Hello @FabioIT,
the Node-RED image is defacto a Raspberry Pi OS. You can proceed with any general tutorial for adding the desktop environment, which you can find on the offical Raspberry Pi OS webpage.
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RE: Installation manual Node-RED (use at your own risk)posted in Node-RED
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RE: Debug mode not showing variable values in program and function blocksposted in Mervis
Hi @Matt,
are you sure you have selected the actual instance of the FB?
The debugging of ST code is quite "buggy". On many occasions, the values are not shown or are incorrect. We are working on a fix.
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RE: Optimizing program for minimum real cycle time, lowest possible input lagposted in Mervis
Hi @r3sist, what program cycle are you trying to achieve? Typically, you cannot get lower than 10ms.
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RE: UNIPI 1.1 Lite: unused pins of GPIOCON documentation error?posted in UniPi 1 - HW Q&A
@Jeff I replied to you over email, but for documentation purposes, I'll reply also here.
You can find the connector pinout in the official documentation: https://kb.unipi.technology/en:files:products:03-unipi_1
Martin
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RE: Modbus RTU - NeuronL503 - Mervisposted in Mervis
Hi @OlivierP ,
you can change the byte order via MultiByte Order:
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RE: Pt1000 - NeuronL503 - Mervisposted in Mervis
Hello @OlivierP
the first thing is to configure the AI to measure resistance as described on https://kb.unipi.technology/en:sw:01-mervis:analog-inputs-hidden
Once that is done go to the same Properties Panel of the AI and choose transformation Lib.Core.V1_0.ResistanceToTemperature and then proper Kind of the transformation (used sensor).
More on that in the built-in Help of Mervis IDE acessible in the upper menu Help or by pressing F1 and search for "Variable transformation, configuration of analogue inputs"
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RE: Byte Array to Realposted in Mervis
Hello @Neuron_Flo,
we tried different approaches, but non of them gave the correct result. There doesn't seem to be a native way how to transform this data in ST code. It looks like you need to resort to the classic calculation according to: https://en.wikipedia.org/wiki/Single-precision_floating-point_formatMartin
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RE: Measure 2 Temperature and 2 Humidityposted in UniPi 1 - First Generation
Hello @FabioIT,
the SPI is not used by the Unipi 1.1 and it is not exposed as any port. You can access the SPI on the pin header of the Raspberry Pi, but it would require to create some "hat" that goes between the Rpi and the Unipi 1.1 ribbon connector.Martin
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RE: Byte Array to Realposted in Mervis
Hello @Neuron_Flo,
what is the source of these 4 bytes? Do you read them from some HW prototype?Martin