For review. Finished I hope.
- Thread starter bull10x
- Start date
It looks like the schematic will work but, personally, IMHO etc etc:
- I think you've got 3 fuses too many. Put a 1.5 or 2 amp fuse on the incoming supply on the left, followed by a diode to the first relay, with a "safe 12v" point declared at the pointy end of the diode and the relay. Connect all the other 12v points to the "safe 12v" point
- What's the 1n4001 diode at the bottom left for?
- I'd ditch the relay at the bottom left and the 3xAA batteries in favour of what you had before (a regulator) with a few suitable components around it to make it "automotive". Google for the Megasquirt power supply and base yours on that - that will be good enough
- Experiment with your motor - I would look at connecting it to 12v with a "dropper resistor" that drops 9v across the resistor at the current that the motor takes (others may not agree!). Then I'd ditch the bottom right relay and the 12v->3v adapter and connect the ground of the motor to OUT5 on the 2003, Don't remove the 0.1uF from the motor though.
Just $0.02 worth of course - but it just strikes me as too complicated than it needs be..
- I think you've got 3 fuses too many. Put a 1.5 or 2 amp fuse on the incoming supply on the left, followed by a diode to the first relay, with a "safe 12v" point declared at the pointy end of the diode and the relay. Connect all the other 12v points to the "safe 12v" point
- What's the 1n4001 diode at the bottom left for?
- I'd ditch the relay at the bottom left and the 3xAA batteries in favour of what you had before (a regulator) with a few suitable components around it to make it "automotive". Google for the Megasquirt power supply and base yours on that - that will be good enough
- Experiment with your motor - I would look at connecting it to 12v with a "dropper resistor" that drops 9v across the resistor at the current that the motor takes (others may not agree!). Then I'd ditch the bottom right relay and the 12v->3v adapter and connect the ground of the motor to OUT5 on the 2003, Don't remove the 0.1uF from the motor though.
Just $0.02 worth of course - but it just strikes me as too complicated than it needs be..
I am hoping for them to last a season.How long will 3 x AAA last?
They will only be powering the Picaxe when the motorcycle is running.
Well... It is doing nothing. I think that I put it in there for the wrong reason -The reason for the one @ the right relay is to protect the Darlington. My despike diode- What's the 1n4001 diode at the bottom left for?
But I was just looking at my schematic at the right hand relay and if I do keep it, Shouldn't the Diode go on the feed side of the relay coil???
I think that I have 2 fuses too many alsoI think you've got 3 fuses too many. Put a 1.5 or 2 amp fuse on the incoming supply on the left,
So are you saying keep the 1N4001? and just hook all common +12vdc to it?followed by a diode to the first relay, with a "safe 12v" point declared at the pointy end of the diode and the relay. Connect all the other 12v points to the "safe 12v" point
I will go a Googling.Google for the Megasquirt power supply
Less is more. If I can use a "dropper resistor" and get rid of extra components that would be great!- Experiment with your motor - I would look at connecting it to 12v with a "dropper resistor" that drops 9v across the resistor at the current that the motor takes (others may not agree!). Then I'd ditch the bottom right relay and the 12v->3v adapter and connect the ground of the motor to OUT5 on the 2003, Don't remove the 0.1uF from the motor though.