this is the next BBBmini Rev. 1.6 wish list. After discussion I will sort the requests into YES, MAYBE, NO.
- 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
- Switch to 1206 SMD parts, because there is not enough space left on the PCB
- rfm23bp support (HF and no driver yet)
- Reduce PWM channels
- IMU heating
- Remove CAN bus support
- Change PCB outline for BeagleBone Green Wireless
the PRU will then be used for the WS2812 LED driver :-)
pulsed light lidar lite is awesome and does not work well with I2C, the PRU capabilities of the bbbmini will be perfect for it
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.
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?
Patrick Poirier said:
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)
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.
The sensor is too cheap to expect wonders but what are the options available for the budget ?
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
don't want to request to much without actually contributing to the PCB but is SBUS output feasible maybe?
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.
Regarding SMD I think i could mount a SMD WS2812 LED on to the board easy, transceiver, resistors etc would probably work as well with some practice.
Rev. 1.6 should get a new low profile case and with Display in the lid then.
you are right, most users need not more than 6 PWMs, but I will not reduce the number of channels yet.
Patrick Poirier said:
thanks for the suggestion, but I do not want to put HF on the BBBmini. And first there must be a working driver for the rfm23bp.
Anemos Technologies said: