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What is the Netduino Mini?


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#21 Charles

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Posted 07 November 2010 - 08:00 PM

Netduino Mini offers networking support via SPI.

I wish we could have built a 64- or 128-pin DIP chip and exposed everything :)

Chris


Of course...

Any chance a Netduino Mini Plus is on the way? An extra 4 pins for the ethernet data lines and an extra quarter-inch or so of board length for the MII chip?

What do you mean via SPI? I'm talking about Ethernet networking.

#22 Chris Walker

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Posted 07 November 2010 - 08:52 PM

What do you mean via SPI? I'm talking about Ethernet networking.


Charles,

You can add Ethernet TCP/IP networking support to the Netduino Mini using a SPI-based networking module. We'll have more info on this soon.

Chris

#23 Charles

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Posted 17 November 2010 - 06:07 PM

Charles,

You can add Ethernet TCP/IP networking support to the Netduino Mini using a SPI-based networking module. We'll have more info on this soon.

Chris


Any more info on this??

#24 phantomtypist

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Posted 17 November 2010 - 06:32 PM

Any more info on this??


I believe the SPI pins Chris is referring to on the Netduino are pins 14, 15, 16 and any other data pin. The SPI bus requires a chip select pin for each device attached to the SPI bus.

The Wiznet W5100 ethernet module uses the SPI bus to communicate with the microcontroller.

Charles, did you specifically want a schematic showing how to connect an ethernet module to the Netduino Mini?

#25 Charles

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Posted 17 November 2010 - 06:56 PM

I believe the SPI pins Chris is referring to on the Netduino are pins 14, 15, 16 and any other data pin. The SPI bus requires a chip select pin for each device attached to the SPI bus.

The Wiznet W5100 ethernet module uses the SPI bus to communicate with the microcontroller.

Charles, did you specifically want a schematic showing how to connect an ethernet module to the Netduino Mini?


I am aware of Wiznet's capabilities, and maybe I am reading too much into this, but I got the impression from Chris's statement that they had something specific in mind for use with the Mini.

Given that the unit isn't available in the states yet I'm just planning and thinking about it all more than anything.

#26 Chris Walker

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Posted 17 November 2010 - 09:21 PM

Any more info on this??


Stay tuned... We'll be sharing more soon... [Hint: community member Pascal has been cooking up something really cool.]

Chris

#27 teachop

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Posted 14 December 2010 - 04:51 PM

Just ordered one to gift myself on the 25th! Looking over the schematic... If you ever plan to tweak the PCB at all, would you consider using a lower drop regulator (300mV) instead of U5? That would help in a stand-alone project designed to operate off a single Li-Ion or LiPo cell.

#28 Chris Walker

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Posted 14 December 2010 - 06:46 PM

Hi teachop,

Just ordered one to gift myself on the 25th! Looking over the schematic... If you ever plan to tweak the PCB at all, would you consider using a lower drop regulator (300mV) instead of U5? That would help in a stand-alone project designed to operate off a single Li-Ion or LiPo cell.


Any particular power regulators you'd like us to investigate? Perhaps the Netduino Mini needs a special-order brother in the future...

Merry Christmas :)

Chris

#29 teachop

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Posted 15 December 2010 - 12:59 PM

Any particular power regulators you'd like us to investigate?

Not that I know of in the price range of the MC33269. The LT1965 is great, but too expensive! LP3871 instead of U5 would work in both applications, might be < $1, and is very LDO. Merry Christmas to you and yours too.

#30 mhelin

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Posted 04 February 2011 - 01:52 PM

Would it be possible to re-route the PCB so that instead of connecting the SPI0 pins PA12, PA16, PA17 and PA18 to headers the SPI1 pins PA21, PA22, PA23 and PA24 were used? That way also audio DAC's could be interfaced using the SSC (which also doubles as SPI interface).

#31 Chris Walker

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Posted 04 February 2011 - 07:20 PM

Hi mhelin, We wanted to keep the Netduino Mini electrically compatible with the regular Netduinos, so it exposes the same SPI channel. That said: 1. We'll definitely consider this with new designs. 2. Netduino Mini is open source hardware, so you're welcome to build your own board. Chris




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