User Manual
Version 1.6
2017-12-10
RaspBee
– ZigBee addon board
www.dresden-elektronik.de
Page 21 of 27
11.1. Assemble the service header
The service interface provides the microcontroller programming interface of the radio
module. It is useful to assemble a 50 mil 10-pin header on the top side to ensure a proper
connection. We recommend the use of the listed header:
MOUSER ELECTRONICS order number: 855-M50-3500542
FARNELL order number: 1022305
DIGI-KEY order number: 952-1383-ND
Figure 5: RaspBee service header (default not assembled)
The pin description can be found in
Section 10
in
. A detailed description of suitable
programmers and related software tools are listed in
Note:
Improper handling in respect of erasing or overwriting the MCU internal flash
or EEPROM completely or in parts may result in an unusable RaspBee unit.
Modification of the pre-allocated EEPROM memory sections or removal of the
pre-installed bootloader will irreversibly preclude restoring, booting or
upgrading the shipping firmware at all. dresden elektronik will neither support
such modifications (see
Section 6.2
11.2. Using an external antenna
External antennas will be often used if an improved radio characteristics performance is
needed or the device is put into a metallized enclosure. In this case it is possible to assemble
a surface-mount coaxial connector. The footprint is designed to use the coaxial connector
‘U.FL-R-SMT-1(10)’ by HIROSE. It can be obtained from i.e. the following distributors:
MOUSER ELECTRONICS order number: 798-U.FL-R-SMT-110
FARNELL order number: 1688077
DIGI-KEY order number: H11891CT-ND
Additionally the terminating resistor must be removed from the antenna port. Assemble a
22 pF coupling capacitor and a 10 k resistor in parallel directly next to the U.FL connector.
The RaspBee has been tested and measured with the approved antenna(s) listed in
Section 12.3
