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RPi as a node

A Former User 8 Dec 2016, 13:13 last edited by

I'm new to this!

Just wondering if I could use an RPi as a node and wire it using RS485?

I plan on using the Low Power labs "mightyhat" as my gateway, this will off load all the MySensors stuff on to the 'Atmel' on the hat. Allowing the RPi to do all the other things that it currently does.

I have another RPi set up as a for my garage door, which I want to integrate a video intercom in to. So the RPi will control the door, have a push button, which will be set up as a MySensors, and a camera and microphone + speaker that will use TCP. The video and MySensors will be sent via secure sockets to the first Pi, which will then re transmit the MySensors to the mighty hat via RS485.
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General Discussion • 23 Mar 2014, 21:38 • ToSa 1 Mar 2015, 11:21

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Hardware • 1 Feb 2020, 09:18 • hakha4 5 Dec 2023, 02:21

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I bought the Every because it implied it was backward compatible with the nano. No, it's not, as we found out. Be that as it may, any word on a getting the Every working with mySensors?
Does MySensors require Arduino Timer 2?
Hardware • mysensors interrupt nano interrupts esp • 6 Jan 2024, 19:39 • OldSurferDude 11 Jan 2024, 04:39

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I have success! (oops, that's suppose to be Timer1) I only sample for 1/60 of a second. What I did was to back up all the timer registered I used and then resorted them after I was done sampling. (As opposed to initializing the registers in setup and then starting the timer when needed.) Now I have a Nano sampling the data and sending it to a MySensors Gateway on an RPi3B+ which then sends it to an MQTT broker runing on an old laptop. Also running on the laptop is Home Assistant running inside of VirtualBox. If MySensors does use Timer1, it appears that restoring the registers allows it to be shared. //------------------------------------------------------ISR ISR(TIMER1_OVF_vect){ // interrupt service routine for overflow TCNT1 = TimerPreloadValue; // must be first line! starts the timer counting again digitalWrite(TRIGGER_START_SAMPLE_PIN,HIGH); samplesVolts[--sample]=analogRead(VOLTS_IN_PIN); // decrement before capturing samplesCurrent[sample]=analogRead(CURRENT_IN_PIN); digitalWrite(TRIGGER_START_SAMPLE_PIN,LOW); if (!sample){ // count down to zero digitalWrite(TRIGGER_START_SAMPLE_PERIOD_PIN,LOW); // indicate that sampling is complete samplingEnd = micros(); TCCR1B &= 248; // turns off timer } } //------------------------------------------------------sampleOneCycle void sampleOneCycle(){ // back up timer registers uint8_t TCNT1_b = TCNT1; uint8_t TCCR1B_b = TCCR1B; uint8_t TCCR1A_b = TCCR1A; uint8_t TIMSK1_b = TIMSK1; // configure timer which starts the sampling noInterrupts(); // disable all interrupts TCCR1A = 0; TCCR1B = 0; TCNT1 = TimerPreloadValue; // preload timer //TCCR1B |= (1 << CS10)|(1 << CS12); // 1024 prescaler TCCR1B &= 248; // turns off timer? TIMSK1 |= (1 << TOIE1); // enable timer overflow interrupt ISR // demark sampling sample = NUMBER_OF_SAMPLES; // count down to zero digitalWrite(TRIGGER_START_SAMPLE_PERIOD_PIN,HIGH); samplingStart = micros(); TCNT1 = 65535; // first trigger right away! TCCR1B |= 1; // turns on timer interrupts(); // enable all interrupts // wait for sampling to be complete while(digitalRead(TRIGGER_START_SAMPLE_PERIOD_PIN)){}; samplingEnd = micros(); // restore timer registers TCNT1 = TCNT1_b; TCCR1B = TCCR1B_b; TCCR1A = TCCR1A_b; TIMSK1 = TIMSK1_b; }
Sensors and more
Hardware • 19 Jun 2023, 00:41 • Robert Leverett 19 Jun 2023, 00:41

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Best time of year to buy higher quality small project solar panels?
Hardware • 10 Jun 2021, 19:19 • NeverDie 30 Aug 2024, 14:01

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30 Aug 2024, 14:01

It probably has to do with fewer people buying them once summer ends, so companies might lower prices to clear out stock before winter.
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Hardware • 24 Jan 2024, 23:06 • wrendral 3 Feb 2024, 07:13

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@wrendral said in "Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design": I will go with a Li-Po Battery type: 304048 3.7V 1200mAh Might work, but maybe the internal protection will trigger with the high current peaks. I'd suggest you plan a 0 Ohm, (2512/THT) resistor as R2 and then replace it with a 100Ohm/1Watt if the protection triggers.

RPi as a node

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RPi as a node

Suggested Topics

Over the air updates General Discussion • 23 Mar 2014, 21:38 • ToSa 1 Mar 2015, 11:21

Arduino Nano Every problem Hardware • 1 Feb 2020, 09:18 • hakha4 5 Dec 2023, 02:21

Does MySensors require Arduino Timer 2? Hardware • mysensors interrupt nano interrupts esp • 6 Jan 2024, 19:39 • OldSurferDude 11 Jan 2024, 04:39

Sensors and more Hardware • 19 Jun 2023, 00:41 • Robert Leverett 19 Jun 2023, 00:41

Best time of year to buy higher quality small project solar panels? Hardware • 10 Jun 2021, 19:19 • NeverDie 30 Aug 2024, 14:01

"Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design" Hardware • 24 Jan 2024, 23:06 • wrendral 3 Feb 2024, 07:13

2Online

11.5kUsers

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Over the air updates
General Discussion • 23 Mar 2014, 21:38 • ToSa 1 Mar 2015, 11:21

Arduino Nano Every problem
Hardware • 1 Feb 2020, 09:18 • hakha4 5 Dec 2023, 02:21

Does MySensors require Arduino Timer 2?
Hardware • mysensors interrupt nano interrupts esp • 6 Jan 2024, 19:39 • OldSurferDude 11 Jan 2024, 04:39

Sensors and more
Hardware • 19 Jun 2023, 00:41 • Robert Leverett 19 Jun 2023, 00:41

Best time of year to buy higher quality small project solar panels?
Hardware • 10 Jun 2021, 19:19 • NeverDie 30 Aug 2024, 14:01

"Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design"
Hardware • 24 Jan 2024, 23:06 • wrendral 3 Feb 2024, 07:13

2
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