Care to field these simple questions?
I have a gadget that uses 2 AAA batteries. I want to run it on AC. I have loads of 12v power supplies from external hard drives, old routers, etc.
1) How would you recommend I get 3V out of those 12v power supplies?
2) Or that would cost as much / more than just buying a 3v power supply? From Amazon or is there somewhere else you like? Like this one?
3) And I need a floor pedal / (on-off). again, you guys like amazon? Or is there a place that's cost effective for electronic components / devices?
4) maybe appropriate to ask here? A different project has an electric motor (think sewing machine motor) with a thin shaft. I need to attach a longer rod to it (to effectively extend the length of the motor shaft). Anyone know where you'd get a coupling or similar to connect the motor shaft to the extension. haven't measured both yet, but likely something like 1/8" diameter for each. The extension is only a couple inches.
I am envisioning a sleeve with a hex set screw at each end? I have no idea where to get something like that.
THANKS!!
I have a gadget that uses 2 AAA batteries. I want to run it on AC. I have loads of 12v power supplies from external hard drives, old routers, etc.
1) How would you recommend I get 3V out of those 12v power supplies?
2) Or that would cost as much / more than just buying a 3v power supply? From Amazon or is there somewhere else you like? Like this one?
3) And I need a floor pedal / (on-off). again, you guys like amazon? Or is there a place that's cost effective for electronic components / devices?
4) maybe appropriate to ask here? A different project has an electric motor (think sewing machine motor) with a thin shaft. I need to attach a longer rod to it (to effectively extend the length of the motor shaft). Anyone know where you'd get a coupling or similar to connect the motor shaft to the extension. haven't measured both yet, but likely something like 1/8" diameter for each. The extension is only a couple inches.
I am envisioning a sleeve with a hex set screw at each end? I have no idea where to get something like that.
THANKS!!