Thanks for the note, @Nca78 . It seems like my systems defaults to an ID of 255, though. I swapped out another Pro Mini and another radio (debugged the Arduino side using the RF24 library), and now I'm seeing more traffic between the Arduino and the RPi, though it seems to fall over at receiving an ID.

Note that I ran the ClearEpromConfig example immediately before pushing the MotionSensor example (no changes, did not define MY_NODE_ID).

Arduino:

0 MCO:BGN:INIT NODE,CP=RNNNA--,VER=2.1.1
4 TSM:INIT
4 TSF:WUR:MS=0
12 TSM:INIT:TSP OK
14 TSM:FPAR
16 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2025 !TSM:FPAR:NO REPLY
2027 TSM:FPAR
2029 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2037 TSF:MSG:READ,0-0-255,s=255,c=3,t=8,pt=1,l=1,sg=0:0
2043 TSF:MSG:FPAR OK,ID=0,D=1
4038 TSM:FPAR:OK
4038 TSM:ID
4040 TSM:ID:REQ
4044 TSF:MSG:SEND,255-255-0-0,s=255,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
6051 TSM:ID
6051 TSM:ID:REQ
6055 TSF:MSG:SEND,255-255-0-0,s=255,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
8065 TSM:ID
8065 TSM:ID:REQ
8069 TSF:MSG:SEND,255-255-0-0,s=255,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
10076 TSM:ID
10076 TSM:ID:REQ
10080 TSF:MSG:SEND,255-255-0-0,s=255,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
12089 !TSM:ID:FAIL
12091 TSM:FAIL:CNT=1
12093 TSM:FAIL:PDT
22097 TSM:FAIL:RE-INIT
22099 TSM:INIT
22106 TSM:INIT:TSP OK
22110 TSM:FPAR
22112 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
24121 !TSM:FPAR:NO REPLY
24123 TSM:FPAR
24125 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
26134 !TSM:FPAR:NO REPLY
26136 TSM:FPAR
26138 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
28147 !TSM:FPAR:NO REPLY
28149 TSM:FPAR
28151 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
30162 !TSM:FPAR:FAIL
30164 TSM:FAIL:CNT=2
30167 TSM:FAIL:PDT
40171 TSM:FAIL:RE-INIT
40173 TSM:INIT
40179 TSM:INIT:TSP OK
40183 TSM:FPAR
40185 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
42196 !TSM:FPAR:NO REPLY
42199 TSM:FPAR
42201 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
42209 TSF:MSG:READ,0-0-255,s=255,c=3,t=8,pt=1,l=1,sg=0:0
42215 TSF:MSG:FPAR OK,ID=0,D=1
44210 TSM:FPAR:OK
44212 TSM:ID
44212 TSM:ID:REQ
44216 TSF:MSG:SEND,255-255-0-0,s=255,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:

RPi:

pi@rpi:~/projects/RF24/rf24libs/RF24/examples_linux $ sudo mysgw -d
mysgw: Starting gateway...
mysgw: Protocol version - 2.1.1
mysgw: MCO:BGN:INIT GW,CP=RNNG---,VER=2.1.1
mysgw: TSF:LRT:OK
mysgw: TSM:INIT
mysgw: TSF:WUR:MS=0
mysgw: TSM:INIT:TSP OK
mysgw: TSM:INIT:GW MODE
mysgw: TSM:READY:ID=0,PAR=0,DIS=0
mysgw: MCO:REG:NOT NEEDED
mysgw: Listening for connections on 0.0.0.0:5003
mysgw: MCO:BGN:STP
mysgw: MCO:BGN:INIT OK,TSP=1
mysgw: New connection from 192.168.11.31
mysgw: Client 0 connected
mysgw: Client 0: 0;0;3;0;2;
mysgw: Client 0: 0;0;3;0;18;PING
mysgw: Client 0: 0;0;3;0;2;Get Version
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:PNG:SEND,TO=0
mysgw: TSF:CKU:OK
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,255-255-0,s=255,c=3,t=3,pt=0,l=0,sg=0:
mysgw: Client 0: 255;255;3;0;4;1
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:1
mysgw: Client 0: 0;0;3;0;18;PING
mysgw: TSF:MSG:READ,255-255-0,s=255,c=3,t=3,pt=0,l=0,sg=0:
mysgw: Client 0: 255;255;3;0;4;1
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=4,pt=0,l=1,sg=0,ft=0,st=OK:1
mysgw: Client 0: 0;0;3;0;18;PING
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:PNG:SEND,TO=0
mysgw: TSF:CKU:OK
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: Client 0: 0;0;3;0;18;PING
mysgw: Client 0: 0;0;3;0;18;PING
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:PNG:SEND,TO=0
mysgw: TSF:CKU:OK
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=255
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK

Am I missing a step? I am running "sudo mysgw -d" on the RPI, followed by "sudo service domocoticz.sh restart", then pushing the MotionSensor example to my Pro Mini.

Thanks again for everyone's help!

Hi everyone,

Thank you for your replies! I think @sundberg84 is probably right that there's something wrong with the radio attached to my Arduino. I did try adding a 10uF capacitor, changing the power source, as well as swapping out a different radio, but that didn't seem to help. I've ordered some MCP1702 voltage regulators that hopefully will improve things.

I did also try to directly specify the node ID, which is seen by my gateway, but it looks like the Arduino can't hear the gateway's response:

pi@rpi:~ $ sudo mysgw -d
mysgw: Starting gateway...
mysgw: Protocol version - 2.1.1
mysgw: MCO:BGN:INIT GW,CP=RNNG---,VER=2.1.1
mysgw: TSF:LRT:OK
mysgw: TSM:INIT
mysgw: TSF:WUR:MS=0
mysgw: TSM:INIT:TSP OK
mysgw: TSM:INIT:GW MODE
mysgw: TSM:READY:ID=0,PAR=0,DIS=0
mysgw: MCO:REG:NOT NEEDED
mysgw: Listening for connections on 0.0.0.0:5003
mysgw: MCO:BGN:STP
mysgw: MCO:BGN:INIT OK,TSP=1
mysgw: TSF:MSG:READ,128-128-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=128
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: !TSF:MSG:SEND,0-0-128-128,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=NACK:0
mysgw: TSF:MSG:READ,128-128-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=128
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: !TSF:MSG:SEND,0-0-128-128,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=NACK:0

The parser says the gateway isn't getting acknowledged:

TSF:MSG:SEND,0-0-128-128,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=NACK:0

Sent Message
Sender: 0
Last Node: 0
Next Node: 128
Destination: 128
Sensor Id: 255
Command: INTERNAL
Message Type:I_FIND_PARENT_RESPONSE
Payload Type: P_BYTE
Payload Length: 1
Signing: 0
Failed uplink counter: 0
Status: NACK (OK=success, NACK=no radio ACK received)
Payload: 0

Will keep testing and update if I get any joy!

Hi folks,

I'm just getting started and having a hard time getting my Arduino Pro Mini talking to my Raspberry pi running Domoticz. Both client and gateway are using the nRF24L01+ module.

I have a DHT22 sensor connected to the Arduino and can confirm that it's reading values correctly (using a DHT example). I'm now running the following code, adapted from the Air Humidity examples page:

/**
 * 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.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0: Henrik EKblad
 * Version 1.1 - 2016-07-20: Converted to MySensors v2.0 and added various improvements - Torben Woltjen (mozzbozz)
 * 
 * DESCRIPTION
 * This sketch provides an example of how to implement a humidity/temperature
 * sensor using a DHT11/DHT-22.
 *  
 * For more information, please visit:
 * http://www.mysensors.org/build/humidity
 * 
 */

// Enable debug prints
#define MY_DEBUG

#define MY_NODE_ID 255
#define MY_PARENT_NODE_ID 0
#define MY_PARENT_NODE_IS_STATIC

// Enable and select radio type attached 
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
//#define MY_RS485

//#define MY_RF24_PA_LEVEL RF24_PA_MAX
#define MY_RF24_PA_LEVEL RF24_PA_MAX
#define MY_RF24_DATARATE RF24_2MBPS
 
#include <SPI.h>
#include <MySensors.h>  
#include <DHT.h>

// Set this to the pin you connected the DHT's data pin to
#define DHT_DATA_PIN 3

// Set this offset if the sensor has a permanent small offset to the real temperatures
#define SENSOR_TEMP_OFFSET 0

// Sleep time between sensor updates (in milliseconds)
// Must be >1000ms for DHT22 and >2000ms for DHT11
static const uint64_t UPDATE_INTERVAL = 5000;

// Force sending an update of the temperature after n sensor reads, so a controller showing the
// timestamp of the last update doesn't show something like 3 hours in the unlikely case, that
// the value didn't change since;
// i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms]
static const uint8_t FORCE_UPDATE_N_READS = 10;

#define CHILD_ID_HUM 10
#define CHILD_ID_TEMP 11

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
DHT dht;


void presentation()  
{ 

  // Send the sketch version information to the gateway
  sendSketchInfo("TemperatureAndHumidity", "1.1");
  
  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
  
  metric = getControllerConfig().isMetric;
}


void setup()
{
  dht.setup(DHT_DATA_PIN); // set data pin of DHT sensor
  if (UPDATE_INTERVAL <= dht.getMinimumSamplingPeriod()) {
    Serial.println("Warning: UPDATE_INTERVAL is smaller than supported by the sensor!");
  }
  // Sleep for the time of the minimum sampling period to give the sensor time to power up
  // (otherwise, timeout errors might occure for the first reading)
  sleep(dht.getMinimumSamplingPeriod());
}


void loop()      
{  
  // Force reading sensor, so it works also after sleep()
  dht.readSensor(true);
  
  // Get temperature from DHT library
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed reading temperature from DHT!");
  } else if (temperature != lastTemp || nNoUpdatesTemp == FORCE_UPDATE_N_READS) {
    // Only send temperature if it changed since the last measurement or if we didn't send an update for n times
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    temperature += SENSOR_TEMP_OFFSET;

    send(msgTemp.set(temperature, 1));

    #ifdef MY_DEBUG
    Serial.print("T: ");
    Serial.println(temperature);
    #endif
  } else {
    // Increase no update counter if the temperature stayed the same
    nNoUpdatesTemp++;
  }

  // Get humidity from DHT library
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
    Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum || nNoUpdatesHum == FORCE_UPDATE_N_READS) {
    // Only send humidity if it changed since the last measurement or if we didn't send an update for n times
    lastHum = humidity;
    // Reset no updates counter
    nNoUpdatesHum = 0;
    send(msgHum.set(humidity, 1));
    
    #ifdef MY_DEBUG
    Serial.print("H: ");
    Serial.println(humidity);
    #endif
  } else {
    // Increase no update counter if the humidity stayed the same
    nNoUpdatesHum++;
  }


  
  // Sleep for a while to save energy
  sleep(UPDATE_INTERVAL); 
}

On the Arduino side, I seem to get stuck in a loop where the originating message doesn't get through to my gateway:

0 MCO:BGN:INIT NODE,CP=RNNNA---,VER=2.2.0-beta
49 TSM:INIT
51 TSF:WUR:MS=0
57 TSM:INIT:TSP OK
59 TSM:INIT:STATID=10
61 TSF:SID:OK,ID=10
63 TSM:FPAR
65 TSM:FPAR:STATP=0
67 TSM:ID
67 TSM:ID:OK
69 TSM:UPL
98 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=NACK:1
2107 TSM:UPL
2136 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=1,st=NACK:1
4145 TSM:UPL
4173 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=2,st=NACK:1
6184 TSM:UPL
6213 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=3,st=NACK:1
8222 !TSM:UPL:FAIL
8224 TSM:FPAR
8224 TSM:FPAR:STATP=0
8226 TSM:ID
8228 TSM:ID:OK
8230 TSM:UPL
8259 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=4,st=NACK:1
10268 TSM:UPL
10297 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=5,st=NACK:1
12306 TSM:UPL
12335 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=6,st=NACK:1
14344 TSM:UPL
14372 !TSF:MSG:SEND,10-10-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=7,st=NACK:1
16384 !TSM:UPL:FAIL

Something seems to be getting through to my RPi gateway, though, because Domoticz shows the following:

Any suggestions would be very welcome. I've tried adding a capacitor across the power supply as suggested, as well as changing the transmit power levels on the Arduino radio, to no avail.

Thanks in advance!