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advise to buy a noob PCB

Danielo Rodríguez last edited by

Hello.
I want to build a battery powered presence sensor. It should have a PIR sensor (not sure if mandatory or just recommended) and a distance sensor (that I have a bunch of). It is exactly like this project:
https://forum.mysensors.org/topic/3629/robotic-lawn-mower-supervisor?_=1634468560128

However that project doesn't have much details and I am a noob (and I always be because I have no time with all my other hobbies).
Ideally I want to use the same noob board for some other sensors too because I think buyin 10 or 20 is the most budget friendly solution. Being as small as possible is a nice have but I'm willing to sacrifice it a bit for convenience. Also the more budget friendly the better

Which noob PCB is more recommended for my situation? I'll buy them through openhardware to support this awesome project.
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General Discussion • • ToSa

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I would really like to get OTA working here as it's freezing outside and I have to go there to update the software in the greenhouse control system. So please, can we have a 'how to' step-by-step guide to OTA? Please? S.
Does MySensors require Arduino Timer 2?
Hardware • mysensors interrupt nano interrupts esp • • OldSurferDude

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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; }
hlk-pm01 are to noisy for rfm69?
Hardware • • Tmaster

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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...
Sensors and more
Hardware • • Robert Leverett

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New user has questions
Hardware • • Doggie

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I am new in this forum and I have a question regarding mysensors and iobroker. I did not work with mysensors up to now. Since some weeks I use iobroker installed on a raspberrypi. Now I want to integrate my 433 Mhz doorbell in iobroker. I know, that there is an adapter for mysensors in iobroker. My question is: Is it possible to get a notification in iobroker if someone is pressing the button on my doorbell? As I understood, I have to connect the receiver to an arduino nano and connect the arduino to my rasberrypi on which iobroker is running.
"Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design"
Hardware • • wrendral

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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.

advise to buy a noob PCB

Suggested Topics

Over the air updates
General Discussion • • ToSa

Does MySensors require Arduino Timer 2?
Hardware • mysensors interrupt nano interrupts esp • • OldSurferDude

hlk-pm01 are to noisy for rfm69?
Hardware • • Tmaster

Sensors and more
Hardware • • Robert Leverett

New user has questions
Hardware • • Doggie

"Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design"
Hardware • • wrendral

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advise to buy a noob PCB

Suggested Topics

Over the air updates General Discussion • • ToSa

Does MySensors require Arduino Timer 2? Hardware • mysensors interrupt nano interrupts esp • • OldSurferDude

hlk-pm01 are to noisy for rfm69? Hardware • • Tmaster

Sensors and more Hardware • • Robert Leverett

New user has questions Hardware • • Doggie

"Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design" Hardware • • wrendral

0Online

11.4kUsers

11.1kTopics

112.6kPosts

Over the air updates
General Discussion • • ToSa

Does MySensors require Arduino Timer 2?
Hardware • mysensors interrupt nano interrupts esp • • OldSurferDude

hlk-pm01 are to noisy for rfm69?
Hardware • • Tmaster

Sensors and more
Hardware • • Robert Leverett

New user has questions
Hardware • • Doggie

"Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design"
Hardware • • wrendral

0
Online

11.4k
Users

11.1k
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112.6k
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