changed the MyConfig.h to lower power, but now getting an out of sync error from avrdude when I try to upload sketch, which appears to mean I need to reflash the bootloader from what I have been able to find. I'll update you on sig strength result when that's done.

Should have mentioned that. Running NRF24's, both with capacitors, both being powered off a USB hub hooked to my laptop.

Setting up my first sensor (motion sensor) on a serial gateway connected to a RPi running Domoticz. Sensor is running on a Geuine Uno r3, GW is running on a Nano. Domoticz recognizes the gateway and is visible in Log. Looks like mybe they are talking based on serial monitor on gateway...

0;0;3;0;9;read: 255-255-255 s=250;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: 255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;0;3;0;9;send: 0-0-255-255 s=255,c=3,t=8,pt=1,l=1,sg=0,st=bc:0
0;0;3;0;9;read: 255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;0;3;0;9;send: 0-0-255-255 s=255,c=3,t=8,pt=1,l=1,sg=0,st=bc:0
0;0;3;0;9;read: 255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;0;3;0;9;send: 0-0-255-255 s=255,c=3,t=8,pt=1,l=1,sg=0,st=bc:0
0;0;3;0;9;read: 255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;0;3;0;9;send: 0-0-255-255 s=255,c=3,t=8,pt=1,l=1,sg=0,st=bc:0
0;0;3;0;9;read: 255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;0;3;0;9;send: 0-0-255-255 s=255,c=3,t=8,pt=1,l=1,sg=0,st=bc:0```

Serial Monitor for sensor shows...

1
find parent
send: 255-255-ind parent
s0,l=0,sg=0,st=bc:
1
find parent
send: 255-255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,st=bc:
1
find parent
send: 255-255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,st=bc:
0
find parent
send: 255-255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,st=bc:
1
find parent
send: 255-255-255-255 s=255,c=3,t=7,pt=0,l=0,sg=0,st=bc:

and repeats ad infinitum. No nodes or children show up in Domoticz. I am running stock Gateway and Sensor scripts with only 2 changes in MyConfig.h - Channel set to 100 and signal strength for sensors set to MAX.

MyConfig.h

/**
 * 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.
 */


#ifndef MyConfig_h
#define MyConfig_h
#include <stdint.h>

// Enable debug flag for debug prints. This will add a lot to the size of the final sketch but good
// to see what is actually is happening when developing
#define DEBUG

// Disable this line, If you are using TX(1), RX(0) as normal I/O pin
#define ENABLED_SERIAL

// Serial output baud rate (for debug prints and serial gateway)
#define BAUD_RATE 115200


/**********************************
*  Over the air firmware updates
***********************************/

// The following define enables the safe over-the-air firmware update feature
// which requires external flash and the DualOptiBoot bootloader.
// Note: You can still have OTA FW updates without external flash but it
// requires the MYSBootloader and disabled MY_OTA_FIRMWARE_FEATURE
//#define MY_OTA_FIRMWARE_FEATURE
// Slave select pin for external flash
#define MY_OTA_FLASH_SS 8
// Flash jdecid
#define MY_OTA_FLASH_JDECID 0x1F65


/**********************************
*  Information LEDs blinking
***********************************/
// This feature enables LEDs blinking on message receive, transmit
// or if some error occured. This was commonly used only in gateways,
// but now can be used in any sensor node. Also the LEDs can now be
// disabled in the gateway.

// #define WITH_LEDS_BLINKING

// The following setting allows you to inverse the blinking feature WITH_LEDS_BLINKING
// When WITH_LEDS_BLINKING_INVERSE is enabled LEDSs are normally turned on and switches
// off when blinking

//#define WITH_LEDS_BLINKING_INVERSE


// default LEDs blinking period in milliseconds
#define DEFAULT_LED_BLINK_PERIOD 300
// The RX LED default pin
#define DEFAULT_RX_LED_PIN 6
// The TX LED default pin
#define DEFAULT_TX_LED_PIN 5
// The Error LED default pin
#define DEFAULT_ERR_LED_PIN 4


/**********************************
*  Message Signing Settings
***********************************/
// Disable to completly disable signing functionality in library
//#define MY_SIGNING_FEATURE

// Define a suitable timeout for a signature verification session
// Consider the turnaround from a nonce being generated to a signed message being received
// which might vary, especially in networks with many hops. 5s ought to be enough for anyone.
#define MY_VERIFICATION_TIMEOUT_MS 5000

// Enable to turn on whitelisting
// When enabled, a signing node will salt the signature with it's unique signature and nodeId.
// The verifying node will look up the sender in a local table of trusted nodes and
// do the corresponding salting in order to verify the signature.
// For this reason, if whitelisting is enabled on one of the nodes in a sign-verify pair, both
// nodes have to implement whitelisting for this to work.
// Note that a node can still transmit a non-salted message (i.e. have whitelisting disabled)
// to a node that has whitelisting enabled (assuming the receiver does not have a matching entry
// for the sender in it's whitelist)
//#define MY_SECURE_NODE_WHITELISTING

// MySigningAtsha204 default setting
#define MY_ATSHA204_PIN 17 // A3 - pin where ATSHA204 is attached

// MySigningAtsha204Soft default settings
#define MY_RANDOMSEED_PIN 7 // A7 - Pin used for random generation (do not connect anything to this)

// Key to use for HMAC calculation in MySigningAtsha204Soft (32 bytes)
#define MY_HMAC_KEY 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00

/**********************************
*  NRF24L01 Driver Defaults
***********************************/
#define RF24_CE_PIN		   9
#define RF24_CS_PIN		   10
#define RF24_PA_LEVEL 	   RF24_PA_MAX
#define RF24_PA_LEVEL_GW   RF24_PA_MAX
// RF channel for the sensor net, 0-127
#define RF24_CHANNEL	   100
//RF24_250KBPS for 250kbs, RF24_1MBPS for 1Mbps, or RF24_2MBPS for 2Mbps
#define RF24_DATARATE 	   RF24_250KBPS
// This is also act as base value for sensor nodeId addresses. Change this (or channel) if you have more than one sensor network.
#define RF24_BASE_RADIO_ID ((uint64_t)0xA8A8E1FC00LL)

// Enable SOFTSPI for NRF24L01 when using the W5100 Ethernet module
//#define SOFTSPI
#ifdef SOFTSPI
	// Define the soft SPI pins used for NRF radio
	const uint8_t SOFT_SPI_MISO_PIN = 16;
    const uint8_t SOFT_SPI_MOSI_PIN = 15;
    const uint8_t SOFT_SPI_SCK_PIN = 14;
#endif


/**********************************
*  RFM69 Driver Defaults
***********************************/
// Default network id. Use the same for all nodes that will talk to each other
#define RFM69_NETWORKID     100

// Default frequency to use. This must match the hardware version of the RFM69 radio (uncomment one):
// #define RFM69_FREQUENCY   RF69_433MHZ
#define RFM69_FREQUENCY   RF69_868MHZ
//#define FREQUENCY     RF69_915MHZ

// Enable this for encryption of packets
//#define RFM69_ENABLE_ENCRYPTION
#define RFM69_ENCRYPTKEY    "sampleEncryptKey" //exactly the same 16 characters/bytes on all nodes!




#endif

Am I missing something simple here?

Thanks!! That solved it!!

Update: I should have mentioned in previous post that I have also attempted to remove and reinstall recipes. Also removed and reinstalled the arduino IDE. I also install IDE 1.0.6 which does result in different errors:

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enabled in File > Preferences.
Arduino: 1.0.6 (Linux), Board: "Arduino Nano w/ ATmega328"
In file included from SerialGateway.ino:53:
GatewayUtil.h:40: error: ‘MyParserSerial’ does not name a type
GatewayUtil.h:44: error: ‘MAX_PAYLOAD’ was not declared in this scope
GatewayUtil.h:67: error: expected ‘,’ or ‘...’ before ‘&’ token
GatewayUtil.h:67: error: ISO C++ forbids declaration of ‘MyMessage’ with no type
GatewayUtil.h: In function ‘void incomingMessage(int)’:
GatewayUtil.h:74: error: ‘message’ was not declared in this scope
GatewayUtil.h:74: error: ‘mGetCommand’ was not declared in this scope
GatewayUtil.h:74: error: ‘mGetAck’ was not declared in this scope
GatewayUtil.h:74: error: ‘convBuf’ was not declared in this scope
GatewayUtil.h: At global scope:
GatewayUtil.h:98: error: variable or field ‘parseAndSend’ declared void
GatewayUtil.h:98: error: ‘MySensor’ was not declared in this scope
GatewayUtil.h:98: error: ‘gw’ was not declared in this scope
GatewayUtil.h:98: error: expected primary-expression before ‘char’

I am also having a very similar problem trying to compile the code or the serial gateway onto a nano. I am running Arduino IDE 1.6.6.on Ubuntu 15.04. Error log as follows:

Arduino: 1.6.6 (Linux), Board: "Arduino Nano, ATmega328"

Warning: platform.txt from core 'MySensors AVR based boards' contains deprecated recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}", automatically converted to recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}". Consider upgrading this core.
WARNING: Category '' in library UIPEthernet is not valid. Setting to 'Uncategorized'
/home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:150:9: error: prototype for 'uint8_t SPIFlash::readByte(uint32_t)' does not match any in class 'SPIFlash'
uint8_t SPIFlash::readByte(uint32_t addr) {
^
In file included from /home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:35:0:
/home/glenn/Arduino/libraries/SPIFlash/SPIFlash.h:79:11: error: candidate is: uint8_t SPIFlash::readByte(long int)
uint8_t readByte(long addr);
^
/home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:161:6: error: prototype for 'void SPIFlash::readBytes(uint32_t, void*, uint16_t)' does not match any in class 'SPIFlash'
void SPIFlash::readBytes(uint32_t addr, void* buf, uint16_t len) {
^
In file included from /home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:35:0:
/home/glenn/Arduino/libraries/SPIFlash/SPIFlash.h:80:8: error: candidate is: void SPIFlash::readBytes(long int, void*, word)
void readBytes(long addr, void* buf, word len);
^
/home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:220:6: error: prototype for 'void SPIFlash::writeByte(uint32_t, uint8_t)' does not match any in class 'SPIFlash'
void SPIFlash::writeByte(uint32_t addr, uint8_t byt) {
^
In file included from /home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:35:0:
/home/glenn/Arduino/libraries/SPIFlash/SPIFlash.h:81:8: error: candidate is: void SPIFlash::writeByte(long int, uint8_t)
void writeByte(long addr, uint8_t byt);
^
/home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:234:6: error: prototype for 'void SPIFlash::writeBytes(uint32_t, const void*, uint16_t)' does not match any in class 'SPIFlash'
void SPIFlash::writeBytes(uint32_t addr, const void* buf, uint16_t len) {
^
In file included from /home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:35:0:
/home/glenn/Arduino/libraries/SPIFlash/SPIFlash.h:82:8: error: candidate is: void SPIFlash::writeBytes(long int, const void*, uint16_t)
void writeBytes(long addr, const void* buf, uint16_t len);
^
/home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:269:6: error: prototype for 'void SPIFlash::blockErase4K(uint32_t)' does not match any in class 'SPIFlash'
void SPIFlash::blockErase4K(uint32_t addr) {
^
In file included from /home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:35:0:
/home/glenn/Arduino/libraries/SPIFlash/SPIFlash.h:85:8: error: candidate is: void SPIFlash::blockErase4K(long int)
void blockErase4K(long address);
^
/home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:278:6: error: prototype for 'void SPIFlash::blockErase32K(uint32_t)' does not match any in class 'SPIFlash'
void SPIFlash::blockErase32K(uint32_t addr) {
^
In file included from /home/glenn/Arduino/libraries/MySensors/utility/SPIFlash.cpp:35:0:
/home/glenn/Arduino/libraries/SPIFlash/SPIFlash.h:86:8: error: candidate is: void SPIFlash::blockErase32K(long int)
void blockErase32K(long address);
^
exit status 1
Error compiling.

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