Hello,

this is the next BBBmini Rev. 1.6 wish list. After discussion I will sort the requests into YES, MAYBE, NO.

YES:

  • Add second IMU
  • Add I2C bus pull up resistors
  • Add WS2812 LED support
  • Remove HC-SR04 support (results are not as expected)
  • Add Buzzer support
  • Add Power button header
  • Add Level shifter / remove resistor voltage divider

MAYBE:

  • Switch to 1206 SMD parts, because there is not enough space left on the PCB

NO:

  • rfm23bp support (HF and no driver yet)
  • Reduce PWM channels
  • IMU heating
  • Remove CAN bus support
  • Change PCB outline for BeagleBone Green Wireless

Regards

Mirko

Views: 1802

Replies to This Discussion

Hello Linus,

Just think of it,  the CANBUS footprint is 15 x 35mm (525 sq) out of 43x55 mm (2,365sq)  usable space on the board, so there is 22% of total space dedicated to this option. I wish that we could get affordable CANBUS devices but it seems quite remote as of now..

Concerning  SMD, the Level Shifter could be a good candidate for this option because it is just one chip and the format (PW package) is doable with a soldering iron, flux and practice. But we might lose a couple of interested DIYers because it is one step beyond through-hole building.

Please comment, best regards

Hi Patrick,

yes, using SMD parts will not fit the targeted user base though some space could be made free for new ideas.
Hopefully i can buy one of these available CAN ESC's soon for a Rover / Plane to get the ball rolling.

I wonder what makes Cleanflight and the naze acro bard work with the HC-SR04.
https://www.youtube.com/watch?v=Ury7ZGCPyO4

The sensor is too cheap to expect wonders but what are the options available for the budget ?

Cheers
Linus

Hey Linus,

I putted my ''orange crush'' , under test with the sonar, and it just works fine on a flat hard ground at a low altitude (10 - 50 cm) .  So it is ideal to test in the garage or on a tennis court ;-), that is about what the SR04 can accomplish.

(this baby is made of plywood and is running on a naze32 + cleanflight. I installed the bluetooth telemetry for the test. generally it is flying with the camera deck installed)


Hello Patrick,

thanks for your test. That is the distance I can reach with my BBBmini HC-SR04 too. I think we can skip HC-SR04 support, what do you think? 

Regards

Mirko


Patrick Poirier said:

Hey Linus,

I putted my ''orange crush'' , under test with the sonar, and it just works fine on a flat hard ground at a low altitude (10 - 50 cm) .  So it is ideal to test in the garage or on a tennis court ;-), that is about what the SR04 can accomplish.

(this baby is made of plywood and is running on a naze32 + cleanflight. I installed the bluetooth telemetry for the test. generally it is flying with the camera deck installed)

Hello Mirko,

Agree , if someone really want to work with sonar, the best is to get a Maxbotic Sonar on I2c.

The only sad thing is that, it is a real good demonstration of the PRU capabilities.

pulsed light lidar lite is awesome and does not work well with I2C, the PRU capabilities of the bbbmini will be perfect for it

Hello Patrick,

the PRU will then be used for the WS2812 LED driver :-)

Hello Mirko,

That's right, this is an important feature for both fun and safety, are you planning to use this ? : https://github.com/Yona-Appletree/LEDscape

Anemos Tech,  your suggestion is interesting, but these are no longer available. Here is an update from Robotshop concerning on the new -still to come ''Garminised'' release 3 : 

Message from Customer service: Garmin and Pulsed light are currently working on a new and improve version of the Lidar Lite. The newer model, LIDAR-Lite v3, will be using a different chip for the signal processing and interface. This is mostly due to the many issues the previous chip had related to I2C bus handling and other less noticeable problems.



Linus said:

I am voting for leaving CANBUS on the Board as i want to test it when more cheap CAN ESC's show up. Its just that no one developed a ~50€ version yet.

It is now available... How can we justify that spending 360$ on esc might really do a difference ?

Zubax Robotics Orel 20 ESC, BLDC Motor Controller, CAN, 20A, 9-18V, PX4 Sapog

Brand: Zubax Robotics
Product Code: Z20ESC918
Availability: 95
$79.00

I will buy one and test it on a rover :) Thanks Patrick for the hint!

Looks like I'm a bit late to the discussion...

My suggestion would be to include SMD footprints for DF13/Picoblade sockets to match those provided by the PixHawk.  Keep the existing 0.1" headers on the board but provide the option to use standard connectors. 

Love the board!

Hi Tim,

it is not to late, Rev 1.6 is not ready now, but will be in 2016.

Regards

Mirko

RSS

© 2019   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service