[Combined Kit] Angle Expansion Box (plastic body) + Angle HDMI Clamp kit v.1
List price: $94.00
29% Sale
New other
20 days
Ukrainian Post: $7.00

This is lower priced kit limited offer:

Expansion box body made of plastic. Experimental samples, liquid urethane casts body. They look perfect outside but slightly not too perfect inside. Very lightweight.

HDMI clamp version 1. Same as current version but it was machined on the local factory with slightly different coating and less perfect finish.

PWM(S.Bus)+LANC+12V DC Angle Breakout Expansion Box Module developed by RADIOPROEKTOR for Blackmagic Micro Cinema Camera (BMMCC) and Blackmagic Micro Studio Camera 4K (BMMSC).

Angle shape provides compact and secure cable management without mess of wires around the camera. Box compatible with SmallRig cage and can be used without any cage as well.

Box uses high quality TRS connectors made by Lumberg/EST (Germany/Japan). Everything is connected with tiny Dupont Jumpers, so you can open the box and easily change cables configuration for your needs just in few minutes. This makes it compatible with any PWM and S.Bus camera controllers, allow for Composite video signal output, Genlock/Reference input or any other desired option.

Please specify before purchase if you need S.Bus or PWM or any other pinout for 3.5mm jack socket. Also let me know if you use Micro Cinema or Micro Studio Camera because they have slightly different pinout. Everything is connected with tiny Dupont Jumpers so you can change pinout any time later but it just be easier to use Expansion Box without any intervention.

Little FAQ:

  • PWM is very simple DIY friendly interface but slightly limited. It is great if you need only few external buttons. With 3.5mm stereo jack you can use two PWM channels. For example with simple On/Off switchers you can control Record/Stop and ISO. Anyway if you need S.Bus in future you can open the box, take tweezers and carefully change positions of BLUE and GREEN cables.
  • S.Bus is more complicated interface. It can control all camera options with one single cable, but needs external power and Arduino based controller.
  • LANC is another type of common interface. It is always mapped to separate bottom 2.5mm jack socket and can be used simultaneously with PWM/S.Bus.


  • This Expansion designed to fit to SmallRig BMMCC 1773 cage and to dimensions of my other accessories. It also fits to WoodenCamera cage but very tight. In some situations it may not fit.
  • This Expansion Box designed as flexible and free adjustable DIY device. It is not made for any specific single controller in mind. Everything is connected with tiny Dupont Jumpers, so you can open the box and easily change cables configuration.
  • All pinout specs and connection charts information is available here.
  • This Expansion Box provides separate S.Bus (or PWM or Genlock or Analogue video out), LANC and DC power connection.
  • This Expansion Box uses 3 pole TRS jack sockets.
  • !!! Please note that CGpro Remote and One Little Remote Light Controllers use 4 pole 3.5mm TRRS jack connection that combines S.Bus+LANC interface in one cable. They will not work "as is" with this Expansion Box. However to use those controllers with this Expansion Box you need custom made DIY cable. 4 pole TRRS jack to 3 pole TRS jack. See this post for details http://www.bmcuser.com/showthread.php?20371-PWM(S-... !!!
  • I don't have planes to implement 4 pole 3.5mm TRRS jack socket connection into my Expansion Box because i think that it is just bad idea to mix two different interfaces (S.Bus and LANC) in one cable. It is also impossible preserve free adjustable concept if use 4 pole TRRS sockets.

Tech Specs:

  • 1 x 3.5mm TRS jack socket for PWM, S.Bus or any other user selectable inputs/outputs.
  • 1 x 2.5mm TRS jack socket for LANC input.
  • 1 x 5.5x2.1mm (5.5x2.5mm compatible) 12V DC power input socket.
  • 1 x DB-HD15 serial connector.
  • Dimensions: 34x34x29mm
  • Weight: 40g

Package includes

  • - Angle Breakout Expansion Box
  • - 2pcs #4-40UNC screws (Stainless Steel or Black Oxide Steel for your choice)
  • - 3/32 allen wrench hex key

Installation tutorial:

  1. Insert Expansion Box into the camera.
  2. Tight UPPER screw.
  3. Slightly tight LOWER screw. (If you tight lower screw first, this can cause Expansion Box inserted unevenly because camera side has slightly curved shape)

Wires inside the box for BMMCC are marked with colors:

  • S.Bus power (tip) [BLUE]
  • S.Bus signal (ring) [GREEN]
  • S.Bus ground (sleeve) [WHITE]
  • LANC signal (tip) [YELLOW]
  • LANC power (ring) [ORANGE]
  • LANC ground (sleeve) [GREY]
  • Power +12V DC (center pin) [RED]
  • Power ground [BLACK]

Wires inside the box for BMMSC are marked with colors:

  • Genlock (tip) [BLUE]
  • S.Bus signal (ring) [GREEN]
  • Genlock/S.Bus ground (sleeve) [WHITE]
  • LANC signal (tip) [YELLOW]
  • LANC power (ring) [ORANGE]
  • LANC ground (sleeve) [GREY]
  • Power +12V DC (center pin) [RED]
  • Power ground [BLACK]

More info about earlier development of this Expansion Box Module: http://www.bmcuser.com/showthread.php?19574
Recommended angle HDMI cables: http://bmcuser.com/showthread.php?19313-Angle-HDMI...
Recommended low profile angle 3.5mm trs jack cables: http://bmcuser.com/showthread.php?19574-PWM(S-BUS)...
BMMCC/BMMSC S.Bus, PWM, LANC controllers database: http://www.bmcuser.com/showthread.php?20363

Angle HDMI Clamp Lock Kit Module developed developed by RADIOPROEKTOR for Blackmagic Micro Cinema Camera SmallRig 1773 Cage with Ugreen angle HDMI adapter.

BMMCC HDMI port is rather shaky, especially when used with angle HDMI adapters, so i decide to develop a clamp to solve this problem. After few DIY prototypes i was able to produce small batch of factory machined angle HDMI clamps. More info about earlier development of this clamp http://www.bmcuser.com/showthread.php?18858

!!! Please note that this clamp designed to work with SmallRig Cage and Ugreen angle HDMI adapter only !!!

Assembled kit includes:

  • Front and rear parts of angle HDMI clamp (factory machined from aluminum alloy, anodized in black color).
  • 2pcs 1/4"-20 3/8" length button head black oxide screws.
  • 2pcs M4 Stainless Steel grub screws.
  • 2mm allen wrench hex key.
  • Ugreen Angle HDMI adapter

Weight: 35g

Installation tutorial:

  1. Plug Ugreen HDMI adapter to the camera.
  2. Adjust and fix front element of the clamp.
  3. Adjust and fix rear element of the clamp.
  4. Slightly tight two small screws on rear element.


I've bought all those items separately few months ago and I'm buying it again for a B cam.
Everything is working very well, design match perfectly with my SmallRig cage and the build quality is outstanding, I can't recommend enough!
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