Thread: BMMCC 14.8V Battery Module by RADIOPROEKTOR

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  1. #81  
    Senior Member shijan's Avatar
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    Quote Originally Posted by GeranSimpson View Post
    Well that's about as compact as you can get with a cinema camera! What hand grip is that?
    SmallRig Right Side Wooden Grip with Arri Rosette 1941 + SmallRig Single 15mm Rail Clamp 1549 + simple DIY PWM Rec/Stop controller (simple button connected to 3.5mm TRS socket and placed to aluminum 15mm tube) I described it in details here http://www.bmcuser.com/showthread.ph...l=1#post258627

    Currently one great idea came into my head! Because Battery Enclosure have multiple parallel sockets, you can connect two or more Battery Enclosures with provided DC cable and multiply capacity! 2x batteries give you 100 watt-hour total, 3x batteries 150 watt-hour and so on... voltage remains unchanged. This may be useful for power hungry Pocket 4K camera users. This setup also allow to hot swap batteries.
    Multiple batteries may be attached to single cheese plate or rods, so you can use them as one single brick.





    And few worlds about current state of LP-E6 type connection plates:
    BMMCC/BMMSC LP-E6 socket is slightly unusual and varies of "classic" LP-E6 size and shape. Earlier the main idea was to make LP-E6 type connection plate for this battery enclosure compatible with any existing LP-E6 sockets. As a result i got less tight connection with BMMCC/BMMSC cameras so battery feels slightly wobble. Also Axson F38 polyurethane shrink a lot more than i expected (average 0.2mm at every dimension) which additionally affect connection tightness. It is not too bad, but just not perfect.
    It appears that in real life there almost no any device except BMMCC camera that could be usable with this LP-E6 type connection plate. So during next months i am thinking to redesign drawings, order new aluminum CNC machined master model and release version 2 of LP-E6 type Connection Plate. It will fit to BMMCC more precise but will not be compatible with LP-E6 sockets on other devices.
    If current LP-E6 type connection plate is too wobble for your taste, you can always put few layers of sticky tape shims in front of it. Also if you wish, anytime later you can upgrade to new tighter LP-E6 type connection plate.


    Last edited by shijan; 06-05-2019 at 07:33 AM.
    All my custom made accessories for BMMCC/BMMSC now available here https://lavky.com/radioproektor/
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  2. #82  
    Senior Member shijan's Avatar
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    To power USB devices from this Battery Enclosure you can use this DC Power to USB Adapter Converter.
    It have 5.5x2.1mm socket input (5.5x2.5mm compatible) and USB Type-C output.
    It supports input voltage up to 22V and can power any USB device up to 45W. It also supports different Quick Charge modes for smartphones.

    Support Type-C PD and QC2.0/QC3.0/DCP/PE+1.1/PE2.0/FCP/AFC/SFCP/SCP/USB PD
    Input: DC 5.5*2.1mm 10.5v-32v
    Output: 45W Max. (5V/2A, 9V/3A, 12V/2A, 15V/2A, 20V/2.25A)
    Currently i pre-order few those DC to USB-C boxes so in few weeks they will be available in my store as well. Seems like useful add-on for Battery Enclosure.

    Here are some links to the product:

    https://www.aliexpress.com/item/45W-...024740754.html
    https://www.aliexpress.com/item/Dc-P...946474518.html
    https://www.aliexpress.com/item/Dc-P...984274931.html
    https://www.aliexpress.com/item/Inte...917764127.html
    https://www.aliexpress.com/item/DC-U...029581092.html
    https://www.aliexpress.com/item/Inte...917561477.html
    https://www.aliexpress.com/item/cltg...036994129.html
    https://www.tvc-mall.com/details/dc-...01202593a.html
    https://www.amazon.com/Cablecc-5-52-...929416-4112164



    And here is another cheap and simple DC to dual full sized USB box. It is based on common DC to USB board. Input voltage 6V-30V. Max load - 24W per USB port.
    https://www.aliexpress.com/item/Dual...968961782.html

    Last edited by shijan; 06-20-2019 at 12:43 PM.
    All my custom made accessories for BMMCC/BMMSC now available here https://lavky.com/radioproektor/
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