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Hi guys, do you have any advice on which breakout board / motion controller to buy for my mini diy carving cnc milling machine?
What are pros/cons with simple parallel port boards, and which one should I buy?
I was looking "smooth stepper" clone like this in the picture, but do I really need one (they are too expensive, I could get arduino set for that money...). Anyway, any advice?
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A possibly retarded and basic electronics problem;
My picture is the hand-crafted ice cream cart that you guys helped me to build a while back.
That's my bro and I in the pic; our plan is to run it at festivals and food fairs, etc.
We will be using an Elcold, mobilux 21 mobile freezer for our product, for long periods of time (sometimes 48 hours straight while we're staying overnight at a distant weekend event). This mobile freezer has a built-in, rechargeable, 12v battery, which when fully-charged, provides approximately 8 hours of freezer-use.
You can re-charge this internal 12v battery by attaching the accompanying "battery charger" to the freezer, and It to a power supply. The freezer can simultaneously operate while its battery is recharging, which means it could run indefinitely if the "battery charger" was connected to a power supply. My problem, though, is that I wont always have access to power supply when I'm travelling to and from an event, or sleeping overnight during a festival, etc.
The battery charger's input is 100-240VAC 50/60Hz, which I think means it only requires around 300 Watts of running-power to be able to keep the freezer's internal battery charging while it's being used.
I've looked at Gas-generators, but they seem very excessive as I only need about 300 watts of power. Is there a smaller, less noisy/smelly way of sending power to my freezer's 12v battery?
Any suggestions, advice, or ideas would be greatly appreciated.