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Re: [Paparazzi-devel] quadcopter using twog
From: |
Christophe De Wagter |
Subject: |
Re: [Paparazzi-devel] quadcopter using twog |
Date: |
Mon, 2 Jul 2012 09:02:54 +0200 |
Dear Sahul,
The 8 PWM outputs behind the decade counter of the TWOG are low speed (ca 60Hz) outputs. These are perfect for planes but a little slow for quadcopters that fly significantly better with faster (500Hz) control loops.
However, the LPC21 can also make those fast PWM pulses, just like the STM32 does on the Lisa boards. Actually: the classix autopilot did that. So it should be a matter of finding which where the 5 PWM pins on the Classix , finding them on the TWOG and changing the driver repeat frequency.
Concerning differences between TWOG and booz, there is one last important difference: for autonomous hover one really wants a barometer!
-Christophe
On Mon, Jul 2, 2012 at 6:53 AM, Sahul Venkat
<address@hidden> wrote:
Hi,
Hi,
On going thru the TINY board architecture , i found the availability of 8 different PWM outputs .Is there any specific reason why these cannot be employed for commanding the ESCs?Or is there any specific reason as to why the I2c bus needs to be used to command the ESC's?
Also , do the general ESC's like the emax ESC's have the capability to interface with I2C.
Thanks & Regards,
sahul venkat.
On Mon, Jul 2, 2012 at 4:40 AM, Sahul Venkat
<address@hidden> wrote:
Hi Prof.Heinrich,
Thank you very much for answering my query,
Can you please explain the connection of motor controllers in detail and please send me the interfacing diagram of the motor controllers with the tiny board.
Thanks and Regards
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