RFXCOM RFXtrx433 Especificações descarregar pdf (Página 46)

Chapter 4. Implementation 39

Figure 4.4.: The WiﬁCtrl on the left and the MiniCtrl without its antenna on the right. Both

models were generated by eagle3d and rendered with MegaPOV.

Each version addresses diﬀerent user groups: WiﬁCtrl is designed to oﬀer the full scope of functions

for professional use, whereas the MiniCtrl is a light weighted version of WiﬁCtrl with no WIFI,

which is mainly designed to be low-cost and of small size. It is intended for use in conjunction

with routers or computers, where the WIFI functionality is not needed. Due to the removal of

the WIFI module RN171 and the power jack, it is not a stand-alone platform anymore. Table 4.1

gives an overview of the diﬀerences.

WiﬁControl433 WiﬁCtrl MiniCtrl

MCU XMEGA192A3 XMEGA192A3U XMEGA32A4U

integrated USB no yes yes

WIFI yes yes no

IO-pins 22 22 8

USARTS 3 3 2

SPI 1 1 1

analog IO-pins yes yes no

av. power consumption [W] 0.6 0.5 0.1

size length x width [mm] 100 x 55 84 x 54 50 x 19

price [€] 50 45 15

Table 4.1.: The diﬀerences between WiﬁControl433, WiﬁCtrl and MiniCtrl.

The name WiﬁControl 433 was discarded, mainly because it was too long and took too much

space on the PCB, as it is printed on the silk screen as well as on the top copper layer. WiﬁCtrl

can be seen as its replacement. The Mini in MiniCtrl should suggest a small size, whereas the

Ctrl stands for its control functionality.

The following sections will elaborate the changes, starting with hardware issues.

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RFXCOM RFXtrx433 Especificações Página 46