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Scan Interface Applications - Five Members Win A Target Board And An MSP-FET

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Got my MSP-FET today. QC, doesn't seem ideal. My unit's red led was squashed into the case instead of protruding through.

 

However it still works perfectly, so no complaints.

 

Loving the new EnergyTrace so far (I havent got to play with it on my wolverine board yet).

 

A nice feature of these MSP-FET's is ability to adjust target voltage. and combined with energyTrace you can instantly see an improvement. I was able to halve the enegry consumption of my code just by reducing the voltage to 2v.

Very interesting stuff. Might have to design a dual voltage PSU into my next board. (adjustable with a FET + extra resistor feedback, tied to MCU pin?)

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I know that my ESI project stalled over the Christmas break and I must admit I was struggling with it before that. I notice that nobody else seems to have any updates recently. I feel an update is probably due even if it's just this:

 

My impression is that the FR6989 is an awesome chip (especially EnergyTrace++) but that the ESI is a rather... er... how shall I put it... niche interest peripheral. It takes a lot of effort to get the best from it and it's difficult to stretch it beyond the exact use cases already documented by TI. Has everyone else come to a similar conclusion?

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I'm getting a similar feeling. But I thought that was the point of this competition. TI obviously created the original scan IF (found some much older MSP430's) for metering applications. Of which there is a large market, however very few applications.

 

I've been sketching out ideas on paper about how I am incorporating the ESI into my project. Currently it looks to be less effort to make use of more common modules on the device.

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I quite understand we were expected to put some effort into making use of and demonstrating this underused and unappreciated peripheral. And that often it's quicker and easier to drop back to things you're more familiar with.

 

However, my use case is only slightly off the beaten track (flow measurement with a pulse per revolution rather than quadrature) and I'm already looking at more complicated code that uses more power and has more problems. All downsides with no upsides. I hope to get back to it and find something positive but I'm struggling to so far.

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Sounds like the perfect "thing" to use in a small wind turbine ( DIY ), for monitoring RPM. Some DIY turbine use a multiple coil setup to achieve maximum power generation for different wind speed ranges. Delta and star configurations if memory serves me correctly. The important factor here being keeping the turbine loaded correctly. In a certain wind speed range. To generate power at it's maximum power point - Known also as MPPT by some, but is much different for wind turbines than is for solar power. Mostly related to the mechanical factor. Well electrical too. Since if you push too much power through a coil . . . You're definitely going to be seeing blue smoke.

 

Anyway, passed that, this could be used to help "steer" the turbine out of the wind slightly through a motorized tail perhaps. Or in extreme winds ( that tend to destroy wind turbines ), gradually short ground to vout until the turbine comes to a complete halt. EDIT: should add this is done manually by many DIY turbine builders using a double pole single throw switch usually, To disconnect the target storage medium at the same time.

 

No need for batteries though, DIY turbines can, in the right area generate a lot of power. Have seen a few that can generate upwards of 3-4kW. With 14' long wooden blades.

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The FR6989 LaunchPad is available if you want to try. ;)

hehe, thanks, although I'm not much interested in DIY turbines any more. We've since acquired two AirX 400W turbines that self regulate RPMs.  That, and compared to the solar array. They hardly help charge the battery banks . . .

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