If you’ve been following the main blog, you may have seen a photo of one of the latest prototypes during the early stages of testing.

We do not yet have final schematics for the Light by MooresCloud – in fact final schematics are unlikely to be ready until after the KS campaign has completed, as we want to make the final hardware as awesome as possible, and we continue to put many hours per week into refinement of the UX.

Here are the files for the hardware of our latest prototype (#4):

Docs_121201 – PDFs of Schematics and PCB layouts, and BOMs

Eagle_121201 – Eagle Schematics and PCB layouts – requires Eagle 6.3

Gerbers_121112 – As sent to our PCB fabrication house

iMX233-OLinuXino-Micro_Rev_B.sch.pdf – PDF of schematic for OLinuXino Micro

Our basic hardware design builds upon the OLinuXino Micro, another open hardware design.  With this latest prototype, we actually use the OLinuXino Micro as a daughter-board – which simplifies assembly.  We have incorporated the required schematics into our own design, but we are still improving them and working on completing the PCB layout.  All the design files for the OLinuXino Micro can be found here, and will give you a good sense of what our final design will look like if you imagine that incorporated into the “Mid” PCB (without most of the connectors).

Here is another photo of one of the latest prototypes.  It has pluggable connectors to allow disassembly and further modifications.  You can see the red OLinuXino Micro PCB, and some of our latest mods (coloured wires).  Batteries are a bit of a squeeze to fit here, and require some extra mods on the OLinuXino.  The console cable for debugging is plugged into the central rear PCB.

This photo shows how the connectors are installed in a unit ready to go into a case.  Once all the PCBs are soldered together, it is a bit more difficult to work on them.

A few extra notes on the Prototype 4 files:

  • They are not the final design!
  • Some features included here are for testing/evaluation only, and may not be in the final product (e.g. MPR121 capacitive touch sensor and MCP73831 Li-Ion battery charger).
  • Soldering the MPR121, or even the MMA7660, IS NOT for the unexperienced!   See the picture below.
  • If assembling this as-is, you will probably need to make the same modifications to the OLinuXino Micro as we document in the Make Your Own blog article.  In particular the modifications removing R17 and adjusting I2C jumpers, but probably also the unused connectors.  This time the header pins should exit from the bottom of the board.
  • We have already begin a number of changes to these designs on our prototypes, but these changes are not yet complete in CAD form.  The changes are primarily related to soft power control and improvements to the battery charging circuitry.  These improvements do not stop the published design from working.


  • The hardware designs are released under the Creative Commons Attribution-Share Alike 3.0 United States License.
  • You may reproduce them for both your own personal use, and for commercial use.
  • You need to provide a link to the original creators of the designs on any documentation or website where these are republished.
  • You may also modify the files, but you must then release them as well under the same terms.
  • Credit can be attributed through a link to the creator websites: (LED control, CPU integration, and power management circuitry) and (for the OLinuXino Micro schematics)
A photo of the Right side PCB showing some of the modifications made for soft power control.
This photo shows the tiny Freescale MMA7660 and MPR121 sensor chips – soldered by hand!  These chips are 3mmx3mm in size, and the solder joints on the MPR121 are 0.2mm wide, and 0.2mm apart – on all 4 sides.  The joints on the MMA7660 are not much bigger.  For scale, the nearby capacitors are 0603 size.


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