I see there is a possibility the combine Ethernet with RS485.
Maybe you can check the setup as they did here:
https://www.openhardware.io/view/649/RS485-Ethernet-Gateway#tabs-comments
https://github.com/feanor-anglin/GetWired-Project/blob/master/GetWired Ethernet Gateway/Gateway.ino
@Flyer said in 
Building a wired RS485 sensor network:
ng to build
Hi Flyer, As far as I know this is not possible.
This can maybe a solution for having a bridge between RS485 and nRF24L01.
Re: Bridge between RF24 and RS485
https://www.aliexpress.com/item/4000512016252.html?spm=a2g0o.productlist.0.0.7879a483YoMye0&algo_pvid=fd05d00f-4103-4e95-a0c1-f8af3889cffa&algo_expid=fd05d00f-4103-4e95-a0c1-f8af3889cffa-10&btsid=0bb0623b16125608659071681e09c9&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
thanks
Hello all,
is this solution added to the standard MySensor library?
If so, in which version is it implemented?
I want to be sure there are no missing messages when having a list of messages to be sent.
many thanks in advance
@mfalkvidd
OK, the before() works!
0 MCO:BGN:INIT NODE,CP=RSNNA--,VER=2.1.1
3 MCO:BGN:BFR
running before() function
2006 TSM:INIT
2011 TSF:WUR:MS=0
2012 TSM:INIT:TSP OK
2014 TSM:INIT:STATID=25
2016 TSF:SID:OK,ID=25
2018 TSM:FPAR
2036 TSF:MSG:SEND,25-25-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2850 TSF:MSG:READ,0-0-25,s=255,c=3,t=8,pt=1,l=1,sg=0:0
2855 TSF:MSG:FPAR OK,ID=0,D=1
4043 TSM:FPAR:OK
thanks for the cooperation mfalkvidd & rejoe2
hello rejoe2, you have to power the MAX chip before you come into the loop() because the first time you have to send the node configuration to the gw.
Putting the
pinMode(SENSOR_POWER_PIN, OUTPUT);
digitalWrite(SENSOR_POWER_PIN, HIGH);
code in the setup() is also too late.
If the MAX isn't powered before, you get error messages because the node can't connect to the gw.
btw the DE-PIN is not related to powering the transceiver --> right, it's a similar management, it was an example to find a solution
Is there a way to set an output pin high before sending the init message to the gateway?
so before
// Initialize messages
MyMessage msgTemp(CHILD_ID_TEMP,V_TEMP);
MyMessage sleepMsg(CHILD_ID_SLEEP, V_TEXT);
I want to save energy (300µA) so I want to power the MAX485 only when sending messages.
This is manageable in the sketch (set output pin high after returning from sleep mode, low before sleep) but at first start it isn't. I walked through the libraries but I didn't find the code where the DE pin is managed in order to send data to the MAX chip whch will send the data to the gateway. If I could find this I can make a similar set-up. Thanks in advance.
Great job guys, I saw many interested people.
The setup of the automated doll house was fascinating, also my son loved the sensor house (with the ghost)
Only this, I saw myself in one of taken pictures but unfortunately without the MySensor t-shirt ;-(
Hello,
I see a problem when using setSleepSeconds / setPowerPins in combination with the serial RS485 option.
void before() {
// setup the serial port baud rate
Serial.begin(MY_BAUD_RATE);
nodeManager.setSleepSeconds(30);
nodeManager.setPowerPins(11,12,1000);
/*
gives a temperature value of 7368:
0;255;3;0;9;TSF:MSG:READ,3-3-0,s=255,c=3,t=22,pt=5,l=4,sg=0:7368
3;255;3;0;22;7368
RECV S=3 I=255 C=3 T=22 P=
void before() {
// setup the serial port baud rate
Serial.begin(MY_BAUD_RATE);
nodeManager.setReportIntervalSeconds(50);
/*
gives a correct value:
0;255;3;0;9;TSF:MSG:READ,3-3-0,s=1,c=1,t=0,pt=7,l=5,sg=0:19.75
3;1;1;0;0;19.75
RECV S=3 I=1 C=1 T=0 P=
FYI
I already had report this in "https://forum.mysensors.org/topic/6534/nodemanager/100", but in that case I was already using V1.6-dev version.
*ArduiSens 4 days ago
@user2684, why does NodeManager take so many sketch memory?
e.g.
(#define BATTERY_MANAGER 1; #define DEBUG 1; #define MODULE_DS18B20 1)
sketch NodeManager RS485 config for DS18B20 --> 28730 bytes (93%) of program storage space. Maximum is 30720 bytes.
own sketch for RS485 SR04T --> 17078 bytes (55%) of program storage space. Maximum is 30720 bytes.
OK, DS18B20 and SR04T are not the same but DS18B20 is less complex, so 38% more memory is pretty much.*
@Sergio, I know and it's OK. I'm just playing (trying to convert my RS485 projects).
In the cases above I'm using Nano boards.
@user2684, why does NodeManager take so many sketch memory?
e.g.
(#define BATTERY_MANAGER 1; #define DEBUG 1; #define MODULE_DS18B20 1)
sketch NodeManager RS485 config for DS18B20 --> 28730 bytes (93%) of program storage space. Maximum is 30720 bytes.
own sketch for RS485 SR04T --> 17078 bytes (55%) of program storage space. Maximum is 30720 bytes.
OK, DS18B20 and SR04T are not the same but DS18B20 is less complex, so 38% more memory is pretty much.
Do I miss something?
@user2684, found the RS485 settings (thanks), but having problems with disabling the BATTERY_MANAGER option.
We don't need this option in a RS485 serial wired network (or RS485 serial gateway).
config.h:
#define BATTERY_MANAGER 0
gives following compiling errors:
sketch\NodeManager.cpp: In member function 'void NodeManager::process(Request&)':
NodeManager.cpp:3722: error: 'setBatteryReportSeconds' was not declared in this scope
case 40: setBatteryReportSeconds(request.getValueInt()); break;
NodeManager.cpp:3723: error: 'setBatteryReportHours' was not declared in this scope
case 41: setBatteryReportHours(request.getValueInt()); break;
NodeManager.cpp:3724: error: 'setBatteryReportDays' was not declared in this scope
case 42: setBatteryReportDays(request.getValueInt()); break;
exit status 1
'setBatteryReportSeconds' was not declared in this scope
Hello, is there an option to use the (fantastic) Node Manager in a RS485 wired set-up?
Nofox,
@nofox it's what gohan stated, the 120ohm resistors should only put on the first and last node of you network. And you can only use a "bus" network topology for RS485.You should use the other wires of you Ethernet cable to accomplish this like kimot wrote.
I know but not with the interface RS485 to Ethernet or NRF24L01+.
Only RS485 to USB which doesn't work when connecting to Synology NAS, in this case you also should wire it up to your NAS.
This would be a great step forward because today I can't find a good solution for connecting a RS485 wired sensor network to my Synology NAS without using USB (USB is complicated when using Arduino boards)
By option 1, do you mean a gateway-interface device like translating RS485 data into Ethernet?
I can do some integration testing 
Google for simple Modbus Master dcouments (arduino forum)
The MAX485 is not the best RS485 chip because of it's own internal impedance.
The chip in the diagram can be change by MAX485, MAX...
https://datasheets.maximintegrated.com/en/ds/MAX1487-MAX491.pdf
The 510 ohm pull up and pull down resistors are usually mounted on the master side. Theoretically it
would be best to install it in the middle of your bus line. The 120 ohm termination resistor must always
be used on distances greater than 1 meter and/or baud rates higher than 9600. It’s best to install it as a
norm as noise and reflections will cause havoc on your communication once implemented in the field.
The termination resistors should be mounted at both ends of the bus line. Please note that adding bias
resistors will load the driver IC output. With the indicated values the max number of units on the bus
line is limited to eight 12kΩ, sixteen 24kΩ, or thirty-two 48kΩ units.
For further protection transient suppressors can be installed across the differential lines, from the Vcc to
D+ and from GND to D-.!
Hello,
I have had some other problems too, one of them was the reconnections-after-30-sec problem with Domotics (via Synology). To solve this I have compiled my UNO (with ethernet shield at top) 2 minutes ago and now I have full contact with Domotics (on Synology NAS). Start playing now ...
thanks for the inspiration!
Hello,
You will solve the problem when compiling your arduino sketch with IDE 1.6.8.
I have compiled my UNO with ethernet shield at top 2 minutes ago and now I have full contact with Domotics (on Synology NAS).
go for it!
Dear all,
The MySensor program of the Ethernet gateway didn't work.
I saw a few posts saying to change background code / hardware if you work with UNO / Ethernet shield.
The comments about that are not clear for me, the reason way I post this issue.
The goal is to connect with Domoticz (on Synology) via the MySensor Ethernet gateway.
Can someone gives me a hint or link to a solved post?
thanks in advance
After installing the Arduino IDE 1.8.1 it is solved.
Other problem: I didn't find the last used arduino libraries in the 2.1.1 - Latest Release
e.g. Adafruit_BMP085
BH1750
Bounce2
DHT
...
Or do I have to load these (https://github.com/thozza/MySensors-Arduino/tree/master/libraries) to my library folder?
thanks in advance
@tbowmo said in Can't compiling GatewayW5100 sketch --> include SPI.h problem:
t
Hello,
I'm using version 1.6.4 with arduino Uno
regards,
Dear MySensor team,
I've downloaded the 2.1.1 - Latest Release
compiler log of the GatewayW5100 sketch :
In file included from C:\Users\User\Documents\Arduino\libraries\MySensors/drivers/RF24/RF24.cpp:23:0,
from C:\Users\User\Documents\Arduino\libraries\MySensors/MySensors.h:290,
from GatewayW5100.ino:116:
C:\Users\User\Documents\Arduino\libraries\MySensors/drivers/RF24/RF24.h:37:17: fatal error: SPI.h: No such file or directory
#include <SPI.h>
^
compilation terminated.
Thanks!
