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Using wifi on a pi

midihipi 6 Oct 2016, 09:59 last edited by midihipi 6 Oct 2016, 10:01

Good Day,
I am sure this has been done before but I wonder if anyone can guide me in a tutorial on how to use the built in wifi in my pi with a DIY Arduino nano and a wifi chip like an 8266 with a relay to turn on and off a socket. This will be my first project but I am lost as to whether i'll need voltage regulators or caps etc. I am sure I am in the wrong forum area etc. This is my first go at trying to figure this out. I love the site!
TIA
Brad
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General Discussion • 23 Mar 2014, 21:38 • ToSa 1 Mar 2015, 11:21

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

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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?
hlk-pm01 are to noisy for rfm69?
Hardware • 5 Aug 2023, 21:16 • Tmaster 9 Aug 2023, 16:28

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@Tmaster Never assume the original PCB was just a circuit of components, the PCB can incorporate RF shields and antenna radio ground planes...
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; }

Using wifi on a pi

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Using wifi on a pi

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

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

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

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

hlk-pm01 are to noisy for rfm69? Hardware • 5 Aug 2023, 21:16 • Tmaster 9 Aug 2023, 16:28

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

0Online

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

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

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

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

hlk-pm01 are to noisy for rfm69?
Hardware • 5 Aug 2023, 21:16 • Tmaster 9 Aug 2023, 16:28

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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