I'm new to MySensors and Vera.  I have a GoControl Z-Wave thermostat installed and working in Vera, so I know that Vera is working to that extent.  I built a serial gateway using the GatewaySerialNano code and a genuine Arduino Nano board.  I configured the gateway in Vera and I see "MySensors Plugin" in the "unknown category" devices.  I then built a temp and humidity node using an Arduino Pro and a BME280 sensor.  I don't see anything in Vera that indicates the BME280 is present.  Here's the node code:
// WNG mods
// 8/08/17 - Used MySensors example plus Sparkfun BME280 example to make a sketch
//   that uses BME280 sensor. Not tested yet.
//-----------------------------------------------------------------
// Sparkfun example here:
// https://github.com/sparkfun/SparkFun_BME280_Arduino_Library/blob/master/examples/I2C_ReadAllData/I2C_ReadAllData.ino
// Original MySensors sketch here:  
// https://www.mysensors.org/build/humidity
/**
 * 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
// Enable and select radio type attached 
#define MY_RADIO_NRF24
#include <SparkFunBME280.h>
#include <MySensors.h>  
//BME Library allows either I2C or SPI, so include both.
#include "Wire.h"  //I'm using I2C
#include "SPI.h"
//Global sensor object
BME280 mySensor;
// 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  0
#define CHILD_ID_TEMP 1
float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = false;
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
void presentation()  
{ 
  // Send the sketch version information to the gateway
  sendSketchInfo("BME280_Node", "1.0");
  // 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()
{
  //set up BME280
  //For I2C, enable the following and disable the SPI section
  mySensor.settings.commInterface   = I2C_MODE;
  mySensor.settings.I2CAddress      = 0x77;
  mySensor.settings.runMode         = 3; //Normal mode
  mySensor.settings.tStandby        = 0;  //0.5ms
  mySensor.settings.filter          = 0; //filter off
  mySensor.settings.tempOverSample  = 1;
  mySensor.settings.pressOverSample = 1;
  mySensor.settings.pressOverSample = 1;
  Serial.begin(115200);
  delay(3000);
  Serial.print("Program Started\n");
  Serial.print("Starting BME280... result of .begin(): 0x");
	
  //Calling .begin() causes the settings to be loaded
  delay(10);  //Make sure sensor had enough time to turn on. BME280 requires 2ms to start up.
  Serial.println(mySensor.begin(), HEX);
  Serial.print("Displaying ID, reset and ctrl regs\n");
  Serial.print("ID(0xD0): 0x");
  Serial.println(mySensor.readRegister(BME280_CHIP_ID_REG), HEX);
  Serial.print("Reset register(0xE0): 0x");
  Serial.println(mySensor.readRegister(BME280_RST_REG), HEX);
  Serial.print("ctrl_meas(0xF4): 0x");
  Serial.println(mySensor.readRegister(BME280_CTRL_MEAS_REG), HEX);
  Serial.print("ctrl_hum(0xF2): 0x");
  Serial.println(mySensor.readRegister(BME280_CTRL_HUMIDITY_REG), HEX);
  Serial.print("\n\n");
	
  // 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)
  delay(1000);
}
void loop()      
{  
  // Force reading sensor, so it works also after sleep()
  float temperature = mySensor.readTempF();
  float humidity    = mySensor.readFloatHumidity();
  
  // Get temperature
  temperature = mySensor.readTempF();
  if (isnan(temperature)) {
    Serial.println("Failed reading temperature!");
  } 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;
    // 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
  humidity = mySensor.readFloatHumidity();
  if (isnan(humidity)) {
    Serial.println("Failed reading humidity!");
  } 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); 
}
Here's the debug output of the BME280 node, including startup and a few sensor transmissions:
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 TSF:SID:OK,ID=1
16 TSM:FPAR
51 TSF:MSG:SEND,1-1-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
149 TSF:MSG:READ,0-0-1,s=255,c=3,t=8,pt=1,l=1,sg=0:0
153 TSF:MSG:FPAR OK,ID=0,D=1
2060 TSM:FPAR:OK
2060 TSM:ID
2062 TSM:ID:OK
2064 TSM:UPL
2068 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
2076 TSF:MSG:READ,0-0-1,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2082 TSF:MSG:PONG RECV,HP=1
2086 TSM:UPL:OK
2088 TSM:READY:ID=1,PAR=0,DIS=1
2093 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
2101 TSF:MSG:READ,0-0-1,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
2109 TSF:MSG:SEND,1-1-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.1.1
2119 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
4128 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=11,pt=0,l=11,sg=0,ft=0,st=OK:BME280_Node
4139 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.0
4147 TSF:MSG:SEND,1-1-0-0,s=0,c=0,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
4157 TSF:MSG:SEND,1-1-0-0,s=1,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
4163 MCO:REG:REQ
4167 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
4175 TSF:MSG:READ,0-0-1,s=255,c=3,t=27,pt=1,l=1,sg=0:1
4179 MCO:PIM:NODE REG=1
4184 MCO:BGN:STP
Program Started
Starting BME280... result of .begin(): 0x60
Displaying ID, reset and ctrl regs
ID(0xD0): 0x60
Reset register(0xE0): 0x0
ctrl_meas(0xF4): 0x27
ctrl_hum(0xF2): 0x0
8220 MCO:BGN:INIT OK,TSP=1
8230 TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:74.1
T: 74.14
8243 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
8249 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8255 MCO:SLP:TPD
8257 MCO:SLP:WUP=-1
8267 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
8275 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8282 MCO:SLP:TPD
8284 MCO:SLP:WUP=-1
8294 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
8302 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8308 MCO:SLP:TPD
8310 MCO:SLP:WUP=-1
8321 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
8329 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8335 MCO:SLP:TPD
8337 MCO:SLP:WUP=-1
8347 TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:74.2
T: 74.16
8357 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
8366 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8372 MCO:SLP:TPD
8374 MCO:SLP:WUP=-1
8384 TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:74.1
T: 74.14
8394 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
8402 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8409 MCO:SLP:TPD
8411 MCO:SLP:WUP=-1
8419 MCO:SLP:MS=5000,SMS=0,I1=255,M1=255,I2=255,M2=255
8425 MCO:SLP:TPD
8427 MCO:SLP:WUP=-1
8435 TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:74.1
T: 74.12
8448 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:76.3
H: 76.28
This looks normal to me, yes?
My question:  Why don't I see the node in Vera?  There must be something I haven't set up.
Thanks!