Using the EDU05 as a GPIO board?

Edukits EDU05
1

I was recently playing around with my Raspberry Pi, and noticed an online tutorial about how to use the GPIO to print messages on a small LCD. I decided to use the LCD from the EDU05 and see if I could make it work, but failed miserably.

But this left me with the exposed EDU05, and it got me wondering if the 16 pins under the LCD could be turned into usable outputs. I know a few of the pins are ground, two are 5v power, and one is for the lcd brightness. But there are still 8 data/bus lines that could potentially be used for something interesting.

Anyone have any thoughts?

2

Here is the EDU05 circuit diagram.
Only 5 data lines are connected to the LCD connector.
They are outputs only.

800×362

3

[quote=“VEL255”]Only 5 data lines are connected to the LCD connector.
They are outputs only.[/quote]

Is it possible to control them directly? Right now if I send a text string your software converts it into a digital message for the LCD. Can I write to each of the pins individually, turning them high/low?

4

The LED outputs LD1, LD5…LD8 are connected to the LCD connector.
You can use the digital output functions to turn them high/low.

5

Can the LCD show data from he C# program ?
Greetings nice day

6

[quote]Can the LCD show data from he C# program ?[/quote]Yes, it can.
Here’s a snippet from the example software:LCDClear(); LCDWriteString(textBox1.Text,0);

The whole C# example is avilable here:
velleman.eu/downloads/files/ … ev1148.zip

7

That is exactly what we look for
what happens if the text is long as the LCD idth ?
Have Connector 2.0 the boatd use 3.0 connector
how is connection made ?
Greetings nice day sincerly sunny -

8

[quote]what happens if the text is long as the LCD idth ?[/quote]The first 16 characters are displayed.

[quote]Have Connector 2.0 the boatd use 3.0 connector
how is connection made ?[/quote]Can you please elaborate the question?

9

Our machine has USB cable 2.0 connectors the board has USB cable 3.0 connector or which name has the connector of EDU05 ?
How can connection be made ?
The machine is two years has not the fast USB 3.0
so the cable cant connect both device
Greetings thank you nice day
P.S.
is there possibility to make a product with a 4 wire serial connection because USB cable has limited length think 10 m
possibel to make a radio transmission so no wire is necesary
if USB cable is used instead of LCD the monitor could display the data
thats why the two above mentioned technology would improve the EDU05
Greetings to Luc and the rest of the team
sincerly thank happy

10

The EDU05 is using USB 1.1.
The USB cable supplied with EDU05 can be connected to the USB2.0 and USB 3.0 connectors of the PC.

Thank you for the suggestion to improve the EDU05.
At the moment there are no plans to make any changes to this product.

11

Thank found the cable can connect now thought that there was no cable suplied
connection works but no data can be transmitted with program Diag to the board
wrote Hallo!Ff submitted but only F was shown at position 9 : F
advice nice

12

[quote] no data can be transmitted with program Diag to the board
wrote Hallo!Ff submitted but only F was shown at position 9 : F[/quote]Strange problem.
I can’t reproduce the issue.
All the text “Hallo!Ff” is displayed on the LCD.