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WEPTECH elektronik GmbH of 22 V.1.0.1

6LoWPAN Module

COUA

Quick Tour: Eval Board


Table of Contents

1. Introduction.......................................................................................................................... 4

2. Contents ............................................................................................................................... 4

3. Set-Up procedure .................................................................................................................. 4

4. Development Board .............................................................................................................. 5

4.1 Overview .................................................................................................................................. 5

4.2 Schematics ............................................................................................................................... 6

4.2.1 Overview .......................................................................................................................... 6

4.2.2 Coua Module ................................................................................................................... 7

4.2.3 X1 ..................................................................................................................................... 8

4.2.4 X2 ..................................................................................................................................... 9

4.2.5 Antenna (only dev Board with SMA connector) ............................................................ 10

4.2.6 Reset and JTAG Interface .............................................................................................. 11

4.2.7 USB / LDO ...................................................................................................................... 11

4.2.8 USB / LDO Subsystem .................................................................................................... 12

4.2.9 LDO ................................................................................................................................ 12

4.2.10 USB ................................................................................................................................ 13

4.2.11 UART jumper block ........................................................................................................ 13

4.3 Layout .................................................................................................................................... 14

4.3.1 Top Overlay ................................................................................................................... 14

4.3.2 Top Layer ....................................................................................................................... 16

4.3.3 Bottom Layer ................................................................................................................. 18

4.3.4 Dimensions and Footprint ............................................................................................. 20

5. USB-Interface ...................................................................................................................... 21

6. 868MHz antenna with SMA connector ................................................................................. 21

7. 868MHz antenna with U.Fl connector .................................................................................. 21

8. USB cable............................................................................................................................ 21


Table of figures

Figure 1 Coua development board .......................................................................................................... 5

Figure 2 Schematic Overview: Development board ................................................................................ 6

Figure 3 Overview Detail: Coua module. ................................................................................................. 7

Figure 4: Overview Detail: Pinout connector X1 ..................................................................................... 8

Figure 5 Overview Detail: Pinout connector X2 ...................................................................................... 9

Figure 6 Overview Detail: SMA antenna connector .............................................................................. 10

Figure 7 Overview Detail: Reset and JTAG interface ............................................................................. 11

Figure 8 Overview Detail: USB / LDO ..................................................................................................... 11

Figure 9 Schematic: USB / LDO Subsystem overview ............................................................................ 12

Figure 10 USB / LDO Detail: LDO ........................................................................................................... 12

Figure 11 USB / LDO Detail: USB interface ............................................................................................ 13

Figure 12 USB / LDO Detail: UART jumper block ................................................................................... 13

Figure 13 Top overlay assembly variant 01 (with SMA) ........................................................................ 14

Figure 14 Top overlay assembly variant 02 (without SMA) .................................................................. 15

Figure 15 Top layer assembly variant 01 (with SMA) ............................................................................ 16

Figure 16 Top layer assembly variant 02 (without SMA) ...................................................................... 17

Figure 17 Bottom layer assembly variant 01 (with SMA) ...................................................................... 18

Figure 18 Bottom layer assembly variant 02 (without SMA) ................................................................ 19

Figure 19 Dimension and Footprint Coua module ................................................................................ 20


1. Introduction The evaluation board with the radio module Coua is an easy and fast way to start with the

development of the Coua RF module. It is made to have an easy access to all of the connections of

the Coua module. It shows 2 different ways to connect an antenna. Every development module

includes a pin-header to connect a programming / debugging adapter. Additional to that, the

development board provides a USB-Connector to supply the RF-Module and to get a Virtual-COM-

Port connection to the Module.

The module Coua is a single embedded ultralow power and cost-effective Sub-1-GHz radio module.

With 5,5 mA, the module stands out due to a very low current consumption of its receiver. The radio

module is supported by the open source operating platform Contiki. Applications can be easily

integrated in the processor on the stack. All of the IOs available are routed to the outside, so that

various sensors and actuators can easily be realized. The WEPTECH 6LoWPAN Gateway, which also

uses this free operating system, can perform as a receiver for transferring data to a server.

2. Contents The development kit contains:

- One (1) development board with SMA antenna connector

- One (1) development board without antenna connector

- One (1) 868MHz antenna with SMA connector

- One (1) 868MHz antenna with U.Fl connector

- Two (2) USB cables

- Four (4) 10-pin headers

3. Set-Up procedure The board is supported by Weptech’s fork of the Contiki OS which you can find at

https://github.com/Weptech-elektronik/contiki. Under platform/coua/README.md of that

repository you can find an extensive Readme which will guide you through the setup procedure,

driver installation, and the available software examples under examples/coua.

The repository contains a separate branch, “coua-example-peripherals”’, which shows how to adapt

the platform code once you connect the Coua to additional hardware. For that example, we have

connected an LED to DIO8, i.e. pin 4 of header X1, and a push button with circuitry to pull DIO9, i.e.

pin 3 of header X1, low when the button is pressed.

https://github.com/Weptech-elektronik/contiki


4. Development Board

4.1 Overview

Figure 1 Coua development board

Note: The two dev-boards can be separated by breaking the PCB along the separation line.

separation line


4.2 Schematics

4.2.1 Overview

Figure 2 Schematic Overview: Development board


4.2.2 Coua Module

Figure 3 Overview Detail: Coua module.


4.2.3 X1

Figure 4: Overview Detail: Pinout connector X1


4.2.4 X2

Figure 5 Overview Detail: Pinout connector X2


4.2.5 Antenna (only dev Board with SMA connector)

Figure 6 Overview Detail: SMA antenna connector


4.2.6 Reset and JTAG Interface

Figure 7 Overview Detail: Reset and JTAG interface

4.2.7 USB / LDO

Figure 8 Overview Detail: USB / LDO


4.2.8 USB / LDO Subsystem

Figure 9 Schematic: USB / LDO Subsystem overview

4.2.9 LDO

Figure 10 USB / LDO Detail: LDO


4.2.10 USB

Figure 11 USB / LDO Detail: USB interface

4.2.11 UART jumper block

Figure 12 USB / LDO Detail: UART jumper block


4.3 Layout

4.3.1 Top Overlay

Figure 13 Top overlay assembly variant 01 (with SMA)


Figure 14 Top overlay assembly variant 02 (without SMA)


4.3.2 Top Layer

Figure 15 Top layer assembly variant 01 (with SMA)


Figure 16 Top layer assembly variant 02 (without SMA)


4.3.3 Bottom Layer

Figure 17 Bottom layer assembly variant 01 (with SMA)


Figure 18 Bottom layer assembly variant 02 (without SMA)


4.3.4 Dimensions and Footprint

Figure 19 Dimension and Footprint Coua module


5. USB-Interface The USB interface is realized with the Virtual Serial Port chip FT234XD from FTDI. The driver can be

downloaded from the FTDI webpage (http://www.ftdichip.com/FTDrivers.htm). To use the serial port

functionality ensure that the jumpers J2 (FTDI TX), J3 (FTDI RX), J4 (FTDI #RTS) and J5 (FTDI #CTS) are

closed.

In addition, the radio module can be powered via the USB interface. The LDO on the development

board regulates the 5V USB voltage to 3.3V. To power the Coua radio module with USB, ensure that

jumper J1 is closed.

6. 868MHz antenna with SMA connector The 868 MHz antenna with SMA connector is the ANT-868-CW-RH-SMA from Linx technologies. For

more information about the SMA antenna, consult the datasheet at

https://linxtechnologies.com/wp/wp-content/uploads/ant-868-cw-rh.pdf.

7. 868MHz antenna with U.Fl connector The 868MHz antenna with U.Fl connector is the 66089-0830 from Anaren. For more information

about the U.Fl antenna, consult the datasheet at https://www.anaren.com/sites/default/files/Part-

Datasheets/66089-xxxx%20Antenna.pdf.

8. USB cable The USB cables are standard USB-A to micro USB cables.

http://www.ftdichip.com/FTDrivers.htm

https://www.anaren.com/sites/default/files/Part-Datasheets/66089-xxxx%20Antenna.pdf

https://www.anaren.com/sites/default/files/Part-Datasheets/66089-xxxx%20Antenna.pdf


WEPTECH elektronik GmbH

Ostring 10

D-76829 Landau

http://www.weptech.de

[email protected]

Tel: +49 6341 9255-0

Fax: +49 6341 9255-100

Note:

The information, instructions and descriptions in this manual refer to the actual operating and

service conditions herein.

For technical questions, safety notes or technical failure, please contact WEPTECH elektronik GmbH.

We reserve the right to technical modifications.

http://www.weptech.de/

mailto:[email protected]

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