PWM(S-BUS)+LANC+DC12V BMMCC Angle Breakout Expansion Box Module by RADIOPROEKTOR

**LJR** · 02-12-2017, 06:04 PM

Thanks Shijan, I'm a fan of what you're doing.

**tmronin** · 02-12-2017, 07:56 PM

Originally Posted by LJR

Thanks Shijan, I'm a fan of what you're doing.

same here. put me down for one of your expansion boxes when you get to the selling part of this process.

**shijan** · 02-13-2017, 03:25 AM

Currently i search a better way to manufacture a body of the box. At this Sunday my friends made test samples on usual FDM 3D printer and i don't like the results. It appears not too precise and material not strong enough for this kind of small things, also it takes too many time for batch manufacture. So i refuse my idea of simple 3D printed body.
Now i got few other more precise and professional manufacture options, like DLP/SLA 3D printers or CNC machined body sample for future molding. Need to test that things too.

**Nux** · 02-13-2017, 04:18 AM

Originally Posted by shijan

Currently i search a better way to manufacture a body of the box. At this Sunday my friends made test samples on usual FDM 3D printer and i don't like the results. It appears not too precise and material not strong enough for this kind of small things, also it takes too many time for batch manufacture. So i refuse my idea of simple 3D printed body.
Now i got few other more precise and professional manufacture options, like DLP/SLA 3D printers or CNC machined body sample for future molding. Need to test that things too.

Keep up the good work Shijan.

**shijan** · 02-13-2017, 12:15 PM

vga.jpg 333 vga-no-corver.jpg 333 vga-wires-new.jpg

**Howie Roll** · 02-13-2017, 01:47 PM

An idea might be to just source the parts and post links for a cool DIY project with the STL file for printing. An engine block is not a precise casting it's later machined to spec. You could do the same with 3D printing, print the rough block that can later be finished with tools. A simpler , albeit less sexy, beefier design with less reliefs and cutouts.

Good Luck

**Stelvis** · 02-14-2017, 12:29 AM

Originally Posted by Howie Roll

An idea might be to just source the parts and post links for a cool DIY project with the STL file for printing. An engine block is not a precise casting it's later machined to spec. You could do the same with 3D printing, print the rough block that can later be finished with tools. A simpler , albeit less sexy, beefier design with less reliefs and cutouts.

Good Luck

thats what I was pretty much planning to do

**shijan** · 02-15-2017, 04:46 PM

Was testing today different wires thickness and the way to solder them and confirmed that Dupont Jumpers warped with heat shrink tube will fit to VGA pins.
Also done a little chart with Lumberg/EST vs OEM China connectors comparison. DC power connectors are also different. I can't find a Lumberg DC power connectors in local stores yet, but already find another brand which is better quality than OEM.

**shijan** · 02-15-2017, 05:45 PM

Originally Posted by Kim

the tip should be + 5V to avoid problems when connecting or pulling the connector out. the first contact ground and middle the SBUS. But I do not much care about the plugs.

Someone would anyway contact and burn headphone or mic on it.

Sounds logical, but i just checked LANC pinout for compare and tip is used for signal, and middle contact used for DC power.

**Denny Smith** · 02-15-2017, 08:14 PM

The Power for LANC is very low, so having the tip (signal) pass by the power connection on its way in, and does not create a short, or issue with the LANC controller. SBus would be another issue, as it is 5VDC, so I would make that a power to tip, SBus signal ring, and ground Steve.
Cheers