By Kaffimusic
Tue Aug 09, 2022 10:15 pm
I have seen some efforts in that already, usually with a powerbank for phones or other USB-powered devices. The major drawback of that is the voltage is way too low. The MPC works nevertheless, but in the long run it is likely to become damaged by this. Low voltage needs high currents to maintain power, which is measured in Watts. The MPC is supposed to be used with 19V, wich lowers the needed amount of current (Amps) drastically, compared to a powerbank. However what I show here, if you´d like to copy that, is at your own risk.
I made my MPC One independent from a PSU. Used a DC-DC converter for motorbikes/mopeds from chinese production. I guess it´s a switching converter that brings 12V up to 19V for the MPC, like the original PSU does. The device can deliver 8Amps max, more than sufficent. I made the wiring so that I could hook up a second instrument (with same specs for consumption) and also a second battery in parallel to double the amount of Ah. Currently there is a 5000mAh12V LiIon for RC modelflying hooked up. With that it can run for hours. Did not calculate nor try it to the end, but I already used it something around 1,5 hours and the battery was still pretty good at it (You can see by the voltage, those types slowly go down). Does not look so smooth yet (maybe I will print a housing) but works well. I like to sit on my bed or a couch and use as little cable as possible while playing around.
BTW, the Mininova is powered by the MPC via USB.
I made my MPC One independent from a PSU. Used a DC-DC converter for motorbikes/mopeds from chinese production. I guess it´s a switching converter that brings 12V up to 19V for the MPC, like the original PSU does. The device can deliver 8Amps max, more than sufficent. I made the wiring so that I could hook up a second instrument (with same specs for consumption) and also a second battery in parallel to double the amount of Ah. Currently there is a 5000mAh12V LiIon for RC modelflying hooked up. With that it can run for hours. Did not calculate nor try it to the end, but I already used it something around 1,5 hours and the battery was still pretty good at it (You can see by the voltage, those types slowly go down). Does not look so smooth yet (maybe I will print a housing) but works well. I like to sit on my bed or a couch and use as little cable as possible while playing around.
BTW, the Mininova is powered by the MPC via USB.