4 replies to this topic

[Peter Forstmeier]

Hi List,

i have an ID20 RFID Chip working and now i'm think about a small Worktime Control System for about 10 - 20 Employees.

Is anybody out how have experiance in a Project like this.

What i'm specially interested is:

 

- Secure the CheckIn-CheckOut

 

- Storing the DataTime's/Employee#  on SD Card or have a Network Connection to a PC (mqqt or others)

 

-What is the recommended way to Connect to PC for reading out the values(per day/per week)

 

Thanks in advance

Peter

 

 

 

[dino4net]

Hello Peter,

 

Normally devices like this are always connected to the Ethernet and use a dedicated server in the network.

The basic date, e.g. name, ID of your employees and current time, is send to the Netduino and stored there. So you can show a nice message on the display.

Events on the Netduino, stamp in / out, are send direct to the server.

 

In the case of a network problem, the Netduino has to store the data locally and send it later.

 

Securing the check in / out depends on how much you want to invest, e.g. prevent buddy punching with a finger print or Iris Scanner :-)

 

Guido

[Peter Forstmeier]

Hi,

thanks for the Response.

At the moment i Play with MQTT to send Messages from and to the Netduino, hopefully thiw will work.

What do you think about this idea?

 

Peter

[dino4net]

Hi,

 

If they are connected right to the Ethernet cable, I would use simple soap HttpWebRequest messages to send data to and from the server.

Overhead does not really matter in a normal Ethernet and soap is easy to test and implement.

Install IIS and SQL Server and you should be ready to go.

 

Witch MQTT library do you use?

 

Guido

[Peter Forstmeier]

Hi,

i'm not shure if i can send HttpWebRequest messages with mqtt.

 

At the moment i play with:

http://forums.netdui...e-data-from-n2/

 

Peter