# Hardware

**URL:** https://discourse.nodered.org/c/hardware/16.md?page=5

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 6

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## [How to solve this problem when installing node-red on a raspberry pi 3 2015](https://discourse.nodered.org/t/how-to-solve-this-problem-when-installing-node-red-on-a-raspberry-pi-3-2015/64400)

<div class="topic-metadata">

**Author:** [@JoanHc](https://discourse.nodered.org/u/JoanHc)\
**Replies:** 17\
**Last updated:** [7 February 2023 15:28 UTC](https://discourse.nodered.org/t/how-to-solve-this-problem-when-installing-node-red-on-a-raspberry-pi-3-2015/64400 "2023-02-07T15:28:03Z")

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## [ESP01s not working after flashing with ESP Easy \>\> Solution](https://discourse.nodered.org/t/esp01s-not-working-after-flashing-with-esp-easy-solution/9544)

<div class="topic-metadata">

**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 7\
**Last updated:** [30 March 2019 05:36 UTC](https://discourse.nodered.org/t/esp01s-not-working-after-flashing-with-esp-easy-solution/9544 "2019-03-30T05:36:07Z")

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This is a quick posting in case any one else gets tripped-up by the issue. Although I have a number of Wemos D1 Mini devices working with Node-RED, this is the first time I've tried using the smaller ESP01s variety. I …

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## [Node-Red with HiveMQ Cloud and Raspberry PI for IOT project](https://discourse.nodered.org/t/node-red-with-hivemq-cloud-and-raspberry-pi-for-iot-project/74806)

<div class="topic-metadata">

**Author:** [@shank](https://discourse.nodered.org/u/shank)\
**Replies:** 0\
**Last updated:** [6 February 2023 17:46 UTC](https://discourse.nodered.org/t/node-red-with-hivemq-cloud-and-raspberry-pi-for-iot-project/74806 "2023-02-06T17:46:07Z")

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I want to share a blog that i found interesting for IOT enthusiasts. the blog takes a sensors reading and uses Raspberry Pi Pico to transfer the value to a Node-Red dashboard via the HiveMQ free cloud broker. I liked…

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## [Has anyone tried... Pi Cockpit?](https://discourse.nodered.org/t/has-anyone-tried-pi-cockpit/74538)

<div class="topic-metadata">

**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 3\
**Last updated:** [6 February 2023 04:15 UTC](https://discourse.nodered.org/t/has-anyone-tried-pi-cockpit/74538 "2023-02-06T04:15:11Z")

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Has anyone tried using Pi-Cockpit to manage and control their Raspberry Pi(es) ?? Looks like an interesting idea. Also FREE for up to 5 Pi(es).

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## [Iduino - temperature sensor - NTC-MF52 thermistor to node-RED on Raspberry PI 4](https://discourse.nodered.org/t/iduino-temperature-sensor-ntc-mf52-thermistor-to-node-red-on-raspberry-pi-4/74660)

<div class="topic-metadata">

**Author:** [@fkristofb](https://discourse.nodered.org/u/fkristofb)\
**Replies:** 2\
**Last updated:** [3 February 2023 15:01 UTC](https://discourse.nodered.org/t/iduino-temperature-sensor-ntc-mf52-thermistor-to-node-red-on-raspberry-pi-4/74660 "2023-02-03T15:01:49Z")

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Hi, all! I am trying to read data from an Iduino - temperature sensor - NTC-MF52 thermistor into node-RED on a Raspberry PI 4 but am struggling to do so. It is likely that I am doing something wrong but it seems that i…

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## [Alternative to PI](https://discourse.nodered.org/t/alternative-to-pi/74374)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 2\
**Last updated:** [2 February 2023 13:57 UTC](https://discourse.nodered.org/t/alternative-to-pi/74374 "2023-02-02T13:57:06Z")

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Hi, What alternative are there to a PI, to run Node-red on. Need to be the same, just about, as a Pi Zero. I have one flow with 15 nodes handling about 10 messages per hour, so really low consumption Thank you

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## [Recommendation for remote or wired digital I/O to combine with NR running on Raspberry Pi](https://discourse.nodered.org/t/recommendation-for-remote-or-wired-digital-i-o-to-combine-with-nr-running-on-raspberry-pi/72463)

<div class="topic-metadata">

**Author:** [@OriolFM](https://discourse.nodered.org/u/OriolFM)\
**Replies:** 16\
**Last updated:** [2 February 2023 02:56 UTC](https://discourse.nodered.org/t/recommendation-for-remote-or-wired-digital-i-o-to-combine-with-nr-running-on-raspberry-pi/72463 "2023-02-02T02:56:38Z")

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I'm renovating a house and since it's quite big, I was thinking of automating things like lights, heating, and so on. I have a small Raspbery Pi 4 that I could use as dedicated NR server, but the I/O is clearly insuffic…

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## [A simple way to control relay](https://discourse.nodered.org/t/a-simple-way-to-control-relay/74336)

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**Author:** [@magicfire](https://discourse.nodered.org/u/magicfire)\
**Replies:** 13\
**Last updated:** [31 January 2023 06:07 UTC](https://discourse.nodered.org/t/a-simple-way-to-control-relay/74336 "2023-01-31T06:07:41Z")

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When you need to control relays , usually you use a raspberryPi. Mostly the pi works great, however, when you need an all-in-one tool to control realys communicate with 485 sensors read data from zigbee sensors What …

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## [Tuya local for dummies](https://discourse.nodered.org/t/tuya-local-for-dummies/74010)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 24\
**Last updated:** [30 January 2023 02:55 UTC](https://discourse.nodered.org/t/tuya-local-for-dummies/74010 "2023-01-30T02:55:13Z")

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Hi folks, Every time when I start googling for din-rail devices with wifi, I always come across nice looking devices from Tuya. A few examples: A circuit breaker with metering function: Circuit breakers for mult…

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## [RPI Locator website](https://discourse.nodered.org/t/rpi-locator-website/74376)

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**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Replies:** 0\
**Last updated:** [29 January 2023 20:17 UTC](https://discourse.nodered.org/t/rpi-locator-website/74376 "2023-01-29T20:17:25Z")

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Hopefully this site will start showing more possibilities to purchase a Raspberry Pi as 2023 progresses:

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## [Does anybody know a wifi switch with wet contacts](https://discourse.nodered.org/t/does-anybody-know-a-wifi-switch-with-wet-contacts/73015)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 18\
**Last updated:** [13 January 2023 15:25 UTC](https://discourse.nodered.org/t/does-anybody-know-a-wifi-switch-with-wet-contacts/73015 "2023-01-13T15:25:38Z")

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Hi folks, To start with: a happy new year for all of you :champagne: :clinking\_glasses: Tried to install my first Shelly 1 yesterday into my electricity closet, but the wiring diagram was a bit different as I had expec…

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## [Home made clip on energy meter/monitor](https://discourse.nodered.org/t/home-made-clip-on-energy-meter-monitor/73409)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 5\
**Last updated:** [11 January 2023 09:14 UTC](https://discourse.nodered.org/t/home-made-clip-on-energy-meter-monitor/73409 "2023-01-11T09:14:00Z")

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Has any one here had any experience of making their own CT type energy monitor. I was thinking along the lines of a Sonoff device (maybe a TH16) with a clamp type CT that can be repurposed/reprogrammed with Tasmota and t…

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## [New RPi camera has some extra functionality and bigger chip size](https://discourse.nodered.org/t/new-rpi-camera-has-some-extra-functionality-and-bigger-chip-size/73442)

<div class="topic-metadata">

**Author:** [@Bobo](https://discourse.nodered.org/u/Bobo)\
**Replies:** 0\
**Last updated:** [10 January 2023 06:40 UTC](https://discourse.nodered.org/t/new-rpi-camera-has-some-extra-functionality-and-bigger-chip-size/73442 "2023-01-10T06:40:42Z")

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Looks very interesting.

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## [LOGO 8.3 no connection](https://discourse.nodered.org/t/logo-8-3-no-connection/73058)

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**Author:** [@orelio](https://discourse.nodered.org/u/orelio)\
**Replies:** 7\
**Last updated:** [3 January 2023 16:03 UTC](https://discourse.nodered.org/t/logo-8-3-no-connection/73058 "2023-01-03T16:03:31Z")

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I have LOGO 8.3 but i don't have connection on logo side i use operaterpanel (02.00 and output 03.00 ) on node-red i use ip adres logo port 102 mode TSAP local TSAP 03.00 remote TSAP 02.00 i have an older logo 8.1…

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## ['Dumb' MQTT Battery Radiator Valve needed](https://discourse.nodered.org/t/dumb-mqtt-battery-radiator-valve-needed/72988)

<div class="topic-metadata">

**Author:** [@mudwalker](https://discourse.nodered.org/u/mudwalker)\
**Replies:** 16\
**Last updated:** [31 December 2022 16:13 UTC](https://discourse.nodered.org/t/dumb-mqtt-battery-radiator-valve-needed/72988 "2022-12-31T16:13:54Z")

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At the moment, I am using a Shelly TRV to control the flow of water to our Living Room Radiator where we need the best comfort. During a discussion regarding the Shelly TRV, it has become apparent that the extra feature…

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## [Controll Relay with ESP32 via MQTT issues](https://discourse.nodered.org/t/controll-relay-with-esp32-via-mqtt-issues/72815)

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**Author:** [@PapaSchIumpf](https://discourse.nodered.org/u/PapaSchIumpf)\
**Replies:** 15\
**Last updated:** [28 December 2022 16:55 UTC](https://discourse.nodered.org/t/controll-relay-with-esp32-via-mqtt-issues/72815 "2022-12-28T16:55:11Z")

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Hi everyone, i am running node red on a raspberry pi 4 and want to controll one or more relays on the dashboard. Also i want send sensor values from my ESP32 to the dashboard. Sending the sensor values works already f…

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## [Hardwired sensor network utilizing obsolete CAT6 infrastructure](https://discourse.nodered.org/t/hardwired-sensor-network-utilizing-obsolete-cat6-infrastructure/68402)

<div class="topic-metadata">

**Author:** [@henxan](https://discourse.nodered.org/u/henxan)\
**Replies:** 40\
**Last updated:** [21 December 2022 21:13 UTC](https://discourse.nodered.org/t/hardwired-sensor-network-utilizing-obsolete-cat6-infrastructure/68402 "2022-12-21T21:13:53Z")

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Looking for input. I'm going to outfit small private school I work at with temperature sensors. I do not find wireless (zigbee, wifi, etc.) sensors reliable. A couple of weeks ago, I realized that our school has wired c…

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## [Understanding Shelly aenergy vs apower for daily power consumption?](https://discourse.nodered.org/t/understanding-shelly-aenergy-vs-apower-for-daily-power-consumption/72331)

<div class="topic-metadata">

**Author:** [@escapist3734](https://discourse.nodered.org/u/escapist3734)\
**Replies:** 25\
**Last updated:** [20 December 2022 21:36 UTC](https://discourse.nodered.org/t/understanding-shelly-aenergy-vs-apower-for-daily-power-consumption/72331 "2022-12-20T21:36:57Z")

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Hey people! I've read the docu and also made some calculations, but nevertheless I come to no right solution. The Tasmota sends my out of the box a "kWh" which was exactly what I needed. I made query in influxdb and go…

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## [Hardware Recommendation: Thermometers/Hygrometers](https://discourse.nodered.org/t/hardware-recommendation-thermometers-hygrometers/71922)

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**Author:** [@duaw](https://discourse.nodered.org/u/duaw)\
**Replies:** 10\
**Last updated:** [12 December 2022 10:06 UTC](https://discourse.nodered.org/t/hardware-recommendation-thermometers-hygrometers/71922 "2022-12-12T10:06:45Z")

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Hi, Guys and Gals! I need some advice. So far I have a bunch of venerable Oregon Scientific thermometers/hygrometers connected to Node-RED via rfxcom-hardware getting the 433MHz signal and the contributed node. They run…

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## [Timestamps operation](https://discourse.nodered.org/t/timestamps-operation/70967)

<div class="topic-metadata">

**Author:** [@jipi](https://discourse.nodered.org/u/jipi)\
**Replies:** 1\
**Last updated:** [21 November 2022 11:22 UTC](https://discourse.nodered.org/t/timestamps-operation/70967 "2022-11-21T11:22:31Z")

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Hello, I have a problem with the use of timestamps. I want to make the difference between 2 timestamps and convert them to H:min:s.

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## [Headache about migrating dimmable halogen spots to LED spots](https://discourse.nodered.org/t/headache-about-migrating-dimmable-halogen-spots-to-led-spots/70427)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 20\
**Last updated:** [11 November 2022 23:23 UTC](https://discourse.nodered.org/t/headache-about-migrating-dimmable-halogen-spots-to-led-spots/70427 "2022-11-11T23:23:51Z")

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Hi folks, Need help again from the electrical guys in this community... In my living room there are 7 (12V) halogen spots that can be put on/off and dimmed via 3 separate physical push buttons. With a short click the …

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## [I2cdetect -y 1 problem](https://discourse.nodered.org/t/i2cdetect-y-1-problem/70276)

<div class="topic-metadata">

**Author:** [@WBr](https://discourse.nodered.org/u/WBr)\
**Replies:** 7\
**Last updated:** [10 November 2022 14:40 UTC](https://discourse.nodered.org/t/i2cdetect-y-1-problem/70276 "2022-11-10T14:40:14Z")

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I have a problem with my i2c and some components When I use the command i2cdetect -y 1 i see 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -…

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## [RS485 hardware for DMX](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163)

<div class="topic-metadata">

**Author:** [@JAComms](https://discourse.nodered.org/u/JAComms)\
**Replies:** 6\
**Last updated:** [9 November 2022 11:35 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163 "2022-11-09T11:35:29Z")

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Hi all, It is quite common on the Raspberry Pi to use RS485 hardware for DMX output. I have done a node search but with no luck (so far anyway) . Dose anyone know of such a node??? . Justin

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## [IOT Gateway WIFI + MQTT + Analog inputs](https://discourse.nodered.org/t/iot-gateway-wifi-mqtt-analog-inputs/70062)

<div class="topic-metadata">

**Author:** [@spyder0552](https://discourse.nodered.org/u/spyder0552)\
**Replies:** 2\
**Last updated:** [4 November 2022 07:20 UTC](https://discourse.nodered.org/t/iot-gateway-wifi-mqtt-analog-inputs/70062 "2022-11-04T07:20:56Z")

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Would anyone know of a good IOT Gateway that is WIFI based, accepts analog inputs (4-20ma, 0-5V ect) and then can send that data via MQTT? I have a device I am using...but it is getting increasingly harder to find suppl…

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## [Opentherm Gateway - 'starting flow'](https://discourse.nodered.org/t/opentherm-gateway-starting-flow/69905)

<div class="topic-metadata">

**Author:** [@mudwalker](https://discourse.nodered.org/u/mudwalker)\
**Replies:** 1\
**Last updated:** [1 November 2022 17:25 UTC](https://discourse.nodered.org/t/opentherm-gateway-starting-flow/69905 "2022-11-01T17:25:13Z")

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For those that were looking at the Shelly TRV thread, I have managed to get the new boiler and the OpenTherm Gateway operating together, along with controlling the Shelly TRVs I had to make a modification to the Heating…

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## [Schematic of SDM630-Modbus V2](https://discourse.nodered.org/t/schematic-of-sdm630-modbus-v2/69470)

<div class="topic-metadata">

**Author:** [@klio-klio](https://discourse.nodered.org/u/klio-klio)\
**Replies:** 0\
**Last updated:** [24 October 2022 06:31 UTC](https://discourse.nodered.org/t/schematic-of-sdm630-modbus-v2/69470 "2022-10-24T06:31:55Z")

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Does anyone have schematic of SDM630-Modbus V2. The power supply board is defective.I can’t identify all broken components

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## [Rasberry Pi 4 does it come with OS?](https://discourse.nodered.org/t/rasberry-pi-4-does-it-come-with-os/69433)

<div class="topic-metadata">

**Author:** [@damica51](https://discourse.nodered.org/u/damica51)\
**Replies:** 3\
**Last updated:** [22 October 2022 23:35 UTC](https://discourse.nodered.org/t/rasberry-pi-4-does-it-come-with-os/69433 "2022-10-22T23:35:53Z")

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If I purchase the Rasberry Pi 4 will this come with sometype of Operating System so that I can run Node Red (The latest version). I don't need any on board I/O as all of my node red flows will be accessing web Api's and …

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## [Mqtt from ESP to Node-red](https://discourse.nodered.org/t/mqtt-from-esp-to-node-red/69041)

<div class="topic-metadata">

**Author:** [@mojgithub](https://discourse.nodered.org/u/mojgithub)\
**Replies:** 24\
**Last updated:** [18 October 2022 21:45 UTC](https://discourse.nodered.org/t/mqtt-from-esp-to-node-red/69041 "2022-10-18T21:45:35Z")

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hi i am using EspMQTTClient.h on my ESP for sending mqtt to node-red. From my Mqtt nodes i am sending my data to influxdb node. Every 5min i send around 12mqtt msg from my ESP. On Node-red side i have set up a debug n…

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## [Rock pi 4 OS to work with node-red](https://discourse.nodered.org/t/rock-pi-4-os-to-work-with-node-red/68794)

<div class="topic-metadata">

**Author:** [@addi](https://discourse.nodered.org/u/addi)\
**Replies:** 12\
**Last updated:** [17 October 2022 07:52 UTC](https://discourse.nodered.org/t/rock-pi-4-os-to-work-with-node-red/68794 "2022-10-17T07:52:35Z")

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Hello! Does anybody know what OS must have ROCK PI to work properly with node-red??? Thanks in advance

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## [Reading and manipulating KNX-RF](https://discourse.nodered.org/t/reading-and-manipulating-knx-rf/68863)

<div class="topic-metadata">

**Author:** [@bohtho](https://discourse.nodered.org/u/bohtho)\
**Replies:** 0\
**Last updated:** [11 October 2022 12:34 UTC](https://discourse.nodered.org/t/reading-and-manipulating-knx-rf/68863 "2022-10-11T12:34:42Z")

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Mostly just wondering if anyone else have done something with anything of the following. I have had a wireless system of radiator thermostats and a central display unit from Siemens’ Synco series for over 12 years. I qu…

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