Hardware & firmware updates

            Latest firmware 5/3/2009  download

             Changes:  Lower current <5ma, Can add 4 wire display, delay before taking samples.

             

             

          Adding a display

   Adding a display you can see the data as it is logging only 1-2 ma more current.

 

Power on                        SD information              Display option 1           RAW a/d data

LM60 display 6 channel     Wind speed & direction need sensors

The PC software has new commands commands->display_options->select

this will set the logging display to one of the 3 above, if own custom display

wanted just contact.

 

Wiring connections.

The display will need 5V and ground for a 2x16 display 4 wire interface the signals are common connect

as below, only try if you have some electronics experience.

You can get the display from me just contact but most 2X15 charter displays will work

but some need a negative voltage for the contrast.

Display tested on

         Displaytech Ltd LCD MODULE 162D SERIES

 

     Pin NO. Symbol Level Description

     Display                                        SD logger

    1 DB7 H/L Data bit 7                 D3      

    2 DB6 H/L Data bit 6                 D2

    3 DB5 H/L Data bit 5                 D1

    4 DB4 H/L Data bit 4                 D0

    5 DB3 H/L Data bit 3                 Don't connect

    6 DB2 H/L Data bit 2                ""

    7 DB1 H/L Data bit 1                 ""

    8 DB0 H/L Data bit 0                "2

    9 E H, H ® L Chip enable signal             D5

    10 R/W H/L H : Read mode, L : Write mode             GND

    11 RS H/L H : Data signal, L : Instruction signal        D4

    12 VO --- Input voltage for LCD                 GND

    13 VSS 0V Ground                                        GND

    14 VDD 5.0V Supply voltage for logic       5V

    15 LED+ --- Backlight anode                      ?? if needed but takes 80ma need protection resistor  50 ohms 1/2 Watt

    16 LED- --- Backlight cathode