9 replies to this topic

[nrc]

Hi All, I'm new in this forum and I would like to share with you my first experience with netduino. I have order netduino from an uk online shop and at the same time bought an 16x2 LCD ADM1602K. I've order also an I2C port expander to control the LCD, but at this time I didn't receive it yet. So I've decided to connect my new netduino the hard way spending for that 10 digital outputs. Here you have some pictures and the code. Soon I will put the schematic. Nuno Costa

Attached Files

•  P4110696.JPG   401.64KB   201 downloads
•  P4110698.JPG   444.19KB   201 downloads
•  LCD16x2.zip   45.78KB   73 downloads

[hanzibal]

Not bad for a 1st thing to do! What about the i2c expander board, Netduino got i2c onboard doesn't it?

[nrc]

The I2C port expander have arrived yesterday. I've bought the MCP23017 I2C 16-port I/O expander, but first I've improved my LCD class to enable a string direct reading. As soon I have the port expander connected I will update with the final code and the fritzing schematic.

[Michel Trahan]

Your code makes me think about some code I wrote some 25 years ago ... using punch cards ... tedious work I had written : Computing is easy ! Which was not then LOL

[hanzibal]

The I2C port expander have arrived yesterday. I've bought the MCP23017 I2C 16-port I/O expander, but first I've improved my LCD class to enable a string direct reading. As soon I have the port expander connected I will update with the final code and the fritzing schematic.

Netduino got i2c onboard doesn't it?

Still wondering about the i2c board...

[Michel Trahan]

Still wondering about the i2c board...

Will it eliminate the need for pullup resistors ?

[nrc]

Your code makes me think about some code I wrote some 25 years ago ... using punch cards ... tedious work I had written : Computing is easy ! Which was not then LOL

You are correct. This is tedious work. I've already changed my LCD class to read a string directly to the LCD avoiding what
I have donne with the test() function. I will deliver the code after connecting to the I2C expander.

[nrc]

Still wondering about the i2c board...

Netduino has the I2C ability, yes. After connecting to the expander I will give some details.

[nrc]

Will it eliminate the need for pullup resistors ?

Do you mean the I2C pullup resistors? Thouse are always needed.

[CableGuy]

Any updates?