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Parallax ELEV-8 Manual

Flight controller
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ELEV-8 Flight Controller (#80204)
The ELEV-8 Flight Controller is a single-board quadcopter control
solution, designed to control the Parallax ELEV-8 v3 quadcopter
(#80300).
The ELEV-8 Flight Controller features the Propeller P8X32A, a 32-
bit, 8-core microcontroller. Its multicore architecture allows
simultaneous sensor monitoring and motor control, without
interrupts. The ELEV-8 Flight Controller hardware, its C-language
firmware, and the accompanying Ground Station software for
configuration, diagnostics, and live telemetry, are all open source.
This product guide has been updated for the release of the ELEV-8 Flight Controller Rev B. For details,
see Revision History at the end of the document.
Note: This document only covers the Flight Controller Hardware, for information on the Firmware, look
under the Downloads and Documentation section of the #80204 product page.
Features
32-bit, 8-core, 80 MHz Propeller P8X32A microcontroller with 64 KB EEPROM
•
Wide supply voltage range compatible with 2S to 5S battery packs
•
Center-positive 3-pin power-in header to avoid reverse polarity connection
•
Micro-USB socket for configuration, testing and custom software development
•
Automatically selects between USB and external power sources
•
USB over-current protection when power supplied by USB
•
LSM9DS1 IMU (3D accelerometer, 3D gyroscope, 3D magnetometer)
•
LPS25H pressure sensor for altimeter and barometer data
•
•
RF module socket for wireless telemetry; XBee 900 MHz modules recommended
•
Battery voltage monitor with low-battery alarm
•
Piezospeaker for status alerts and alarms
•
Onboard WS2812B addressable RGB LED for status and flight mode indication
•
RGB LED expansion header for connecting up to 20 additional WS2812B RGB LEDs
•
Serial Tx/Rx duplex expansion port
•
Eight bi-directional receiver ports
•
Six bi-directional ESC/AUX ports for Parallax xRotor 20A ESCs
•
All 14 bi-directional ports are re-assignable, to allow up to 14 ESCs and motors
•
All headers are standard 0.1" spaced 3-pin headers
•
Unpopulated I2C bus header for custom applications
•
Convenient reset touch-button pad for firmware development
•
6 Indicator LEDs show the status of USB power/Tx/Rx, and RF ASC/Tx/Rx
•
3.3 V linear and 5 V switching voltage regulators
Copyright © Parallax Inc.
Web Site: www.parallax.com
Forums: forums.parallax.com
Sales: sales@parallax.com
Technical: support@parallax.com
ELEV-8 Flight Controller (#80204)
Office: (916) 624-8333
Fax: (916) 624-8003
Sales: (888) 512-1024
Tech Support: (888) 997-8267
v1.2 1/4/2017 Page 1 of 10

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Summary of Contents for Parallax ELEV-8

  • Page 1 Ground Station software for configuration, diagnostics, and live telemetry, are all open source. This product guide has been updated for the release of the ELEV-8 Flight Controller Rev B. For details, see Revision History at the end of the document.

  • Page 2: Key Specifications

    Weight: ~ 19 grams (0.67 oz.) Online Resources For instructions on using the ELEV-8 Flight Controller with the ELEV-8 v3 Quadcopter, see the tutorials at learn.parallax.com/elev-8. Install FTDI USB drivers for your operating system before connecting the ELEV-8 Flight Controller to your computer: http://www.ftdichip.com/Drivers/VCP.htm...

  • Page 3: Functional Description

    The Propeller can multiply its 5 MHz oscillator signal by up to 16 for a system clock frequency of 80 MHz. See the Propeller I/O Pin Assignments on page 9 for additional details. Copyright © Parallax Inc. ELEV-8 Flight Controller (#80204) v1.2 1/4/2017 Page 3 of 10...
  • Page 4 XBee modules. WARNING! Do NOT attempt to use 2.4 GHz RF modules with the ELEV-8 Flight Controller, including XBee 802.15.4 or XBee-PRO ZB series modules! This can cause interference on the 2.4 GHz range used by 2.4 GHz transmitters and receivers, resulting in unpredictable motor behavior.
  • Page 5 GND, and bi-directional communication (see the Propeller I/O Pin Assignments on page 9). These are typically connected to a standard ESC (Electronic Speed Controller) such as the Parallax xRotor 20A ESC (#750-90015) included in the ELEV-8 v3 Quadcopter Kit.
  • Page 6 If you need to download drivers, please check the resources section at the end of this document, or contact Parallax Technical Support for assistance.
  • Page 7 The I2C header pads have 0.1” pin spacing, and provide advanced developers access to the Propeller I2C bus. Please refer to the Flight Controller schematic for information required to make use of this feature; it is available for download from the #80204 product page at www.parallax.com. Copyright © Parallax Inc.
  • Page 8 Flight Controller. The 3.3V and GND pads will accept standard 0.1" spaced 2-pin headers. Copyright © Parallax Inc. ELEV-8 Flight Controller (#80204) v1.2 1/4/2017 Page 8 of 10...
  • Page 9 Serial Expansion Bus (XP) TX PIN_XBEE_RX RF module RX (Data In) PIN_XBEE_TX RF module TX (Data Out) RF module ASC (High when module PIN_XBEE_ASSOC associated) PIN_RC_2 Receiver port 3 Copyright © Parallax Inc. ELEV-8 Flight Controller (#80204) v1.2 1/4/2017 Page 9 of 10...

  • Page 10: Revision History

    Version 1.2: Updated for board version Rev B. New images, updated references to board labels that have changed, added sections for Accessory Power Header Pads, SRR/DSM Header Pads. Copyright © Parallax Inc. ELEV-8 Flight Controller (#80204) v1.2 1/4/2017 Page 10 of 10...

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