|Mar 13, 2014, 09:23 AM|
Alexmos BaseCam 3axis 32bit Brushless Gimbal Controller by Viacopter & Flyduino
With a new 32bit generation of 3axis Alexmos brushless controller knocking at the door, I´ll take the opportunity (on behalf of Flyduino and Viacopter) and start a new thread about this new masterpiece by Aleksey Moskalenko.
To keep the info of 8bit Alexmos and 32bit Basecam controllers devided, we will update all relevant informations here though most info on balancing, setup and tuning will stay valid.
Original Alemos 8bit controller thread:
You can actually order the 32bit boards now - delivery of the first batch has started:
Please read the manual first!
Please read the manual first!
New AutoTuning feature! Video by Aerialpixels
Before you start automatic tuning, its very important to properly configure hardware of your system:
motor outputs, “Power”, “Inverse” and “Number of poles” (latest 2 setting may be detected
automatically, as described in the user manual). Also, main IMU position should be configured and
accelerometer and gyroscope should be calibrated.
Board will work with 3S-6S lipos (8-25V)
Special driver IC´s being used to controll the motor driver, that helps to keep the mosfets cool during high current.
So it is possible to use 3A for each motor output.
The hardware will support all upcoming software features.
To configure the board you only need the USB Port and the Basecam Software (Windows, OSX, Linux)
which you can find here: http://www.basecamelectronics.com/
Or you can use a bluetooth module on the UART Port.
Current for each motor: 3A
board dimensions: 50x50
Hole pattern: 45x45mm, M3 holes
How to determin the correct IMUs for Cam & Frame:
General info on the Basecam site:
New firmware & GUI 2.42b6 for 32bitters is ready to go:
New Basecam Configuration Guide:
Basecam 32bit Tuning Guide by Aerialpixels
B32 Gimbal Controller User Guide by BeeWorks
GARUGs Review of the 32bit BaseCam Controller
Spreadsheet by Soul Patch Films for PIDs and other settings for different gimbals/motors
You can download a PDF with examplary PIDs & settings by Archikopter from the attachments below.
How to configure the new IMU (small format) for either Cam or Frame IMU
Close the appropriate solder jumper:
A0 is adress low (0x68), CAM IMU (default)
A1 is adress high (0x69), Frame IMU
If you only have 1 IMU it will default to CAM IMU, no matter what the adress is.
If you want to use this BT Module
to connect the 32bit AlexMos/BaseCam, set the Paritiy to EVEN on the Bluetooth Modul.
Establish a connection (the appropriate COM port @ 115200baud) between the BT Modul and an FTDI/USB-UART module (RX->TX, TX->RX, GND, 5V) and use Putty or any similar Terminal Emulator to set the Paritiy to "even" with this AT Command:
Type or copy it into the console and press enter within 5 seconds. Nothing else needs to be changed.
HC-04 AT Commands and General Info
New Android App
Demonstration of the new firmware 2.4
Setup & Tuning of 2.4 firmware
Stay tuned and come back to this page more often since informations will change as we go.
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|Mar 13, 2014, 02:09 PM|
Canada, AB, Calgary
Joined Sep 2011
I am sure there have been many tweaks to the firmware to take advantage of the 32 bit Processor. From what I have seen the dual IMU should be an excellent addition. On the web page it states: Optional second IMU, that will increase the short-term precision of the stabilization 10x-30x times and will make stable work in any frame position.
|Mar 13, 2014, 02:16 PM|
Always depends on the firmware that needs to make use of the advantages.
More & more FCs have been switching to 32bit ARM processors lately, so this will be the future anyway.
Other than the processing power the new boards provide many advantages over the v1/v2 boards like MosFets, up to 6s and 3A output for real big motors which can be used for huge gimbal motors, swinging heavy cameras of all kind.
|Mar 14, 2014, 04:18 PM|
So it shouldn´t be a big deal to use an I2C IMU as reference instead.
But ... we won´t mix up 8bit & 32bit stuff here, will we? .
|Mar 14, 2014, 06:24 PM|
Joined Nov 2012
I"ve experienced many issues with alexmos near cell towers, high voltage lines, radio towers...
I was told this is because I2C errors... Ferite rings, pull up rezistors only partially cure that...
So why no one thinks about getting rid of I2C and using different bus between IMU and controller? I was hoping this was the plan for future, but here I see the same approach?
|Mar 15, 2014, 12:47 AM|
Chile, Santiago Metropolitan Region, Stgo
Joined Feb 2012
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