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Possible Issues with this shield....?


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#1 Omar (OZ)

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Posted 11 September 2010 - 06:45 PM

What Compatibility issues would I be facing if I were to get something like this: 4-Digit LED Shield

Thanks

#2 Chris Walker

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Posted 11 September 2010 - 07:31 PM

Hey Oz, Nice find! It uses I2C, and Netduino has support for that built-in. We'd just need to build a driver--unless there's some other electrical requirement I'm not seeing. I also just wrote the manufacturer to see what we can do about creating a C# driver for it... Chris

#3 greg

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Posted 11 September 2010 - 07:43 PM

Hey Oz,

Nice find! It uses I2C, and Netduino has support for that built-in. We'd just need to build a driver--unless there's some other electrical requirement I'm not seeing.

I also just wrote the manufacturer to see what we can do about creating a C# driver for it...

Chris


This makes me nervous:

400kbps 2-Wire Interface Compatible with I2C 2.7V to 5.5V operation


Any time I see that I get concerned. For example the SHT15 is 2-wire but I2C compatible -- but it's not I2C. You have to play with it a bit. I didn't dig into the specs at all but just something to keep an eye on.

#4 segu

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Posted 12 September 2010 - 12:31 AM

It is I2C ... from the datasheet

Slave Address
The MAX6953 has a 7-bit-long slave address (Figure
6). The eighth bit following the 7-bit slave address is
the R/W bit
. It is low for a write command, high for a
read command.
The first 3 bits (MSBs) of the MAX6953 slave address
are always 101. Slave address bits A3, A2, A1, and A0
are selected by the address input pins AD1 and AD0.
These two input pins may be connected to GND, V+,
SDA, or SCL. The MAX6953 has 16 possible slave
addresses (Table 3) and therefore a maximum of 16
MAX6953 devices may share the same interface.


To me it is classical I2C
We need a "thumbs up" emoticon (urgently :huh: ) :) :)

#5 Omar (OZ)

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Posted 12 September 2010 - 02:08 AM

Hey Oz,

Nice find! It uses I2C, and Netduino has support for that built-in. We'd just need to build a driver--unless there's some other electrical requirement I'm not seeing.

I also just wrote the manufacturer to see what we can do about creating a C# driver for it...

Chris


So basically its not something I should jump into at this point right? I'd be great to use but it looks to advanced for me :( Maybe a bit later.

#6 Chris Walker

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Posted 25 September 2010 - 02:51 AM

We got this shield in. It works great. In about 5 (maybe 10) minutes we had ported their sample code (typed in from the included piece of paper) to C# and were printing "SheildStudio.com" on the display :) And oh, you'll have to check it out at MakerFaire NY. We're using it with the Netduino Plus... And since the Ethernet jack is low-profile and hard plastic, there's no issue with the pins on the bottom of the shield. I've asked permission to post the port of their code here. I'll post it as soon as (and if) I get that permission... Chris

#7 Omar (OZ)

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Posted 25 September 2010 - 03:10 AM

We got this shield in. It works great. In about 5 (maybe 10) minutes we had ported their sample code (typed in from the included piece of paper) to C# and were printing "SheildStudio.com" on the display :)

And oh, you'll have to check it out at MakerFaire NY. We're using it with the Netduino Plus... And since the Ethernet jack is low-profile and hard plastic, there's no issue with the pins on the bottom of the shield.

I've asked permission to post the port of their code here. I'll post it as soon as (and if) I get that permission...

Chris


Thats great! I've sidetracked to a new project though. :mellow:




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