Dean has posted a pdf spec sheet for AttoPilot. Here are the basics:
Specifications and Features:
Small size: 1.0 ounce control unit 1” x 1” x 1.5”, 2.6 ounces total with GPS and all sensors
6 servos and 6 R/C inputs: 4 flight control + 2 auxiliary servos. Elevon and V-tail mixing are easy to setup. 100% compatible with all 1-2ms pulse 5V
and 3V logic R/C receivers, and the newer 2.4GHz R/C systems
Flight modes (4):
• Autonomous – specific coordinate flight plan, or template plan
• Autopilot bypass; remote radio control with Elevon or V-tail mixing
• Remote radio control with autopilot stabilization assistance for pitch and roll
• Remote radio control with autopilot stabilization for pitch and roll plus navigation; fly by wire
Stabilization system: 50 Hz attitude control with automatic control gain scheduling based on airspeed. Elevator gain scheduling for optimal altitude
control through turns
Onboard data logging: 40+ parameters logged as a comma-delimited .txt file to removable micro-SD media
Two-way telemetry: Downlink of 3 nmea GPS sentences plus a proprietary $ATTO nmea message for live moving map in 3D plus virtual cockpit, real
time flight plan editing, commanded mission abort, and semi-autonomous flight
List of sensors:
• Pressure (2): Pitot airspeed and Barometric altitude
• 3-axis horizon sensing with dynamic bias correction using other sensors as cross reference
• 5Hz GPS with added data smoothing via real time least squares fits
• Power sensing: 0-53 Volts, 0-92 Amps, 0-4900 Watts. Energy consumption tracked to 210 Amp hours (Ah)
• Auxiliary analog input for user defined function (temperature probe, 2nd voltage or current sensor, etc…)
GPS: 5Hz update rate, 10 ft CEP (circular error of probability), DGPS (differential GPS) enabled
Waypoints:
• 100 user defined waypoints: lat, lon, altitude, airspeed, and multiple trigger options
• Lat and Lon to 5th decimal degrees (3 ft) and 3 ft for altitude
• Return-to-home position: defaults to start location or specify at a remote location
• Create waypoint paths graphically with point and click ease on your PC, with or without internet connection
• Waypoint file optionally may be marked as a template. AttoPilot remaps a template path to current location upon GPS lock at power up.
Useful for photo mapping grid at various flight locations without a laptop PC in the field. A big saving of pre-flight setup time for multiple
repeated missions in various locales.
Triggers:
• RTL (return to launch) based on low pack voltage, mAh consumption, or maximum time allotment
• Loiter at waypoints, specify circle radius, altitude, direction, and duration
• Auxiliary servo or logic controls at specified waypoints or between waypoints with time or distance intervals
• Distance interval triggers are perfect for grid photo mapping
Barometric altitude: Estimation to 0.3 ft and real world control to +/- 6 ft. Barometric climb rate estimated to 0.3 ft/s
Maximum Limits:
• Distance per waypoint leg: unlimited
• Flight plan total distance: unlimited
• Turn rate: 120 deg/s
• Pitch and roll rate: 300 deg/s
• Pitch angle: 60 deg
• Roll angle: 60 deg
• Altitude: 30,000 ft barometric and 60,000 ft GPS
• Airspeed: 125 mph via Pitot tube
• Speed: Above 125 mph, GPS speed is used
January (depending on cables arriving and plastic cases done at injection molder). Although Atto does a heck of a lot more than the Picopilot NAT (in fact it exceeds the U3500FW but with price savings of thermopiles), I decided to start Atto v1.8 at $800 to go head-to-head with the Pico-NAT.
The digital values are there, but video resolution was too poor to show it. I also think they number boxes should be about 2X the size. I did more flights this morning with 2x the video resolution, and will post a 14th video on RCGroups on the same page
Very nice. I cannot wait for the final product. I am building an airframe currently to try out your AttoPilot.
One suggestion. I have found that reading "gauges" can be difficult when you are in sun light etc. It would be great if things like airspeed and altitude could have an optional "digital" display format. Also please include the ability to display parameters in metric.....some of us are strange...
Michael, I lost the link you sent for MicroGS... I can't even seem to find it here. Anyway, I have the telemetry downlink data you asked about. Today I did a 20 minute flight with system on the ground logging telemetry downlink byte stream to micro-SD card. I can give it to you as a "TEL.txt" file, or send you a simpe hardware item and micro-SD that replays the data into a USB COM port as if it were a live downlink. Should be very useful for testing a live virtual cockpit once you get the parsing setup.
Oops, now I see it is MicroGCS, not microGS.. will try again
Comments
January (depending on cables arriving and plastic cases done at injection molder). Although Atto does a heck of a lot more than the Picopilot NAT (in fact it exceeds the U3500FW but with price savings of thermopiles), I decided to start Atto v1.8 at $800 to go head-to-head with the Pico-NAT.Any ideas when it will be avalible and what we can expect to pay????
(going to be used on a moddified 4.0m motor glider with gimbal...... I Hope ;)
Cheers
Jamie
Very nice. I cannot wait for the final product. I am building an airframe currently to try out your AttoPilot.
One suggestion. I have found that reading "gauges" can be difficult when you are in sun light etc. It would be great if things like airspeed and altitude could have an optional "digital" display format. Also please include the ability to display parameters in metric.....some of us are strange...
Good luck.
C
This is just display of some downlinked parameters, not uplink control of plane (coming soon). Check it out!
MicroGCS still will not run on W2K.
Jim
Oops, now I see it is MicroGCS, not microGS.. will try again
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