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August 15, 2011
News - The Edison is Not a Raspb…
A more direct comparison is to the RasPi Compute Module: http://www.raspberrypi.org/raspberry-pi-compute-module-new-product/. I believe the Edison is more powerful, smaller, and similarly priced.
Nice post, and exactly what I’ve been trying to convey to those comparing it to the RasPi. I think the difference is if one comes from the embedded side and sees this as a much more powerful embedded SoM, rather than those coming from the desktop side, and trying to envision this as a small SBC. Obviously it doesn’t compare well as a small, cheap SBC.
“They are all cheap, single board computers that run Linux, so I can program them in whatever language I can find a compiler for (or interpreted languages too). They also all offer GPIO capabilities, so I can control real world objects with them.”
The Edison is not a single board computer. It’s a SoM that is not intended to be stand alone. It’s intended to be integrated into another system, and it’s one of the smallest and cheapest Linux based SoMs on the market. Try to find one that’s as small and as cheap.
Sure you can make it like a SBC by adding one of the breakout boards, but if all you want is an SBC, the RasPi or BBB is much cheaper.
I understand the difference between the mbed boards and Linux SBCs, but the following post was looking for: “a wireless GPIO block that could make use of the Bluetooth.” The nRF51822 works very well for that.
Why does everyone want to compare this to the RasPi? If you all you want is an x86 version of the RasPi, why do you care what the CPU architecture is, just buy a RasPi. This is more comparable to the RasPi compute module, which is supposed to be similarly priced and less powerful. It’s designed for embedded applications, not desktop applications.
As for a wireless GPIO block, take a look at the nRF51822 mbed board (or other similar boards). It has BTLE and plenty of GPIOs, UARTS, etc. It even includes a battery holder so that it can run completely without wires.
Since most of your Edison Blocks have components under the Edison board, I have to assume you are using the 3.0mm connector on the blocks. Is that correct? If so, do you plan on stocking those (soon)? I don’t see those in stock anywhere, and with the 2.0mm connector it only leaves 0.5mm between the board and the Edison shield, which is not enough space to fit much of anything.
Does the Edison require pull-up resistors on the I2C, or are those already on the board. If the Edison doesn’t add the pull-up resistors, does this board have the resistors?
about 4 years ago
I’m trying to figure out page 5 of the datasheet. Are the resisters that it’s talking about on the shield, or should they be installed externally. My reading of it is that they are on the shield (the default configuration), which would fix pins 13, 15, and 18 to GPIO. Does that sound correct?
I also don’t understand the values for R8,11,17,20 (0R?).
Edit: Looking at the picture, which I can see better than the device itself ;-) It looks like the resisters are on the back of the shield. I would have to de-solder one of the 0 (0 ohms?) resisters on the back to add an additional sensor input. I’m assuming these resisters are intended to make the sensor inputs 3.3V compatible, whereas the reference manual states a 1.2V max.
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