Earth in the Woods

My first bigger Project in Blender. The earth was made with this tutorial and the textures came from NASA. I used photogrammetry to 3D scan the tipped over tree, the software for it is called Meshroom. The background is a picture from the same location were I’ve scanned the tree. And the mushrooms and foliage on the floor are modelled by myself.

Problems and Fixes of the first design.

After the PCB’s arrived, I tested them and found the following problems:

  • IR Receiver caused a short circuit
  • Transistor didn’t switched the LED’s
  • IR LED’s were too dim

And these are fixes:

  • IR Receiver had the wrong footprint (GND and VCC were switched)
  • Transistor only worked with 5V, replaced it with a MOSFET with 1.7V threshold
  • IR LED’s current is raised from 20mA to 80mA
  • Relocated the power input connector
  • added a solder pad for the spiral antennas
  • Enlarged the traces for the LED’s

Ordering the new revision soon, so hopefully the first fully working design will be published soon. I will make a proper release on Github with the all the working files, including gerber files.

First design of the OpenMQTTGatewayPCB

The goal of this project is to make a PCB for the OpenMQTTGateway firmware, which holds almost every module there is available for it. Currently these modules are on the design:

  • IR (Send and receive)
  • RF (Send and receive)
  • PIR
  • DHT
  • Bluetooth (Module is mounted on the backside of the PCB)

Right now the diameter of the PCB is 91mm, so the case will be 100mm or a bit bigger. But if it is possible I will try and shrink the size of the PCB as much as possible.

First PCB design
First iteration of the schematic