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💬 HVAC Recuperator control

openhardware.io last edited by

https://www.openhardware.io/view/8265/HVAC-Recuperator-control
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2 or more DHT11 - Sensors on one Arduino NANO MYSENSOR
Development • mysensors dht11 • • michlb1982

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@michlb1982 A couple of things, you put the device to sleep so while it's asleep, it won't respond to the commands to change the relays. Since you are combining relays and sensors, you need to keep the unit awake and find a different way to send the sensor data occasionally. For the relay status, read the comments in the sketch. You are saving the relay state and then reading that on startup. You can eliminate all of that code and just set the relay to off in the setup section. Cheers Al
💬 Radio Node
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Please add the documents required by the CERN license used.
💬 Mini Dimmer Box
OpenHardware.io • mysensors atsha204a ota dimmer power supply acdc rgb acs712 • • openhardware.io

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💬 NModule PIR sensor shield
OpenHardware.io • mysensors contest2017 pir nmodule am312 am612 • • openhardware.io

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@Nca78 FWIW, I used 1.55mm holes. There may be no perfect diameter since we don't even know for sure yet which lens will turn out best.
💬 MySensors Nrf24/RFM Serial/Ethernet GW Shield (for Uno)
OpenHardware.io • mysensors rfm69 nrf24l01+ • • openhardware.io

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Hello, i'm making some progress; received the components this week. Unfortunately it doesn't work... yet For now i have SanityCheck failure in to logs. I'm afraid my soldering of all these little components is not good. I tested with a multimeter the 4 pins and i have continuity on one of them but maybe not the others so i guess i will have to try remelting all these small regulators ???
Multisensor
OpenHardware.io • mysensors temperature mysensor motion dht22 rgb lux rfid buzzer • • openhardware.io

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@yoonie said: For the pro mini version, should i create another Openhardware project, or should i put it here, in the already existing project? Might be better to create a new project as they uses a different set of design files.
💬 Heatpump / airconditioner controller
OpenHardware.io • mysensors contest2016 infrared heatpump • • openhardware.io

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I recently build successfully a mysensor node based on an Arduino Uno, a Robolink IR sensor and a Robolink DHT11 sensor. The last two from an Elektor sensor kit ever bought for my son when he was still interested by electronics . My controller is Home Assistant, so I did a merge of the given MySensors example sketch and the Home Assistant example sketch together with the DHT11 sketch. The airco is a Samsung one, so in the sketch you will find these defines uncommented. Replace by your airco manufacturer. People interested in building one, can find my sketch on https://github.com/ericvb/MySensorsArduinoSketches @ToniA a big thanks for the work to decode all these IR sequences!
Why is the output of ACS712 current measurement module unchanged?
General Discussion • mysensors • • Tessie T

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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);

💬 HVAC Recuperator control

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💬 HVAC Recuperator control

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Why is the output of ACS712 current measurement module unchanged? General Discussion • mysensors • • Tessie T

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2 or more DHT11 - Sensors on one Arduino NANO MYSENSOR
Development • mysensors dht11 • • michlb1982

💬 Radio Node
OpenHardware.io • mysensors nrf24l01+ battery atmega328p tp4056 lipo • • openhardware.io

💬 Mini Dimmer Box
OpenHardware.io • mysensors atsha204a ota dimmer power supply acdc rgb acs712 • • openhardware.io

💬 NModule PIR sensor shield
OpenHardware.io • mysensors contest2017 pir nmodule am312 am612 • • openhardware.io

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💬 Heatpump / airconditioner controller
OpenHardware.io • mysensors contest2016 infrared heatpump • • openhardware.io

Why is the output of ACS712 current measurement module unchanged?
General Discussion • mysensors • • Tessie T

33
Online

11.6k
Users

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