UniPi Neuron Series

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  PWM on Neuron M503
  • francoisd

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  @francoisd You can do it by hand or use .csv to import Modbus device definition - https://kb.mervis.info/doku.php/en:mervis-ide:30-communication-protocols:30-modbus?s[]=modbus&s[]=csv I've created the device definition for you, so you can simply import it by right clicink on the modbus TCP channel and select Import device definition. The .csv file should contain: StationNumber,Name,Element,Count,Function,Writable,StType,ByteOrder,K,Q,X1,Y1,X2,Y2 1,PWM_prescale,1018,1,HoldingRegister,1,Int,12,,,,,, 1,PWM_cycle,1019,1,HoldingRegister,1,Int,12,,,,,,
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  Neuron L403
  • RaedHammad

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  dear @raedhammad, people should definitely know what they are going to face, but blaming our solution without knowing what went wrong... As stated previously, please continue in the email communication so we have just one point where to talk so we can discuss all your issues there. We can then past the conversation here if other might want to read through.
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  Nastavení Modbus serial pro elektroměr EM 340
  • Beny44

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  @beny44 A poslední dodatek mám k HW zapojení. Pokud zapojím linky, tak jak je označeno na obou zařízeních - A proti A, B proti B, bliká jen Tx LED a na elměru řádná zpráva o úspěšném doručení paketů po Modbus Pokud zapojím linky obráceně, svítí obě LED a na elměru se zobrazí úspěšný příjem a odeslání paketů.
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  Direct switch problém
  • jiriletak

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  @jiriletak Dobrý den, LED světla obecně se chovají kvůli integrovanému zroji tak, že špičkový proud při sepnutí může přesahova ti třicetinásobek proudu při běžném odběru. Rozhodně nedoporučujeme tedy takovétho zátěže připojovat přímo na RO našich jenotek a raději to řešit pomocí spínacích prvků k tomu určených. Naše RO jsou míněna jen jako ovládací, pro další silové spínací prvky.
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  var mountpoint on usb stick
  • ludwigj

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  Hi Martin Thank you for quick response. Jiri
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  Same RO at same time
  • arolli

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  Hi @arolli, yes, you can start all 4 relays at the same time. Martin
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  This topic is deleted!
  • crushermachine2

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  Raspbian useable?
  • knebb

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  Hello @knebb, the current official way is to use Raspbian Stretch, then add our repository and install evok from it. Use the instructions on https://github.com/UniPiTechnology/evok. Regards, Martin
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  Neuron M503 Analog Inputs 4-20 mA
  • dalibor

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  Hi @dalibor , that's odd, it should definitely work. Can you share the project with me on support@unipi.technology? Thanks, Martin
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  Digital Output Voltage ?
  • StevenBrs

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  Hi @stevenbrs, The DOs are NPN type (open collector), check the documentation for proper wiring. Everything is OK with your HW and SW, do not worry.
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  Wifi communication between 2 unipi neuron
  • ikiiwii

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  @ikiiwii Wifi Configuration is not yet implemented in Mervis, so you would have to configure the wifi client in linux using ssh. Then you will setup SSCP communication between those 2 Neurons.
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  Neuron 12V digital input
  • Martijn Hemeryck

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  Ok; took me quite some time, but I just did manage to read out the sensor values. Leaving this here as future reference; the involved PIR sensor was the Jablotron JS-20 Largo. A small schematic was provided with the sensor out of the box, but the key find for me was that the sensor outputs also need to be wired up to the 12V power source; see adapted schematic and pictures. Thanks a lot for the schematics, since they really made it possible for me to reverse-engineer the setup.
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  This topic is deleted!
  • anju123

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  S103-G use GSM/GPRS module to connect to internet
  • roberts_lando

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  @roberts_lando Hi, I've done all the steps to configure the internet connection but when I type "ifconfig" it doesn't show me the ppp0 interface. Could you please help me? when I type the command "cat /var/log/syslog" It show me this messages: Sep 4 13:41:52 raspberrypi pppd[1698]: pppd 2.4.7 started by root, uid 0 Sep 4 13:41:52 raspberrypi chat[1702]: abort on (BUSY) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (VOICE) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO CARRIER) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO DIALTONE) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO DIAL TONE) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (NO ANSWER) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (DELAYED) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (ERROR) Sep 4 13:41:52 raspberrypi chat[1702]: abort on (+CGATT: 0) Sep 4 13:41:52 raspberrypi chat[1702]: send (AT^M) Sep 4 13:41:52 raspberrypi chat[1702]: timeout set to 12 seconds Sep 4 13:41:52 raspberrypi chat[1702]: expect (OK) Sep 4 13:42:04 raspberrypi chat[1702]: alarm Sep 4 13:42:04 raspberrypi chat[1702]: Failed Sep 4 13:42:04 raspberrypi pppd[1698]: Connect script failed Sep 4 13:42:10 raspberrypi OWFS[477]: DEFAULT: ow_reconnect.c:(72) DS2482-100 bus master reconnected Sep 4 13:42:30 raspberrypi OWFS[477]: DEFAULT: ow_reconnect.c:(72) DS2482-100 bus master reconnected
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  Extcomm port for second RS485 on M503
  • Mohamed Dounnani

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  Hi @mohamed-dounnani, the addressing is as follows: /dev/extcomm/0/... <- All serial ports (0 = RS485 1.1, 1 = RS485 2.1) /dev/extcomm/1/... <- Serial ports of Group 1 (0 = RS485 1.1) /dev/extcomm/2/... <- Serial ports of Group 2 (0 = RS485 2.1) You can reveal the structure by listing the directory: unipi@L503-sn101:~ $ ls -l /dev/extcomm/* /dev/extcomm/0: total 0 lrwxrwxrwx 1 root root 12 Aug 31 09:51 0 -> ../../ttyNS0 lrwxrwxrwx 1 root root 12 Aug 31 09:51 1 -> ../../ttyNS1 /dev/extcomm/1: total 0 lrwxrwxrwx 1 root root 12 Aug 31 09:51 0 -> ../../ttyNS0 /dev/extcomm/2: total 0 lrwxrwxrwx 1 root root 12 Aug 31 09:51 0 -> ../../ttyNS1 Martin
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  Read Coil Analogic Output M103
  • Mohamed Dounnani

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  @mohamed-dounnani, your calculations are in order. With the tests we did above, I am afraid you received a PLC with wrong calibration data. The calibration is a way how to ensure that when you set a desired voltage through Modbus registers, it will in fact set the correct voltage on the terminal connectors. The calibration process is one of many throughout the assembly of the unit. The calibration is done on our testbenches and it means you have to send the unit back to us. We sincerely do apologize for this. Please send me (kudlacek@unipi.technology) your number of order for this PLC and I will get back to you with further information. Thank you very much, Martin
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  This topic is deleted!
  • Steve Vandenbussche

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  UniPi Neuron - UniPi-Mervis-OS-2018-08-03_v1.7-BETA and ssh
  • bartekwoznica

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  Hello @bartekwoznica, since image version 1.7 the SSH is disabled by default as a security measure. You can enable it by creating a file named "ssh" in the "boot" partition of the SD card. This process is identical to the Raspbian's: https://hackernoon.com/raspberry-pi-headless-install-462ccabd75d0 Martin
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  pH and EC sensor
  • Baggz

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  @martin-kudláček Thanks a lot, Martin! :-) I'll give it a chance.
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  This topic is deleted!
  • Mohamed Dounnani

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