Arduino + Wlan(shield ?) discussion

Forum 2005-2010 (read only) Hardware Development
1

Hi,

I'am planning to connect my Arduino to a Wlan module (Lantronix MatchPort - http://www.lantronix.com/device-networking/embedded-device-servers/matchport.htm l). My Goal is to have a unit sending Data direct to my Server Database. Maybe power over Solarpanels so it is real autarkic.

Before I start I'd like to here your opinion.
What do you think about the MatchPort Module, do you know a better Product.
MatchPort or MatchPort AR ?
Would you like WAP2 or is a simple connection OK.
Am I 'reinventing the wheel' - Are there any other Projects that try ore still have connected Arduino and Wlan ? (Deep Google couldn't show me any.)

Please participate with your opinions and whischlist !

Best JOL

2

Some Information I posted further in the Interfacinf Section:

(Moved this post from the interfacein Site)

Hi,

for a Project where I need to transmit Data to a server without PC outside the Building I'd like to use the lantronix.com MatchPort AR Wlan Modul.

Most things seem to be OK but I'm struggeling about the Serial connection.
The MatchPort Serial Interface is CMOS (Asynchronous) 3.3V while Arduino is TTL 5V.
Will I need to add an Levelconverter. If yes is the MAX3232 the right choice.
Or could I just go like ?

Arduino|Rx--------Tx| MatchPort
| |
| |
|TX--------RX|

Thanks for help !
JOL

Dates of the MatchPort Serial Interfaces:
Parameter |Symbol | Min | Typical | Max | Units |

Supply Voltage | VCC 3.15 | 3.3 | 3.46 | | Vdc |

CP, RX, CTS, BOOTP_EN#
Input Low Voltage = VCP_IL 0.8 Vdc
CP, RX, CTS, BOOTP_EN#
Input High Voltage = VCP_IH 2 Vdc
CP, TX, RTS Output Low
Voltage (IOL = 4 mA) = VCP_OL 0.4 Vdc

( Found in http://www.lantronix.com/pdf/MatchPort_IG.pdf )

I found this at the specs of the big Brother of the MatchPort AR(40$), the MatchPort (70$):

Serial Interfaces
Serial Input/Output
The unit has two serial ports compatible with RS232 serial standards at data rates
up to 921 Kbps. The serial I/O signals are 3.3V CMOS logic level and pins are 5V
tolerant. Serial signals connect to the OEM CPU/UART. For evaluation and prototype
work, it is convenient to have an external RS-232 interface that can connect to the
serial port on a PC. The MatchPort Demo Board has RS-232/422/485 transceivers to
implement this external interface.
If desired, use the CPs to create a DTE or DCE-style interface using any three
available CPs. To create these interfaces, connect the signals according to Table 2-2
and Table 2-4.

Hopefully it's the same for the MatchPort AR. But Maybe Ill get the Big one because it has two SerialPorts... ?