USB Host Shield for Micro
hoping can point me in right direction. i'm new whole hardware thing, , wouldn't have chance developing @ point, i'm hoping exists.
i started arduino experimentation because of need not find solution for. reading value off of usb scale on keypress , transmitting keystrokes computer. pretty simple once did research went , got leonardo , usb host shield, added in button tossed thing enclosure, few lines of code , presto. worked great. know rating doesn't allow 5v usb connection, of testing far haven't had add external power push 7v.
now mission simplify it. ultimate goal single small board solution small nubmer of components have several hundred of these made. start down path got micro, seamed obvious move leonardo. picked gravitech usb shield nano. made sense pinout matches micro micro having few pins nano wouldn't pass shield (i don't know if hold true or not haven't made far enough able test).
then hit first problem. gravitech board didn't use 5v, added 9v battery pack 7-12v input. powered shield, didn't pass enough power scale keep on. turn on, zero, enter sleep mode. think continue forward powering scale batteries, but i'll using more batteries don't want. considering leonardo full sized usb shield can powered , communicate without problem, including powering scale, can't imagine there technical reason why shield on micro couldn't same.
i came across usb host shield arduino pro mini, , info on how made work with 5v connection, not stack , go solution hoping for.
ideally can point me solution @ least down micro format. pointers me move forward appreciated.
i started arduino experimentation because of need not find solution for. reading value off of usb scale on keypress , transmitting keystrokes computer. pretty simple once did research went , got leonardo , usb host shield, added in button tossed thing enclosure, few lines of code , presto. worked great. know rating doesn't allow 5v usb connection, of testing far haven't had add external power push 7v.
now mission simplify it. ultimate goal single small board solution small nubmer of components have several hundred of these made. start down path got micro, seamed obvious move leonardo. picked gravitech usb shield nano. made sense pinout matches micro micro having few pins nano wouldn't pass shield (i don't know if hold true or not haven't made far enough able test).
then hit first problem. gravitech board didn't use 5v, added 9v battery pack 7-12v input. powered shield, didn't pass enough power scale keep on. turn on, zero, enter sleep mode. think continue forward powering scale batteries, but i'll using more batteries don't want. considering leonardo full sized usb shield can powered , communicate without problem, including powering scale, can't imagine there technical reason why shield on micro couldn't same.
i came across usb host shield arduino pro mini, , info on how made work with 5v connection, not stack , go solution hoping for.
ideally can point me solution @ least down micro format. pointers me move forward appreciated.
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