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Crazyflie 2.x DWM1000 Loco Positioning Node for Indoor Positioning System,anultra-wide-band radio module

The Loco Positioning node is a multi-functional node in a Loco Positioning system, it can act either as an Anchor or Tag. Most commonly it is used as an Anchor, being part of the reference base for the system. Alternatively is can also run in Tag mode when it can be attached to an object to track, for instance a robot.

 

$170.00
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PRODUCT DETAILS

The Loco Positioning node is a multi-functional node in a Loco Positioning system, it can act either as an Anchor or Tag. Most commonly it is used as an Anchor, being part of the reference base for the system. Alternatively, it can also run in Tag mode when it can be attached to an object to track, for instance a robot.

Features

  • Powerful chip support: Based on STM32F072 Cortex-M0 MCU can enable fast and accurate data processing and control
  • Ultra-wideband communication: Built with the off-the-shelf DWM1000 UWB radio and based on IEEE802.15.4a UWB PHY standard.
  • High precision ranging: Measures distances to Loco Positioning Node Anchors with accuracy within a 10 cm range
  • Supports Anchor, Tag or Sniffer mode: Can be used as a standalone system with some Nodes acting as Anchors and one or more nodes acting as Tags
  • Upgradable and configurable via USB

Description

The Loco Positioning Node is a versatile positioning device that mainly is used as an Anchor in a Loco Positioning system. The system measures the distance between Nodes and Tags, and from those distances, the absolute position of objects carrying Tags can be calculated.

The base of the Loco Positioning system is a set of Anchors that are positioned in the room (compare to the satellites in GPS), they are the reference. The other part of the system is one or more Tags (compare to the GPS receiver) that are fixed to the object(s) that are to be tracked. By sending short high-frequency radio messages between the Anchors and Tags, the system measures the distance from each Anchor to the Tags and calculates the position of the Tags from that information.

Note

This product is intended to be used together with Loco Positioning Deck and can not be used standalone. For more information on the Loco Positioning System please see Loco Positioning System tutorial.

The Loco Positioning system

The default mode (Two way ranging) of the Loco Positioning system supports the positioning of only one Crazyflie so to position multiple Crazyflies the system must be switched to the TDoA mode. The TDoA mode works like an indoor GPS system where the Crazyflies only listen to positioning information from the anchors which makes it possible to position a large number of drones. Due to the nature of TDoA the position estimation works best in the space inside the anchors (the convex hull) and we recommend using 8 anchors for TDoA.

Application

  • teaching study
  • High-density cluster application
  • trajectory planning
  • Indoor positioning and navigation
  • Ranging system

Specifications

Items

Specifications

Electrical

MCU

STM32F072(Cortex-M0, 48MHz, 16kb SRAM, 128kb flash)

Module

Decawave DWM1000

Wireless

IEEE 802.15.4 UWB

Automatic expansion deck detection

1-wire memory

High-precision pressure sensor

LPS25H

connector

micro-USB

Serial connector compatible with ESP8266 module (not populated)

Port

Full speed USB device

FTDI debug(not populated)

Power

by USB, 6 mm barrel jack (5 - 12V) or screw terminal (5 - 12V)

Consume Current

Max 180 mA

Radio

Operating frequency

3.2 - 7 GHz

Channel bandwidth

500 MHz

Ranging

Ranging accuracy

±10 cm

Maximum tested range

10 m

Mechanical

Weight

13.3 g

Size (WxHxD)

65x40x13 mm

Installation

4 × holes for M3 screws

Nr of anchors required: theoretical minimum of 4 for 3D positioning. More anchors add redundancy and accuracy, up to 8 supported.

Hardware

ID

Type

Description

1

Connector

micro-USB for power and communication

2

Connector

DC-jack (5V)

3

Connector

Terminal (5V)

4

Button

Reset

5

Connector

Designed for ESP8266 but can be used for other things. Note: Pin-out changed between RevD and RevE (see blow)

6

Button

If pressed and held during reset or power on this will put the board into DFU bootloader mode. When the system is up and running the button is unused, but could be used to trigger functionality in the firmware.

7

Connector

SWD connector for programming and debugging MCU. Uses same pin-out as Crazyflie 2.X.

8

Connector

For FTDI serial-to-USB cable (TTL-232R-3V3). Can be used as a serial port for debugging and to power the board. Note that signals are 3V3 and power is 5V.

9

Mounting

M3 mounting holes

LED legend:

LED

Color

Controlled by

Description

POWER

Blue

MCU

On when board is powered

RANGING

Red

MCU

Blinking when ranging is in progress

SYNC

Green

MCU

TDB

MODE

Yellow

MCU

On in Anchor mode, off in Tag mode and blinking in Sniffer mode

TX

Red

DWM1000

Transmitting

RX

Green

DWM1000

Receiving

SFD

Yellow

DWM1000

Received packet timestamp

RXOK

Red

DWM1000

Packet received without error

Part List

Loco positioning Node

×1

ECCN/HTS

HSCODE 8529101000
USHSCODE 8517180050
UPC
EUHSCODE 8517180000
COO CHINA
RoHS 1

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