Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

Arduino 32U4 with built in RFM95 (LORA) on Aliexpress for $18

alowhum Plugin Developer 25 Sept 2018, 18:30 last edited by

Perhaps interesting for those that use lora?

https://www.aliexpress.com/item/Elecrow-Mega-32u4-with-Lora-RFM95-IOT-Board-868MHz-Wireless-Transport-Module-LoRaTM-Modem-DIY-Kit/32832220076.html

Looks like a pretty solid all in one basic MySensors node.
Reply Quote 0
1 Reply Last reply
Loading More Posts
2
Posts

1.3k
Views
Reply

Reply as topic
Log in to reply
alowhum Plugin Developer 25 Sept 2018, 18:39 last edited by

Also quite nice: a normal Arduino (not the mega) with Lora, but with a nice battery system built in.

https://www.aliexpress.com/item/LoRa-Radio-Node-v1-0-Based-on-Sx1278-LoRa-433Mhz-2-4G-RFM98-for-Arduino-ATmega328P/32855090628.html

Now if only they made an RFM69 version of that..
Reply Quote 0
1 Reply Last reply

2
Posts

1.3k
Views

Log in to reply

2 out of 2

Suggested Topics

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

87

1
Votes

87
Posts

50.4k
Views

1 Mar 2015, 11:21

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.
Sleep mode for bmp280
Hardware • 20 Feb 2018, 13:24 • fishermans 5 Feb 2024, 18:30

7

4
Votes

7
Posts

3.3k
Views

5 Feb 2024, 18:30

Just wanted to say thanks for this, it is still relevant and useful six years later !
Sensor to detect marijuana vape/smoke
Hardware • 21 Jan 2025, 06:36 • Hellmark 25 Feb 2025, 20:56

4

0
Votes

4
Posts

27
Views

25 Feb 2025, 20:56

There are air quality monitors that can detect VOCs (volatile organic compounds), and some that claim to pick up marijuana smoke specifically. Devices like the Airthings Wave Plus, uHoo Air Sensor, or Plume Labs Flow could help identify changes in air quality. Another option is checking with industrial-grade smoke detection companies that provide sensors for businesses and schools, and some of them may also have solutions suited for home use. If you want more information on vape-related products, including how they work and their components, check out Geek Bar Pulse X Platinum Edition. Understanding vape devices can help recognize patterns of use or detect scents earlier.
Newbie questions
Hardware • 14 Feb 2025, 20:03 • magwas 14 Feb 2025, 20:03

1

0
Votes

1
Posts

4
Views

No one has replied
Does MySensors require Arduino Timer 2?
Hardware • mysensors interrupt nano interrupts esp • 6 Jan 2024, 19:39 • OldSurferDude 11 Jan 2024, 04:39

2

0
Votes

2
Posts

22
Views

11 Jan 2024, 04:39

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

1

0
Votes

1
Posts

16
Views

No one has replied

0
Online

11.5k
Users

11.1k
Topics

112.8k
Posts

Copyright 2019 TBD | Forum Guidelines | Privacy Policy | Terms of Service

1 / 1