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MySensors Port to MSP430 / Energia

openhardware.io 25 Mar 2016, 08:16 last edited by openhardware.io 25 Mar 2016, 08:27

https://www.openhardware.io/view/59/MySensors-Port-to-MSP430-Energia
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mysensors 189 contest2016 19 msp430 1 energia 1
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pcs 25 Mar 2016, 08:36 last edited by pcs 25 Mar 2016, 08:36

discussed in older thread
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@openhardware-io That looks great! - Perhaps they could make a version for the UK market called "regnsyn" ??? ;0
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@vikasjee Alex used the hardware described at the start of this thread. You will find all design documents on Openhardware.io
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@ZenBlizzard in case you are measuring the output with a multimeter, you will get an averaged level, since AC current waveform should be sinusoidal and overlapped with the Vcc/2->2.56V in your case. To measure the current you need a decently high sampling and some math. #define SENSITIVITY 66 // mV/A const float readings = 5; const float alpha = 2.0 / (2 * readings + 1); for (ifor = 0; ifor < 250; ifor++) { // Voltage voltageSampleRead = analogRead(V) * vccRead / 1023 - vccRead / 2; /* read the sample value including offset value*/ voltageSampleSum = voltageSampleSum + sq(voltageSampleRead); /* accumulate total analog values for each sample readings*/ voltageSampleOffsetSum = voltageSampleOffsetSum + voltageSampleRead; // Current currentSampleRead = analogRead(I) * vccRead / 1023 - vccRead / 2; /* read the sample value including offset value*/ currentSampleSum = currentSampleSum + currentSampleRead * currentSampleRead; /* accumulate total analog values for each sample readings*/ currentSampleOffsetSum = currentSampleOffsetSum + currentSampleRead; wait(1); } voltageMean = voltageSampleSum / ifor; /* calculate average value of all sample readings taken*/ voltageOffset = voltageSampleOffsetSum / ifor; reading = (sqrt(voltageMean) - voltageOffset) * 230.0 / 1.0; // read voltage / reported voltage. voltage = round_to_dp(alpha * reading + (1 - alpha) * voltage,1); Serial.println(voltage); if (voltage < 25) voltage = 0; currentMean = currentSampleSum / ifor; /* calculate average value of all sample readings taken*/ currentOffset = currentSampleOffsetSum / ifor; reading = (sqrt(currentMean) - currentOffset) / SENSITIVITY * 1000 - currentZeroOffset; // subtract no load current. if (reading < 0) reading = 0; current = round_to_dp( alpha * reading + (1 - alpha) * current,2);
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Hello Berk, Is it possible for you to share your schematic for this project please? especially the power part?
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Wow, great! Its alway nice to see others using my work too. Your code improvement seem to be very helpful too. I have most recently also integrated this directly into my gateway build (see here). I am still struggling with code there though.

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