@tomas_hora

BTW, I absolute love Neuron! <3 I'll put it everywhere.

Having a simple REST API is a bless.

Thank you for all your hard work that goes into UniPi!

@martin-kudláček

Thanks a lot, Martin! :-) I'll give it a chance.

Hi,

Are there any pH and EC sensors that work with Neuron? Via the 1-Wire?

Thanks in advance!

@OlivierP, what type of pH and EC sensors do you use? Would you recommend some?

Thanks in advance!

Hi,

What's the max length of a cable connecting via 1-Wire? Would like to have a temperature sensor with ~ 30 meter cable (CAT5E, FTP, PE) connected to the 1-Wire Bus. Would that work?

Thanks!

@tomas_hora

BTW, I absolute love Neuron! <3 I'll put it everywhere.

Having a simple REST API is a bless.

Thank you for all your hard work that goes into UniPi!

@tomas_hora

Thank a lot for your help!

I end up using Raspbian and it works out of the box! :-) Minibian seems to be a bit buggy, wouldn't recommend.

Thanks!

@tomas_hora

Yes, I did. Still the same. :-(

@tomas_hora, thanks for the reply!

Here's the output when installing the Overlay again.

$ git clone https://github.com/UniPiTechnology/neuron_tcp_modbus_overlay.git
Cloning into 'neuron_tcp_modbus_overlay'...
remote: Counting objects: 32, done.
remote: Total 32 (delta 0), reused 0 (delta 0), pack-reused 32
Unpacking objects: 100% (32/32), done.
Checking connectivity... done.

$ cd neuron_tcp_modbus_overlay/
$ ls
LICENSE  README.md  install.sh	neuron_tcp_server  spi_overlay

$ chmod +x install.sh 
$ ./install.sh 
Installing libmodbus
Hit http://archive.raspberrypi.org jessie InRelease
Hit http://archive.raspberrypi.org jessie/main armhf Packages          
Ign http://archive.raspberrypi.org jessie/main Translation-en                                                         
Hit http://mirrordirector.raspbian.org jessie InRelease               
Hit http://mirrordirector.raspbian.org jessie/main armhf Packages
Hit http://mirrordirector.raspbian.org jessie/firmware armhf Packages
Hit http://mirrordirector.raspbian.org jessie/non-free armhf Packages
Ign http://mirrordirector.raspbian.org jessie/firmware Translation-en
Ign http://mirrordirector.raspbian.org jessie/main Translation-en
Ign http://mirrordirector.raspbian.org jessie/non-free Translation-en                                                                                  
Reading package lists... Done                                                                                                                          
Reading package lists... Done
Building dependency tree        
Reading state information... Done
libmodbus-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Enabling SPI overlay
Warning (unit_address_vs_reg): Node /fragment@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /fragment@1 has a unit name, but no reg property
mkdir: cannot create directory '/opt/neurontcp': File exists
Compiling neurontcp server...
gcc -g -c  -I .  armspi.c -o armspi.o
gcc -g -c  -I .  spicrc.c -o spicrc.o
gcc -g -c  -I .  nb_modbus.c -o nb_modbus.o
gcc -g -c  -I .  armpty.c -o armpty.o
gcc -g -c  -I .  neuron_tcp_server.c -o neuron_tcp_server.o
gcc -g neuron_tcp_server.o armspi.o spicrc.o nb_modbus.o armpty.o  -lmodbus -lutil -o neuron_tcp_server
gcc -g -c  -I .  neuronspi.c -o neuronspi.o
gcc -g neuronspi.o armspi.o spicrc.o -o neuronspi
gcc -g -c  -I .  bandwidth-client.c -o bandwidth-client.o
gcc -g bandwidth-client.o armspi.o spicrc.o nb_modbus.o armpty.o  -lmodbus -lutil -o bandwidth-client
Installing Neuron TCP server into /opt/neurontcp/
cp: cannot create regular file '/opt/neurontcp/neuron_tcp_server': Text file busy
Enabling neurontcp service for systemd
Reboot is required. Is it OK to reboot now? [y/n] y

When I try to compile just the SPI Overlay, this what I get.

$ sh compile-dtc 
Warning (unit_address_vs_reg): Node /fragment@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /fragment@1 has a unit name, but no reg property

Also, contents of the /boot/config.txt is...

gpu_mem=16
dtparam=spi=on
dtparam=i2c_arm=on

#Enable i2c bus 1
device_tree_param=i2c1=on

#Enable UniPi Neuron SPI overlay
dtoverlay=neuron-spi
dtoverlay=w1-gpio
enable_uart=1

Isn't the issue in Minibian? Shall I try Raspbian?

Hi,

I bought Neuron M403, it's running Minibian and I'm having trouble getting it to work (e.g. accessing both groups, switching on/off relays).

• I have successfully installed Evok directly from master
• Evok service is running
• neuron_tcp_server is running

root       276  0.0  0.1   2384  1552 ?        Ss   10:18   0:00 /opt/neurontcp/neuron_tcp_server -p 502 --check-firmware
root       277  1.1  1.5  19812 15388 ?        Ss   10:18   0:01 /usr/bin/python /opt/evok/evok.py --path1=/etc/evok.conf --path2=/etc/evok-neuron.conf
message+   280  0.0  0.2   5408  2796 ?        Ss   10:18   0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
root       287  0.0  0.0   1608   316 ?        Ss   10:18   0:00 runsv git-daemon
gitlog     289  0.0  0.0   1752   968 ?        S    10:18   0:00 svlogd -tt /var/log/git-daemon
gitdaem+   293  0.0  0.1   3608  1724 ?        S    10:18   0:00 /usr/lib/git-core/git-daemon --verbose --reuseaddr --base-path=/var/lib /var/lib/git
root       302  0.0  0.2   3768  2416 ?        Ss   10:18   0:00 /lib/systemd/systemd-logind
root       329  0.0  0.1   3964  1708 tty1     Ss+  10:18   0:00 /sbin/agetty --noclear tty1 linux
root       330  0.0  0.1   3784  1896 ttyS0    Ss+  10:18   0:00 /sbin/agetty --keep-baud 115200 38400 9600 ttyS0 vt102
nobody     344  0.0  0.1   2204  1436 ?        Ss   10:18   0:00 /usr/sbin/thd --daemon --triggers /etc/triggerhappy/triggers.d/ --socket /var/run/thd.socket --pidfile /var/run/thd.pid --user nobody /dev/input/event*
ntp        353  0.0  0.3   5328  3628 ?        Ss   10:18   0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -c /var/lib/ntp/ntp.conf.dhcp -u 105:109
root       391  0.0  0.3   7140  3736 ?        Ss   10:18   0:00 /usr/sbin/apache2 -k start
www-data   394  0.0  0.3 229548  3412 ?        Sl   10:18   0:00 /usr/sbin/apache2 -k start
www-data   395  0.0  0.3 229548  3412 ?        Sl   10:18   0:00 /usr/sbin/apache2 -k start
root       450  0.0  1.2  19488 12136 ?        S    10:18   0:00 /usr/bin/python /opt/evok/evok.py --path1=/etc/evok.conf --path2=/etc/evok-neuron.conf

When I run the Neuron TCP server manually...

$ /opt/neurontcp/neuron_tcp_server -p 502 --check-firmware --verbose
Board on /dev/spidev0.1 firmware=4.6  hardware=0.16 (B-1000-1)
Cannot open device: No such file or directory
Cannot open device: No such file or directory
Board0 PTY0 /dev/pts/2
Starting loop

When I run Evok manually...

$ ./evok.py 
eprom:: UniPi Neuron M403 version: 1.0 serial: 0x8
Using config file /etc/evok-neuron.conf
HTTP server listening on port: 8088
Entering 1wire loop
New WebSocket client connected
[I 170125 09:51:24 web:1971] 200 GET /rest/all (192.168.7.185) 2.81ms

Contents of /etc/evok-neuron.conf...

#!! don't use # for inline comments

[MAIN]
webname = unipi-neuron
staticfiles = /var/www/evok
;password = test
;rpcpassword = test
secret = ut5kB3hhf6VmZCujXGQ5ZHb1EAfiXHcy
port = 80
enable_cors = False
cors_domains = *
modbus_port = 0
#modbus_address = 127.0.0.1
modbus_address = *

[NEURON_1]
scan_frequency = 2

[OWBUS_1]
owbus = --i2c=/dev/i2c-1:ALL     ; scanned bus (--i2c=/dev/i2c-1:ALL or localhost:2122 or 'u' for USB dongle)
interval = 3          ; [s] default sensor reading
scan_interval = 300    ; [s] how often is made searching

When I send a GET request to /rest/all (Evok REST API), this is what I get...

[
  {
    "circuit": "1_01",
    "debounce": 50,
    "counter": 0,
    "value": 0,
    "dev": "input",
    "counter_mode": "disabled"
  },
  {
    "circuit": "1_02",
    "debounce": 50,
    "counter": 0,
    "value": 0,
    "dev": "input",
    "counter_mode": "disabled"
  },
  {
    "circuit": "1_03",
    "debounce": 50,
    "counter": 0,
    "value": 0,
    "dev": "input",
    "counter_mode": "disabled"
  },
  {
    "circuit": "1_04",
    "debounce": 50,
    "counter": 0,
    "value": 0,
    "dev": "input",
    "counter_mode": "disabled"
  },
  {
    "value": 0,
    "pending": false,
    "circuit": "1_01",
    "dev": "relay"
  },
  {
    "value": 0,
    "pending": false,
    "circuit": "1_02",
    "dev": "relay"
  },
  {
    "value": 0,
    "pending": false,
    "circuit": "1_03",
    "dev": "relay"
  },
  {
    "value": 0,
    "pending": false,
    "circuit": "1_04",
    "dev": "relay"
  },
  {
    "value": 0.0159,
    "circuit": "1_01",
    "dev": "ai"
  },
  {
    "value": 0.014369322022101755,
    "circuit": "1_02",
    "dev": "ai"
  },
  {
    "value": 0.0105,
    "circuit": "1_01",
    "dev": "ao"
  }
]

The group 2 is completely missing.

When I try to switch a relay from the second group (POST /rest/relay/2_01), I'm getting an error {"errors": {"__all__": "Invalid device circuit number 2_01"}, "success": false}.

What am I doing wrong? Could you please help me?