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• Lidar header

  Samuk • 04/08/2024 at 17:53 • 0 comments

  I added a header for the Lidar sensor I'm not sure if the new £45 one will work with ROS2 yet, but the pinout seems to be the same as the older £69 ones so I stuck one on for covenience
  

• New breakout boards

  Samuk • 04/04/2024 at 23:15 • 0 comments

  I finished* routing the 'main' breakout board

  I also did one with a Wemos(ish) footprint

  Both of these are designed to connect to the Mikrobus header on https://rosmo-robot.github.io/

  * It's not actually finished, I just haven't spotted the errors yet
  

• Xiao-S3 camera mount & less ground islands

  Samuk • 04/01/2024 at 21:53 • 0 comments

  
  
  
  I spotted a ground island in the PCB so did yet another iteration
  

  • Ground islands (hopefully!) removed
  • Added a bunch of capacitors to smooth out the power
  • Added a 5v header (bottom of the PCB) So you could plug in one of these USB-C connectors the idea is you could then add a USB powered Wifi/ AI camera
  • Added extra female header so you could now use the Open hardware ESP32-S3 or the closed hardware ones that are a bit cheaper
  • Bottom silkscreen tidied up a bit
  • More: rosmo-robot.github.io/

• Onboard motor drivers

  Samuk • 03/14/2024 at 22:16 • 0 comments

  
  Did a bit of work on a version with on-board L9110S motor drivers, you can find that here it's currently untested, but I'll try it soon
  
  

• Version 1.0 approaches? Stuff to do, looking for collaborators

  Samuk • 03/06/2024 at 09:57 • 0 comments

  I've just ordered a PCB that I'm hopeful will be a 'Version 1' https://rosmo-robot.github.io that I'll offer for sale on Lectronz.

  This will support Microblocks Teleop from an Android app and also ROS2 Teleop from a browser.
  

  There's a bunch of further software stuff that I'd like to get done 'at some point' I thought it would be good to write down some of these ideas to help potential collaborators jump into a bit of the project that's interesting to them.

  ROS2 tasks
  

  • Create a URDF file for simulation
  • Confirm the Lidar to be working
  • Confirm IMU working
  • Confirm Mecanum drive working
  • Configure Foxlglove studio
  • Create up to date Virtualbox image of ROS2 install
  • Use BeagleboardY-AY for on-board compute/ vision processing
  • Create Docker image of ROS2 install

  
  Microblocks tasks
  

  • Confirm Ultrasonic working
  • Confirm vl53l0x working
  • Write autonomy sketch based on distance sensors
  • Confirm OLED 'eyes' working
  • Write 'eyes' sketch to give some personality
  • Configure Android app to support voice control
  • Configure Android app to have 'eyes' so phone can be robot-mounted

  Hardware tasks

  • Iterate on 'Rosmo' the 'daughterboard' & 'Medium' PCB

  Organisation/documentation tasks

  • Add photos to 'build' page & tweak wording
  • Add PCB to Lectronz store
  • Social media stuff, make some videos

  Arduino tasks

  • Do Arduino sketch based on Smartcar shield work

  Micropython tasks

  • Do alternate Micropython firmware

  If you'd like to get involved in any of that you could join the project team here, or chat to me on Twitter

• MikroBUS expansion

  Samuk • 03/04/2024 at 14:30 • 0 comments

  At one end of https://rosmo-robot.github.io/ you'll spot a MikroBUS expansion header, the thinking with this is that this gives access to the ~1200 official MikroBus click boards

  There is also scope for people to make expansion boards based on the very useful pinout.

  I started having a play with one today, tackling the all important question of how to give this robot silly eyes.
  

  
  
  

  In the image below you'll see a bunch of interfaces;
  

  • Pimoroni breakout garden I2C and SPI headers
  • UEXT female header for the open hardware Olimex sensors
  • Two I2C for the all important silly eyes OLED (haven't yet decided between the 1.3" or 1.5" pinout)

  
  

  The MikroBus header compliments the on-board Qwiic and I2C breakout garden header as an attempt to navigate the I2C Zoo maybe I should stick a Grove on the breakout board to complete the menagerie..
  

  This variant adds a Grove & Xiao camera for on board image processing 
  

  Read more
  

• Breakout garden I2C

  Samuk • 03/04/2024 at 09:44 • 0 comments

  
  

  Did some more edits on the PCB, including adding an additional I2C breakout header, I chose the Breakout garden pin order for this header.
  

  
  

  • Female header would enable users to plug in either some straight or 90degree pins
  • Alternately plug in a breakout garden socket
  • Enables plugging in the I2C range of Breakout Garden components
  • Also enables use of 4trionics ultrasonic sensor
  • Alternately you could stick some Dupont cables into it if that's more your jam

  
  
  

• Pluggable motors

  Samuk • 03/02/2024 at 19:38 • 0 comments

  Having a bunch of encoder cabling is quite messy, It is functional but also fiddly to connect. I've almost finished a version that includes pluggable motor sockets to make the cable connection easier and less error prone

  
  
  

• 1x, 2,x or 3x 18650

  Samuk • 02/28/2024 at 00:21 • 0 comments

  
  The robot can be configured to use 1x 2x or 3x 18650 batteries https://rosmo-robot.github.io/
  

• Remote control operational

  Samuk • 02/19/2024 at 20:49 • 0 comments

  
  

  
  

  
  

  So thanks to Microblocks I have a remote control bot that can pick stuff up now. Still having problems with the ROS2 build, but nice to have some progress.

  More info https://rosmo-robot.github.io/zio/
  

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