You've got it.
Your a chief.
I have deleted all references of empty files in my config file.
And it works perfectly....
Youhou.!!!!!!!!!!!!!!!!

Many thanks to all.....
And now, automation.. Yeah!!!

Hi,

There is a missing parameter in your sketch :
// The MAC address can be anything you want but should be unique on your network.
// Newer boards have a MAC address printed on the underside of the PCB, which you can (optionally) use.
// Note that most of the Ardunio examples use "DEAD BEEF FEED" for the MAC address.
#define MY_MAC_ADDRESS 0x90, 0xA2, 0xDA, 0x10, 0xEB, 0x1D

In normal way, this line is note really important.
But if you want to use two separate MQTT on the same network, you should add this line and modify the mac adress on the two MQTT...

Bye

You've got it.
Your a chief.
I have deleted all references of empty files in my config file.
And it works perfectly....
Youhou.!!!!!!!!!!!!!!!!

Many thanks to all.....
And now, automation.. Yeah!!!

I make some tests.
I switch v_type and s_type values in my sketch.
And when I write S_BINARY or S_LIGHT........ no add sensor appeared....

Haha, I think we ahve something.
My mysensor config is

mysensors:
 gateways:
 - device: 'COM4'
# persistence_file: 'mysensors.json'
 baud_rate: 115200
 debug: true
 persistence: false
 version: '1.5'
 optimistic: 'true'

and switch file is empty.... I don't see anything about that in homeassistant website...
What can I do?

Hi,

I reprogram the gateway with same pc than the switch, then the same mysensor library.
I launch homeassistant without persistent file mysensor.
And same problem...

Microsoft Windows [version 6.3.9600]
(c) 2013 Microsoft Corporation. Tous droits réservés.

C:\Users\Fabien>py -m homeassistant
Config directory: C:\Users\Fabien\AppData\Roaming\.homeassistant
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=homeas
sistant, service=turn_off>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=homeas
sistant, service=turn_on>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=homeas
sistant, service=toggle>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=homeas
sistant, service=reload_core_config>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=persis
tent_notification, service=create>
INFO:homeassistant.bootstrap:Home Assistant core initialized
INFO:homeassistant.loader:Loaded script from homeassistant.components.script
INFO:homeassistant.loader:Loaded group from homeassistant.components.group
INFO:homeassistant.loader:Loaded input_select from homeassistant.components.inpu
t_select
INFO:homeassistant.loader:Loaded media_player from homeassistant.components.medi
a_player
INFO:homeassistant.loader:Loaded http from homeassistant.components.http
INFO:homeassistant.loader:Loaded weblink from homeassistant.components.weblink
INFO:homeassistant.loader:Loaded automation from homeassistant.components.automa
tion
INFO:homeassistant.loader:Loaded shell_command from homeassistant.components.she
ll_command
INFO:homeassistant.loader:Loaded camera from homeassistant.components.camera
INFO:homeassistant.loader:Loaded mysensors from homeassistant.components.mysenso
rs
INFO:homeassistant.loader:Loaded frontend from homeassistant.components.frontend

INFO:homeassistant.loader:Loaded api from homeassistant.components.api
INFO:homeassistant.loader:Loaded history from homeassistant.components.history
INFO:homeassistant.loader:Loaded recorder from homeassistant.components.recorder

INFO:homeassistant.loader:Loaded input_slider from homeassistant.components.inpu
t_slider
INFO:homeassistant.loader:Loaded switch from homeassistant.components.switch
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=recor
der>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=input_
select, service=select_option>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=input_select.station, new_state=<state input_select.station=BBC Radio Be
rkshire; options=['BBC Radio Berkshire', 'BBC Radio Two', 'Heart'], friendly_nam
e=Station, icon=mdi:radio-tower @ 2016-08-17T21:07:10.881326+02:00>>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=input
_select>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=http>

ERROR:homeassistant.bootstrap:Invalid config for [media_player]: required key no
t provided @ data['platform']. Got None
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=weblink.freebox, new_state=<state weblink.freebox=http://192.168.1.1; fr
iendly_name=FreeBox, icon=mdi:router-wireless @ 2016-08-17T21:07:11.146946+02:00
>>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=webli
nk>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=shell_
command, service=battery>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=shell
_command>
INFO:homeassistant.loader:Loaded camera.generic from homeassistant.components.ca
mera.generic
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=camera.london_road, new_state=<state camera.london_road=idle; entity_pic
ture=/api/camera_proxy/camera.london_road?token=60691888, access_token=60691888,
 friendly_name=London Road @ 2016-08-17T21:07:11.240702+02:00>>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=camer
a>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=mysen
sors>
ERROR:homeassistant.bootstrap:Invalid config for [switch]: required key not prov
ided @ data['platform']. Got None
INFO:homeassistant.loader:Loaded sensor from homeassistant.components.sensor
INFO:homeassistant.loader:Loaded binary_sensor from homeassistant.components.bin
ary_sensor
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=api>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=senso
r>
INFO:homeassistant.core:Bus:Handling <Event platform_discovered[L]: service=load
_platform.sensor, platform=mysensors, discovered=>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=binar
y_sensor>
INFO:homeassistant.core:Bus:Handling <Event platform_discovered[L]: service=load
_platform.binary_sensor, platform=mysensors, discovered=>
INFO:homeassistant.loader:Loaded light from homeassistant.components.light
INFO:homeassistant.loader:Loaded sensor.mysensors from homeassistant.components.
sensor.mysensors
INFO:homeassistant.loader:Loaded binary_sensor.mysensors from homeassistant.comp
onents.binary_sensor.mysensors
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=front
end>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=light,
 service=turn_on>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=light,
 service=turn_off>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=light,
 service=toggle>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=light
>
INFO:homeassistant.core:Bus:Handling <Event platform_discovered[L]: service=load
_platform.light, platform=mysensors, discovered=>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=histo
ry>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=input_
slider, service=select_value>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=input_slider.volume, new_state=<state input_slider.volume=50; max=100, s
tep=1, min=0, friendly_name=Volume, icon=mdi:volume-high @ 2016-08-17T21:07:13.0
53199+02:00>>
INFO:homeassistant.loader:Loaded light.mysensors from homeassistant.components.l
ight.mysensors
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=input
_slider>
ERROR:homeassistant.bootstrap:Invalid config for [switch]: required key not prov
ided @ data['platform']. Got None
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=group
>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=script.battery, new_state=<state script.battery=off; friendly_name=batte
ry, icon=mdi:refresh @ 2016-08-17T21:07:13.178206+02:00>>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=script
, service=battery>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=script
, service=turn_on>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=script
, service=turn_off>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=script
, service=toggle>
INFO:homeassistant.core:Bus:Handling <Event component_loaded[L]: component=scrip
t>
ERROR:homeassistant.bootstrap:Invalid config for [automation]: required key not
provided @ data['action']. Got None
required key not provided @ data['trigger']. Got None
INFO:homeassistant.core:Starting Home Assistant (17 threads)
INFO:homeassistant.core:Bus:Handling <Event homeassistant_start[L]>
INFO:homeassistant.core:Timer:starting
INFO:mysensors.mysensors:Trying to connect to COM4
INFO:mysensors.mysensors:COM4 is open...
INFO:mysensors.mysensors:Connected to COM4
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:gateway started, id=0, parent=0, dist
ance=0
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=homeas
sistant, service=stop>
INFO:homeassistant.core:Bus:Handling <Event service_registered[L]: domain=homeas
sistant, service=restart>
INFO:homeassistant.components.http:Serving /api/stream to 192.168.1.1 (auth: Tru
e)
INFO:homeassistant.components.http:Serving /api/camera_proxy/camera.london_road
to 192.168.1.1 (auth: True)
INFO:homeassistant.components.http:Serving /api/bootstrap to 192.168.1.1 (auth:
True)
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1):
62.255.244.49
INFO:homeassistant.components.http:Serving /api/camera_proxy/camera.london_road
to 192.168.1.1 (auth: True)
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1):
62.255.244.49
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=1,c=1,t=0,pt=7,l=5,sg
=0:28.4
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 1-16-0 s=1,c=1,t=0,pt=7,l=5,sg=
0:29.8
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 1-16-0 s=0,c=1,t=1,pt=7,l=5,sg=
0:37.6
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=255,c=3,t=15,pt=2,l=2
,sg=0:0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=255,c=0,t=17,pt=0,l=5
,sg=0:1.5.4
INFO:homeassistant.components.mysensors:No sketch_name: node 55
INFO:homeassistant.components.mysensors:No sketch_name: node 55
INFO:homeassistant.components.mysensors:No sketch_name: node 55
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=255,c=3,t=6,pt=1,l=1,
sg=0:0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:send: 0-0-55-55 s=255,c=3,t=6,pt=0,l=
1,sg=0,st=ok:M
INFO:homeassistant.components.http:Serving /api/camera_proxy/camera.london_road
to 192.168.1.1 (auth: True)
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1):
62.255.244.49
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=255,c=3,t=11,pt=0,l=5
,sg=0:Relay
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=255,c=3,t=12,pt=0,l=3
,sg=0:1.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=4,c=0,t=3,pt=0,l=0,sg
=0:
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 55-55-0 s=4,c=1,t=2,pt=0,l=3,sg
=0:0.0
INFO:homeassistant.components.http:Serving /api/camera_proxy/camera.london_road
to 192.168.1.1 (auth: True)
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1):
62.255.244.49
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=255,c=0,t=18,pt=0,l=5
,sg=0:1.5.1
INFO:homeassistant.components.mysensors:No sketch_name: node 16
INFO:homeassistant.components.mysensors:No sketch_name: node 16
INFO:homeassistant.components.mysensors:No sketch_name: node 16
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=255,c=3,t=6,pt=1,l=1,
sg=0:0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:send: 0-0-16-16 s=255,c=3,t=6,pt=0,l=
1,sg=0,st=ok:M
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 7-2-0 s=3,c=1,t=18,pt=7,l=5,sg=
0:73094056.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 3-16-0 s=0,c=1,t=1,pt=7,l=5,sg=
0:51.8
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 7-2-0 s=4,c=1,t=18,pt=7,l=5,sg=
0:49055452.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 7-2-0 s=5,c=1,t=39,pt=7,l=5,sg=
0:0.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 7-2-0 s=6,c=1,t=39,pt=7,l=5,sg=
0:0.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 2-2-0 s=0,c=1,t=1,pt=7,l=5,sg=0
:86.9
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 7-2-0 s=7,c=1,t=39,pt=7,l=5,sg=
0:5.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 7-2-0 s=2,c=1,t=2,pt=7,l=5,sg=0
:0.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=255,c=3,t=11,pt=0,l=1
1,sg=0:Sonde Salon
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=255,c=3,t=12,pt=0,l=3
,sg=0:1.0
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=0,c=0,t=7,pt=0,l=8,sg
=0:Humidite
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=1,c=0,t=6,pt=0,l=11,s
g=0:Temperature
INFO:homeassistant.components.http:Serving /api/camera_proxy/camera.london_road
to 192.168.1.1 (auth: True)
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1):
62.255.244.49
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=1,c=1,t=0,pt=7,l=5,sg
=0:28.6
INFO:homeassistant.components.mysensors:Adding new devices: <Entity Sonde Salon
16 1: None>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=sensor.sonde_salon_16_1, new_state=<state sensor.sonde_salon_16_1=unavai
lable; friendly_name=Sonde Salon 16 1 @ 2016-08-17T21:07:48.412571+02:00>>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=<state s
ensor.sonde_salon_16_1=unavailable; friendly_name=Sonde Salon 16 1 @ 2016-08-17T
21:07:48.412571+02:00>, entity_id=sensor.sonde_salon_16_1, new_state=<state sens
or.sonde_salon_16_1=28.6; node_id=16, unit_of_measurement=°C, child_id=1, batter
y_level=0, device=COM4, V_TEMP=28.6, friendly_name=Sonde Salon 16 1 @ 2016-08-17
T21:07:48.412571+02:00>>
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=0,c=1,t=1,pt=7,l=5,sg
=0:1.0
INFO:homeassistant.components.mysensors:Adding new devices: <Entity Sonde Salon
16 0: None>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=None, en
tity_id=sensor.sonde_salon_16_0, new_state=<state sensor.sonde_salon_16_0=unavai
lable; friendly_name=Sonde Salon 16 0 @ 2016-08-17T21:07:50.412569+02:00>>
INFO:homeassistant.core:Bus:Handling <Event state_changed[L]: old_state=<state s
ensor.sonde_salon_16_0=unavailable; friendly_name=Sonde Salon 16 0 @ 2016-08-17T
21:07:50.412569+02:00>, entity_id=sensor.sonde_salon_16_0, new_state=<state sens
or.sonde_salon_16_0=1.0; node_id=16, friendly_name=Sonde Salon 16 0, child_id=0,
 battery_level=0, V_HUM=1.0, device=COM4, unit_of_measurement=% @ 2016-08-17T21:
07:50.443821+02:00>>
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 16-16-0 s=255,c=3,t=1,pt=0,l=0,
sg=0:
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:send: 0-0-16-16 s=255,c=3,t=1,pt=0,l=
10,sg=0,st=ok:14714608
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 5-16-0 s=1,c=1,t=0,pt=7,l=5,sg=
0:29.6
INFO:mysensors.mysensors:n:0 c:0 t:3 s:9 p:read: 5-16-0 s=0,c=1,t=1,pt=7,l=5,sg=
0:27.1

really, I don't know what's happen.

i check it now

I don't have some log file... can you tell me where it is in the folders?

No more result with persistent file to none (#) and persistent to false.
Deleting mysensor1.picle file.
Restarting homeassistant.
modify the switch to nodeid 56.
launch the switch.
And same things.....
For information, my temperatures sensors (mysensors) working perfectly.

here is a link to the sketch i'm using :
https://home-assistant.io/components/switch.mysensors/#example-sketch
I'm using the first one. Simple switch sketch.

Is it necessary to migrate to mysensors 2.0?