Proposal 30mm x 50mm Autopilot with ATMEGA 1280
Dear all,
I plan to build a 30mm x 50mm Autopilot with ATMEGA 1280. Some details:
- 4 analog pins to read 2 ADXRS610 and 2 axis from ADXL322 (each roll and pitch).
- I2C to read a HMC6352 (yaw).
- ISP
- flash at UART 0
- radiotronix tranceiver at UART 1
- GPS at UART 2 (read only)
- 4 PWM output for servo motors and the motor driver
- I will use the summation signal from a RC receiver via interrupt
With this autopilot I plan to fly a 40 cm wing span model.
The weight will be in the order of 200 g.
What do you think about this autopilot?
Best regards
Tumba
I plan to build a 30mm x 50mm Autopilot with ATMEGA 1280. Some details:
- 4 analog pins to read 2 ADXRS610 and 2 axis from ADXL322 (each roll and pitch).
- I2C to read a HMC6352 (yaw).
- ISP
- flash at UART 0
- radiotronix tranceiver at UART 1
- GPS at UART 2 (read only)
- 4 PWM output for servo motors and the motor driver
- I will use the summation signal from a RC receiver via interrupt
With this autopilot I plan to fly a 40 cm wing span model.
The weight will be in the order of 200 g.
What do you think about this autopilot?
Best regards
Tumba
- Attachments:
Replies to This Discussion
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ModeratorPermalink Reply by Chris Anderson on -
You might want to review the discussion of ArduPilot Mega (out early next year) before you decide to roll your own. It will have most of these features and more...
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Permalink Reply by Tumba on -
I have seen in the dicussion the new ArduPilot Mega will be a really good one. I have some experiencies with the paparazzi project and I think paparazzi is to large in dimension and function. I hope the new ArduPilot Mega will be smaller. I am very interested to have small dimensions...
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Permalink Reply by Tumba on
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I changed the design of the board. Now the dimensions are 30mm x 40mm. :-) See attachment.
My design principle was to reduce everything. I have only 4 servo outputs: motor, pitch, roll and one to move something. I have the stabilization 5.0 V and 3.3V on the board. The servos have the 5V from the motor controller.
RC sum signal: I think this is the best way to read RC signals. You have everything on one wire. There are some receivers on the market, they have the sum signal. http://www.mikrokopter.de/ucwiki/DSL4top
There is also an overview, about 43 receivers you can modify: http://www.mikrokopter.de/ucwiki/KategorieEmpf%C3%A4nger?action=show or http://www.mikrokopter.de/ucwiki/R607FS
I modified a GWS receiver and a Jeti Rex 5 receiver without problems.
Best regards
Tumba - Attachments:
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brd.png, 47 KB
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ModeratorPermalink Reply by Krzysztof Bosak on -
So this is going to be many boards, using separate IMU board...
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