Subcategories

• Patron series

  No description available

  4
  Topics
  17
  Posts

  C

  Hello @lukec,
  I have sent you an e-mail with further questions.

• Neuron Series

  No description available

  174
  Topics
  726
  Posts

  K

  @cleve

  Neuron M103 (the old one, not the current) which is still running with Raspbian 10/ buster.

  How do I get the information about the firmware?

  (BTW: I tried to upgrade to latest Raspbian, but failed)

• Unipi 1 - First Generation

  No description available

  Unipi 1 - HW Q&A
  111
  Topics
  370
  Posts

  G

  I have a rain sensor from VELUX VXPRVX00081.
  I would like to measure the voltage at the 220K resistor. I need the lowest current possible to avoid electrolysis on the sensor so I think I can't acheive the bottom diagram.
  With the top diagram, my multimeter read the correct value of the voltage. More water, more current, more voltage. But once plugged in the AIx the value return by the MCP3422 is always at maximum.
  I'm using an external 12V power supply because of the internal sensor heater. The grounds are not connected together.
  I'm reading the value from cpp program with WiringPi and mcp3422.h. The gain is b00, the sample_rate is b11 and LSB 15.625. I red The K factor from the EEPROM.
  Here the _read funtion:

  float Analog_Input::_read() { std::lock_guard<std::mutex> lock(*i2cMutex); float value; value = analogRead (MCP3422_PIN_BASE + this->getChannel()) - 16; //std::cout << std::to_string(value) << std::endl; value = value * this->lsb / 1000 * this->getK() / 1000; //std::cout << std::to_string(value) << std::endl; return value; }

  So why I can't read the value of the voltage on the resistor, how to do ?
  Thanks in advance.
  Giamba.
  WhatsApp Image 2025-06-14 à 14.59.27_cbf19f60.jpg

• Unipi Extension Modules

  No description available

  21
  Topics
  100
  Posts

  G

  Škoda, protože věřím, že by stačilo udělat extension která by "jenom" používala jiné relé. Věřím, že bych nebyl jediný zákazník který by to využil.
  Ale i tak děkuji za odpověď.

• Axon series

  No description available

  42
  Topics
  138
  Posts

  C

  Hello @Bart-Delaere,
  unfortunately there is no definitive answer. The 1-Wire bus is technically able to connect huge amount of devices, but reality depends on cable length, quality, noise from the environment etc, so this may be trial and error for users that do not install it daily.

  Unipi used to sell a hub/splitter, which we do not offer anymore.

  Sometimes, a surge can occur in the environment, which can take down the whole bus. Unipi units (except Unipi 1/Lite) have an option to restart the bus (the bus is not restarted during normal system reboot), you can look in the Modbus table of your unit if you wish to implement it.

• Other Peripherals

  No description available

  63
  Topics
  238
  Posts

  M

  Hi all,

  I would like to know, whether somebody try this issue.

  I have water meter with HriMei - this is measurement with output MBUS and pulses.

  My question is:

  what I need to display to values liter per second and numbers from counter cubic meters. The Weintek display has input RS485 or modbus I know, that I need some convertor from HriMei to Weintek Below I post some chart/scheme, but I don´t know if it right or not Please, send me some your view or solutions how could be work

  Thank you very much for any answer

  6df6cd29-7534-4e5e-8a53-60a7c1c27a41-image.png