the smoke system on:
https://www.3dstickandrudder.com/shop/5ip2emd2qwalxkpda50p99waoetpbf
Thomas,
The MOM button in the stick will only stay on as long as you hold the button unless you use a relay. Another option is to install a throttle grip handle from 3D Stick & Rudder that can have a latching switch built in to keep the smoke system on:
https://www.3dstickandrudder.com/shop/5ip2emd2qwalxkpda50p99waoetpbf
Can you link one that you have used in this application?
The ones I found all needed a momentary switch to ground to open, and a seperate momentary switch to ground to close. I couldn’t find a latching relay which could be switched on and off using the same switch/ground - they physically have seperate “activate” and a “reset” contacts. You could use 2 buttons on your stick grip I suppose…
Mikeyb
Well Known Member
You could use a maintained contact push button switch without a latching relay. Sometimes called ON-ON or latching switch. One push turns it on another push turns it off. If you need more current switching capacity you could add a spst relay in series with the switch.
They are used on the fuel pump position on Infinity grips.
An example:
https://www.mouser.com/ProductDetail/Apem/8636A?qs=W6/gMOc0EhXRbK8FqFexrQ==
They are used on the fuel pump position on Infinity grips.
An example:
https://www.mouser.com/ProductDetail/Apem/8636A?qs=W6/gMOc0EhXRbK8FqFexrQ==
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Can you change the momentary to toggle on/off? Smoke on a momentary isn't optimum without a very bright, conspicuous status light. It's going to get left on our turned off when you want it on. Still need a relay regardless.
That’s an interesting circuit. Thanks. Capacitor values are a bit of a mystery to me still.
