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• IMU Sens

  Laetitia BEL • 04/07/2018 at 17:01 • 3 comments

  Here is how it looks like the IMU sens placed on the PCB TOP.
  It has multiple redundant accelerometers and gyroscopes.

  It is placed on dumpers for vibrations absorptions.
  

  
  

• PCB TOP / Raspberry Pi Compute Module Socket

  Laetitia BEL • 04/01/2018 at 22:52 • 0 comments

  The PCB TOP has a socket to host the Raspberry Pi compute module

  It is connected to :
  - a micro USB for booting
  - a USB-A for peripheral (not soldered yet)
  - two Raspberry Pi Cameras (not soldered yet)
  
  The power of the compute is provided by two LDO 1v8 and 2v5. The 3v3 is directly provided by the PCB Bottom.
  

  
  

• PCB TOP Assembled (part 1)

  Laetitia BEL • 04/01/2018 at 22:04 • 0 comments

  I assembled the following parts of the PCB TOP:
  - the SAME70-M1/M2 circuits
  - the headers of the xBees
  - the connector for front sens
  - the RPi Cams connectors
  - the Raspberry Pi compute module socket and circuit
  - the radio Si4464
  

  
  

• The weight

  Laetitia BEL • 03/24/2018 at 09:45 • 0 comments

  The weight matters ᕙ(° ͜ಠ ͜ʖ ͜ಠ°)ᓄ

  The PCBs of the fliying part is around 110g

  I will see how it will become when I finish the assembly
  

  
  

• Just got the PCBs

  Laetitia BEL • 03/24/2018 at 09:31 • 0 comments

  I've received the PCBs, shall now start the assembly!

  
  

• Got the font sens PCB

  Laetitia BEL • 03/23/2018 at 20:38 • 0 comments

  Just got the PCBs of the front sens, the assembly will follow.
  

  The Raspberry Pi Cameras will be placed in the front, hopfully to do stereo vision with the compute module.

  There will be also sensors (gas, temperature, baro in there).

  
  

• Plof

  Laetitia BEL • 03/22/2018 at 17:07 • 0 comments

  Nothing for the moment, waiting for the pcbs to arrive (expected tomorrow).
  I got the bom.
  The iron and oven are warming.
  

  Next step the assembly, then the software integration.
  

• BANANA CONNECTORS

  Laetitia BEL • 03/21/2018 at 19:01 • 0 comments

  For this version I will use only the soldered wire with banana connector.
  Next time I will use directly PCB soldered bana connector for LiPo and Motors.

  
  

• DRONI SAME70Pi / 1.ELECTRONICS / IMU SENS

  Laetitia BEL • 03/21/2018 at 18:35 • 0 comments

  This small piece of beauty is the graal of the project.
  A full redundant 3xIMU + baros.

  
  

  Quite small, it uses dumpers to get fixed on the TOP PCB of the drone.
  We keep a little delta between the two holes of fixation 2mm Y axis, and 3mm X axis. The reason is to have a small stress to keep the equilibrium of the IMU SENS.

  
  

  I use the 2xBMI160:

  
  2xLSM9DS1:
  2xLSM6DS33:
  
  
  Finally two barometers and temperature sensors:
  
  

• DRONI SAME70Pi / 1.ELECTRONICS / REMOTE CONTROLLER (UPDATE)

  Laetitia BEL • 03/21/2018 at 16:34 • 0 comments

  The analog joysticks that will be used are the same replacement for Fr'sky ones

  
  The PCB of the remote controller has changed a little bit.
  The TOP PCB will hold the analog sticks, buttons and leds.
  I added the possibility to fix a LCD, I don't know yet which.
  
  
  
  The link between the TOP and BOTTOM PCB of the remote controller is done using a PFC connector with 30pins (finally).
  
  
  I added both tactile buttons and small rockers.
  
  
  There are a bench of LEDs to displays statuses.
  
  
  REMOTE CONTROLLER PCB BOTTOM:
  The bottom PCB will hold the micro controllers and all the circuitry relative to the power.
  
  
  The funny and interesting thing is that the same components used in the flying part are used in the remote controlled.
  The idea is to have the same configuration to ease the software development and also for me to have the same circuits.
  
  It might appear that the remote controller has more calculation power that it will require, but whynot.
  
  We use the same Si4464 communication module with SMA antena:
  
  We use two xBees, and the SAME70-R1/R2 are linked using an UART:
  
  We use the same DC converters, but not the same number, because the need is not the same:
  
  

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