EasyBee3 Board User Manual
Contents
1. Easy Bees All Mikroelektronika s development systems feature a large number of peripheral modules expanding microcontroller s range of application and making the process of program testing easier In addition to these modules it is also possible to use numerous additional modules linked to the development system through the I O port connectors Some of these additional modules can operate as Stand alone devices without being connected to the microcontroller CO MikroElektronika SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD waking it si ple Easy Bee3 Additional Board The Easy Bee3 additional board is used for wireless communication at short distances and with low power consumption Wireless communication is enabled due to a ZigBee module MRF24J40MA provided on the Easy Bee3 board Some of the key features of this module are data rate up to 250kbps 2 4GHz operating frequency power consumption 20mA up to 120 m range etc Connection between the additional board and a microcontroller is established via a 2x5 female connector supplied on the additinal board and a 2x5 male connector on the development system Communication between them is performed via a Serial Peripheral Interface SPI Since the additional board may be connected to different development systems it is necessary to select the appropriate microcontroller pins to be used for SPI communication DIP switches SW1 and SW2 on the additional board are used for2. 8 A o o gt N oe MISO 3 3 li i MRF24J40MA CN2 VCC BRD BLOGVECI VCC BRD pall VCC REG BS MC33269DT 3 3 sof 10uF EY 3 3V Dev Board fal ovce sn 7ALVCC3245 SV Dev Board OVCC REG J1 Figure 3 Easy Bee3 additional board Figure 4 Easy Bee3 additional board connected to a development system MikroElektronika wo ya Je SN jpejuoOo 0 ajejisey JOU OP sjesodoid sseuIsng JO S USWILUOD Suolsenb Aue SN NOA yi 5 poddns ue woo sou MMM a bwa WOJ SJOJJIWUMMM Je ojISgoM JNO YSIA as ajd sjonpoud malen ao UEeoj op fhem NOA yi Cd 1dOM d3dAqAJ34W4 YO4 SNOLLNTOS JIVMAJVH ANY JYYMLJOS LI FE l fai oue
3. this purpose The bottom of the board provides a table indicating which switches on the DIP switches SW1 and SW2 should be used depending on the development system in use Figure 2 AEST OC ee ZigBee module MRF24J40MA Ends of flat cabels are provided with 2x5 female connectors A Sen g mr Lbs jj S n L 5U 3 3y aa a ji 2 LH Figure 1 Easy Bee3 additional board The ZigBee module requires the 3 3V power supply voltage for its operation Since different development systems require different voltage levels it is necessary to adjust the additional board s voltage level to the development system s voltage level It is performed by a voltage regulator supplied on the additiona board Jumper J1 is used to select power supply voltage for the additional board If the board is connected to a 5V development AN system it is necessary to place jumper J1 in the 5V position For 3 3V development systems jumper J1 should be placed in the 3 3V position In addition to the voltage level adjustment it is also necessary to adjust voltage signals provided by the ZigBee module The additional board features transceivers 74LVCC3245 and 74LVC1T45 that serves as voltage level translators CKO EL ka meee ETA mi Yon am OUD Re Worip Figure 2 Back of the Easy Bee3 board MikroElektronika VCC BRD O VCC BRD VCC 3 3 O vcces ei C15 Noy Ne ee T00nE 03 fe DIRE so Vi la INT 3 3 si 74LVC1T45 NS
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