What radio to use? NRF24L01+, RFM69, RFM73 ?

NeverDie

I would wonder whether running some signals through the level shifter and some not might cause the signals to arrive out of phase? Anyway, something to consider if you can't get it to work.

Cliff Karlsson

Ok, this is my temp sensor sketch. Does it also look Ok?

/**
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 *******************************
 *
 * DESCRIPTION
 *
 * Example sketch showing how to send in DS1820B OneWire temperature readings back to the controller
 * http://www.mysensors.org/build/temp
 */

#include <MySensor.h>  
#include <SPI.h>
#include <DallasTemperature.h>
#include <OneWire.h>
#include <MyTransportRFM69.h>
#define COMPARE_TEMP 1 // Send temperature only if changed? 1 = Yes 0 = No

#define ONE_WIRE_BUS 3 // Pin where dallase sensor is connected 
#define MAX_ATTACHED_DS18B20 16
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass the oneWire reference to Dallas Temperature. 
MyTransportRFM69 transport; 
MySensor gw(transport);
float lastTemperature[MAX_ATTACHED_DS18B20];
int numSensors=0;
boolean receivedConfig = false;
boolean metric = true; 
// Initialize temperature message
MyMessage msg(0,V_TEMP);
void setup()  
{ 
  // Startup up the OneWire library
  sensors.begin();
  // requestTemperatures() will not block current thread
  sensors.setWaitForConversion(false);

  // Startup and initialize MySensors library. Set callback for incoming messages. 
  gw.begin();

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Temperature Sensor", "1.1");

  // Fetch the number of attached temperature sensors  
  numSensors = sensors.getDeviceCount();

  // Present all sensors to controller
  for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {   
     gw.present(i, S_TEMP);
  }
}


void loop()     
{     
  // Process incoming messages (like config from server)
  gw.process(); 

  // Fetch temperatures from Dallas sensors
  sensors.requestTemperatures();

  // query conversion time and sleep until conversion completed
  int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
  // sleep() call can be replaced by wait() call if node need to process incoming messages (or if node is repeater)
  gw.sleep(conversionTime);

  // Read temperatures and send them to controller 
  for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {
 
    // Fetch and round temperature to one decimal
    float temperature = static_cast<float>(static_cast<int>((gw.getConfig().isMetric?sensors.getTempCByIndex(i):sensors.getTempFByIndex(i)) * 10.)) / 10.;
 
    // Only send data if temperature has changed and no error
    #if COMPARE_TEMP == 1
    if (lastTemperature[i] != temperature && temperature != -127.00 && temperature != 85.00) {
    #else
    if (temperature != -127.00 && temperature != 85.00) {
    #endif
 
      // Send in the new temperature
      gw.send(msg.setSensor(i).set(temperature,1));
      // Save new temperatures for next compare
      lastTemperature[i]=temperature;
    }
  }
  gw.sleep(SLEEP_TIME);
}```

TD22057

Well I'm having problems too... :anguished: I'm running basically the same serial gateway code you are and, like you, it starts up fine. For my sensor, I'm using the MockSensor sketch modified to send a counter. That starts up fine as well but can't communicate with the gateway. I tried level shifting IRQ and not level shifting IRQ - no change. Basically the gateway never gets the transmitted message. I'm using a small helical antenna that came w/ the radio on the sensor and a home made dipole on the gateway. I'm going to try and replace my home made antenna with a helical model on the gateway and see what happens.

Here's what I see on the sensor:

find parent
send: 254-254-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,st=bc:

I'm using this level shifter. If my antenna mod doesn't work (I'm not expecting it to), I'll try changing this to a resistor network to do the shifting and see if that helps.

Cliff Karlsson

Hmm...

I just connected both gateway and temp sensor to the same computer and used the serial monitor and now it shows temp info

0;0;3;0;9;gateway started, id=0, parent=0, distance=0
0;0;3;0;14;Gateway startup complete.
0;0;3;0;9;read: 1-1-0 s=255,c=0,t=17,pt=0,l=3,sg=0:1.5
1;255;0;0;17;1.5
0;0;3;0;9;read: 1-1-0 s=255,c=3,t=6,pt=1,l=1,sg=0:0
1;255;3;0;6;0
0;0;3;0;9;read: 1-1-0 s=255,c=3,t=11,pt=0,l=18,sg=0:Temperature Senso
1;255;3;0;11;Temperature Sensor
0;0;3;0;9;read: 1-1-0 s=255,c=3,t=12,pt=0,l=3,sg=0:1.1
1;255;3;0;12;1.1
0;0;3;0;9;read: 1-1-0 s=0,c=0,t=6,pt=0,l=0,sg=0:
1;0;0;0;6;
0;0;3;0;9;read: 1-1-0 s=0,c=1,t=0,pt=7,l=5,sg=0:24.5
1;0;1;0;0;24.5
0;0;3;0;9;read: 1-1-0 s=0,c=1,t=0,pt=7,l=5,sg=0:24.7
1;0;1;0;0;24.7
0;0;3;0;9;read: 1-1-0 s=0,c=1,t=0,pt=7,l=5,sg=0:24.8
1;0;1;0;0;24.8

I don´t know if it is a range problem or if it is my controller platform.
I am using a raspberry pi and domoticz and I get a lot of errors like:

2015-09-28 19:30:16.415 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:30:17.881 MySensors: Gateway Ready...
2015-09-28 19:30:36.661 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:31:06.795 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:31:36.930 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:32:07.060 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:32:37.168 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:33:07.298 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:33:37.410 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:34:07.541 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:34:37.658 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:35:07.784 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:35:37.925 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:36:08.054 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:36:38.167 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:37:08.298 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:37:38.428 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:38:08.537 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:38:38.666 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:38:38.852 Error: Serial Port closed!... Error: End of file
2015-09-28 19:38:39.513 MySensors: retrying in 30 seconds...
2015-09-28 19:39:08.518 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:39:08.518 Error: MySensors: Error opening serial port!
2015-09-28 19:39:08.799 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:39:09.518 MySensors: retrying in 30 seconds...
2015-09-28 19:39:38.523 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:39:38.523 Error: MySensors: Error opening serial port!
2015-09-28 19:39:38.898 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:39:39.523 MySensors: retrying in 30 seconds...
2015-09-28 19:40:08.528 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:40:08.528 Error: MySensors: Error opening serial port!
2015-09-28 19:40:09.013 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:40:09.529 MySensors: retrying in 30 seconds...
2015-09-28 19:40:38.533 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:40:38.534 Error: MySensors: Error opening serial port!
2015-09-28 19:40:39.107 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:40:39.534 MySensors: retrying in 30 seconds...
2015-09-28 19:41:08.538 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:41:08.539 Error: MySensors: Error opening serial port!
2015-09-28 19:41:09.222 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:41:09.539 MySensors: retrying in 30 seconds...
2015-09-28 19:41:38.543 MySensors: Using serial port: /dev/ttyUSB0
2015-09-28 19:41:38.544 Error: MySensors: Error opening serial port!
2015-09-28 19:41:39.335 Hardware Monitor: Fetching data (System sensors)
2015-09-28 19:41:39.544 MySensors: retrying in 30 seconds...

I have tried using two different raspberry pi´s and tried both the stable and the beta of domoticz and I get the same errors everytime.
I was thinking there was some error in the gateway-sketch/temp-sketch or that the usb-port of the pi could not provide enough power for the nano+RFM69W.

fets

@Cliff-Karlsson glad it works now.
You should now try to use a different power source for node and see if it's stil working. Next start to move your node.
Regarding domoticz outputs, these are not errors but' just logs from raspberry motherboard sensors.

TD22057

Well - the good news is that mine is working now. The ??? news is that I'm not sure why. I was using an Uno as my gateway (w/ a dipole antenna) and a 5V mini (small helical antenna) as the sensor and couldn't get anything to go between them. To simply things, I changed the Uno to a 3V mini w/ a monopole antenna and got some traffic, but not very consistent. So I shut everything down, ate some dinner, watched some TV and came back to it. Turned both nodes on and everything was working fine. I rigged up a battery and booster to the 5V mini and started moving it around the house and it's working perfectly. Basically there doesn't seem to be anywhere on my property that I can't get a signal.

The 5V mini is using a level shifter on all the lines (including IRQ) except MISO so I'll try removing the IRQ shifting next to make sure it works without that. And I need to see if I can get the Uno working as the gateway.

My best guess is that I had a loose connection in the breadboard (i.e. maybe I should stop buying cheap breadboards). Or maybe start using wire wrap for my prototypes.

NeverDie

@TD22057 said:

I rigged up a battery and booster to the 5V mini and started moving it around the house and it's working perfectly. Basically there doesn't seem to be anywhere on my property that I can't get a signal.

Great!

shabba

So does the RFMxx need level shifters? I was under impression they were like that NRF24LO1+ and could just be wired direct to the minis.

fets

@shabba levels shifters needed, unless with pro mini 3.3v

Cliff Karlsson

Hi I had my RFM69(H)W Gateway and sensors working after several days of trial and error. A couple of days ago I started fiddeling around with the gateways when trying to add a NRF radio. The nrf works great but now my RFM69 has stopped working.

Can anyone write down a complete step by step instruction of how to get the Serial gateway and sensors working using the RFM69.

This is what I have done:

MyConfig.h - Checked that the right radio options was selected.

Mysensor.h - Added

#include "MyTransportRFM69.h"

//MySensor(MyTransport &radio =*new MyTransportNRF24(), MyHw &hw=*new MyHwDriver()
MySensor(MyTransport &radio =*new MyTransportRFM69(), MyHw &hw=*new MyHwDriver()

SerialGateway:
added:
"MyTransportRFM69 transport (RFM69_FREQUENCY, RFM69_NETWORKID, RF69_SPI_CS, RF69_IRQ_PIN, true, RF69_IRQ_NUM) ;" (I have the H version on the gateway)

Are there any more steps? anything more I need to add to the SerialGateway Sketch?
The Sensor-sketches also seems to have been modified recently, how do I add the Radio info in the sketches?

shabba

Did anyone manage to get direct raspberry pi to RFM69 working? About to roll out a rfm69 network beside my nrf24 one.

mahesh2000

hi, is there something like the nRF24LE1 (which has an nRF24L01 and 8051 microprocessor in one chip) in the RFM family? thanks!

mfalkvidd

@mahesh2000 please don't post the same question in multiple places. It wastes people's time when some details are available in one thread and some details in another thread.
To anyone responding to @mahesh2000's question, please reply in https://forum.mysensors.org/post/85838 instead.

What radio to use? NRF24L01+, RFM69, RFM73 ?

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