# Hardware

**URL:** https://discourse.nodered.org/c/hardware/16.md?page=6

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

**Page:** 7

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## [DS18B20 not functioning](https://discourse.nodered.org/t/ds18b20-not-functioning/68769)

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**Author:** [@fpfeifer](https://discourse.nodered.org/u/fpfeifer)\
**Replies:** 12\
**Last updated:** [9 October 2022 20:57 UTC](https://discourse.nodered.org/t/ds18b20-not-functioning/68769 "2022-10-09T20:57:53Z")

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Hello, I have the problem that I have 5 DS18B20 temperature sensors in my heating system. Now I have ordered 5 more and wanted to integrate them into the dashboard. The only problem is, if I connect all 10 sensors toget…

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## [Best practices for turning on/off a central heating system](https://discourse.nodered.org/t/best-practices-for-turning-on-off-a-central-heating-system/66663)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 80\
**Last updated:** [7 October 2022 03:23 UTC](https://discourse.nodered.org/t/best-practices-for-turning-on-off-a-central-heating-system/66663 "2022-10-07T03:23:16Z")

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Hi folks, I have a very classical CV system in my house: it burns oil to heat my boiler to have hot water, and to heat my radiators. Nothing smart at all. Recently I have added a temperature sensor, so I now have the …

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## [Audio Pre-Amp/Amp with API](https://discourse.nodered.org/t/audio-pre-amp-amp-with-api/67408)

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**Author:** [@TheadehAnank](https://discourse.nodered.org/u/TheadehAnank)\
**Replies:** 1\
**Last updated:** [14 September 2022 18:11 UTC](https://discourse.nodered.org/t/audio-pre-amp-amp-with-api/67408 "2022-09-14T18:11:51Z")

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Anyone aware of an audio pre-amp / amp with an API that could be controlled with Node Red? Personally I'm not looking for audiophile grade, but whatever you're aware of I think would be worthwhile posting for the communi…

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## [Outdoor IoT Hardware](https://discourse.nodered.org/t/outdoor-iot-hardware/67579)

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**Author:** [@RoganFPS](https://discourse.nodered.org/u/RoganFPS)\
**Replies:** 3\
**Last updated:** [12 September 2022 07:58 UTC](https://discourse.nodered.org/t/outdoor-iot-hardware/67579 "2022-09-12T07:58:25Z")

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I'm wondering if anyone could help me/point me in the right direction. I'm wanting to dip my toe in to some IoT hardware. I want to build something I can stick in my garden on a field that can attach things like soil moi…

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## [Tutorials: Node-RED and Pi-Plates](https://discourse.nodered.org/t/tutorials-node-red-and-pi-plates/67472)

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**Author:** [@Pi-Plates](https://discourse.nodered.org/u/Pi-Plates)\
**Replies:** 3\
**Last updated:** [9 September 2022 00:45 UTC](https://discourse.nodered.org/t/tutorials-node-red-and-pi-plates/67472 "2022-09-09T00:45:41Z")

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Hey guys, My name is Jerry Wasinger and about six years ago I started developing a line of products for the Raspberry Pi called Pi-Plates: These are a family of stackable and interchangeable add-on boards that provid…

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## [Use Aqara hub E1 with node-RED](https://discourse.nodered.org/t/use-aqara-hub-e1-with-node-red/67250)

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**Author:** [@Falfango](https://discourse.nodered.org/u/Falfango)\
**Replies:** 1\
**Last updated:** [2 September 2022 19:41 UTC](https://discourse.nodered.org/t/use-aqara-hub-e1-with-node-red/67250 "2022-09-02T19:41:30Z")

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Has anyone experience with the zigbee Aqara hub E1 (https://www.aqara.com/us/product/hub-e1) to integrate it to node-red? I tried node-red-contrib-xiaomi-miio, but this crashes node-red 3.02.

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## [Wired ethernet for Raspberry Pi Pico](https://discourse.nodered.org/t/wired-ethernet-for-raspberry-pi-pico/66998)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 3\
**Last updated:** [27 August 2022 11:13 UTC](https://discourse.nodered.org/t/wired-ethernet-for-raspberry-pi-pico/66998 "2022-08-27T11:13:20Z")

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Hi folks, People that know me well, will know that I like wireless stuff but that I prefer wired solutions where possible. Got a news feed this morning about a hack to communicate with a Pico via a wired ethernet conne…

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## [SSL certificates on advantech lorawan gateway for MQTT](https://discourse.nodered.org/t/ssl-certificates-on-advantech-lorawan-gateway-for-mqtt/66999)

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**Author:** [@Hossam\_Ali](https://discourse.nodered.org/u/Hossam_Ali)\
**Replies:** 3\
**Last updated:** [27 August 2022 10:12 UTC](https://discourse.nodered.org/t/ssl-certificates-on-advantech-lorawan-gateway-for-mqtt/66999 "2022-08-27T10:12:23Z")

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Hi Everyone, I am using something called advantech lorawan gateway and I would like to transfer the data from sensors directly to the cloud via the gateway. I am using node red and I would like to upload ssl certificate…

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## [Communicate with inverter via RS-232 to Ethernet gateway MOXA NPort 5110A](https://discourse.nodered.org/t/communicate-with-inverter-via-rs-232-to-ethernet-gateway-moxa-nport-5110a/66509)

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**Author:** [@FNW2022](https://discourse.nodered.org/u/FNW2022)\
**Replies:** 8\
**Last updated:** [25 August 2022 17:43 UTC](https://discourse.nodered.org/t/communicate-with-inverter-via-rs-232-to-ethernet-gateway-moxa-nport-5110a/66509 "2022-08-25T17:43:11Z")

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Hi folks, my actual setup consists of a PV power plant using a Studer Xtender XTM 4000-48 battery inverter and the corresponding RS-232 interface (Xcom-232i) to control the device. I would like to use the MOXA NPort Eth…

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## [Android and iOS apps based on Node-RED ui nodes](https://discourse.nodered.org/t/android-and-ios-apps-based-on-node-red-ui-nodes/66863)

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**Author:** [@CONNECT](https://discourse.nodered.org/u/CONNECT)\
**Replies:** 0\
**Last updated:** [24 August 2022 16:47 UTC](https://discourse.nodered.org/t/android-and-ios-apps-based-on-node-red-ui-nodes/66863 "2022-08-24T16:47:47Z")

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Нello, community! We want to open our mobile application nodes iglass-nodes (node) - Node-RED to any hardware. write in the comments what equipment you use, so that we make the best possible compatibility.

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## [Question(Advice wanted): External "display and control unit" with pi zero](https://discourse.nodered.org/t/question-advice-wanted-external-display-and-control-unit-with-pi-zero/66616)

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**Author:** [@Aaroneisele55](https://discourse.nodered.org/u/Aaroneisele55)\
**Replies:** 4\
**Last updated:** [19 August 2022 04:57 UTC](https://discourse.nodered.org/t/question-advice-wanted-external-display-and-control-unit-with-pi-zero/66616 "2022-08-19T04:57:08Z")

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Hello, I have: A Raspberry pi 4b with a keyboard, a camera and a unicorn hat connected An arduino Esplora that gives light sensor data to that pi via HC05 Bluetooth Serial and custom Program Now i wanted to have som…

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## [Useful Skill for Alexa custom notifications](https://discourse.nodered.org/t/useful-skill-for-alexa-custom-notifications/7444)

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**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Replies:** 15\
**Last updated:** [5 February 2019 16:31 UTC](https://discourse.nodered.org/t/useful-skill-for-alexa-custom-notifications/7444 "2019-02-05T16:31:33Z")

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This Alexa skill looks to be useful for sending custom notifications from node red to Alexa: www.notifymyecho.com

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## [SEND SMS from NODE RED using HUAWEI E8372 WINGLE](https://discourse.nodered.org/t/send-sms-from-node-red-using-huawei-e8372-wingle/65621)

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**Author:** [@baji\_l](https://discourse.nodered.org/u/baji_l)\
**Replies:** 3\
**Last updated:** [26 July 2022 14:57 UTC](https://discourse.nodered.org/t/send-sms-from-node-red-using-huawei-e8372-wingle/65621 "2022-07-26T14:57:18Z")

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Hi I am newbie with Node red, Exploring just over few months, working on a test project to send SMS using HUAWEI-SEND-SMS node. the wingle device is in the approved list and I am able to send SMS no issue. If the trigger…

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## [Raspberry Pi 4 on RaspbianOS 64bit (Bullseye), error on system date/time and cpu temp in NodeRed](https://discourse.nodered.org/t/raspberry-pi-4-on-raspbianos-64bit-bullseye-error-on-system-date-time-and-cpu-temp-in-nodered/65430)

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**Author:** [@SonoraTechnical](https://discourse.nodered.org/u/SonoraTechnical)\
**Replies:** 4\
**Last updated:** [21 July 2022 18:18 UTC](https://discourse.nodered.org/t/raspberry-pi-4-on-raspbianos-64bit-bullseye-error-on-system-date-time-and-cpu-temp-in-nodered/65430 "2022-07-21T18:18:55Z")

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I know this question is a bit specific to the RaspberryPi, so I'll save you the trouble and perform my own countdown 3-2-1-'This is not the correct forum'. Ok, we got that over with... I'm using some system level calls…

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## [Choosing the right solenoid](https://discourse.nodered.org/t/choosing-the-right-solenoid/65029)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 31\
**Last updated:** [15 July 2022 14:19 UTC](https://discourse.nodered.org/t/choosing-the-right-solenoid/65029 "2022-07-15T14:19:08Z")

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Hi folks, Had installed an electromagnetic valve for my sprinklers, which I need to control now via Node-RED. The valve contains a solenoid, and multiple options are available: Standard solenoid 24V AC Optional solen…

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## [UDP communication error](https://discourse.nodered.org/t/udp-communication-error/65020)

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**Author:** [@surmi](https://discourse.nodered.org/u/surmi)\
**Replies:** 6\
**Last updated:** [13 July 2022 10:18 UTC](https://discourse.nodered.org/t/udp-communication-error/65020 "2022-07-13T10:18:28Z")

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I am new here. I am running Node-Red on a Rapsberry Pi 4B and want to control a PLC with it. The PLC communicates with short binary messages over UDP, but does not respond to messages sent by Node-Red. I checked the data…

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## [How to call API on event based](https://discourse.nodered.org/t/how-to-call-api-on-event-based/64998)

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**Author:** [@Rahul\_98](https://discourse.nodered.org/u/Rahul_98)\
**Replies:** 1\
**Last updated:** [12 July 2022 11:09 UTC](https://discourse.nodered.org/t/how-to-call-api-on-event-based/64998 "2022-07-12T11:09:53Z")

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Hello! I want to send tag data to API based on condition ..when the tag value changes from (true) to (false) in device the API should send data .we should write a script for this configuration or there are any other wa…

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## [How to call API Based on condition](https://discourse.nodered.org/t/how-to-call-api-based-on-condition/64940)

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**Author:** [@Rahul\_98](https://discourse.nodered.org/u/Rahul_98)\
**Replies:** 0\
**Last updated:** [11 July 2022 11:38 UTC](https://discourse.nodered.org/t/how-to-call-api-based-on-condition/64940 "2022-07-11T11:38:43Z")

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Hello I should call the API based on condition. we will be getting the tag data from edge device when Tag1 value changes the API should send the data .I am not getting how to configure this problem could u please help m…

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## [New release \>\> Raspberry Pico with Wi-Fi capability](https://discourse.nodered.org/t/new-release-raspberry-pico-with-wi-fi-capability/64533)

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**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 20\
**Last updated:** [10 July 2022 15:00 UTC](https://discourse.nodered.org/t/new-release-raspberry-pico-with-wi-fi-capability/64533 "2022-07-10T15:00:14Z")

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Just seen this press release today (30th June 2022).

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## [Raspberry Pi Zero W with mosquitto, node-red, influxdb, grafana, pivpn](https://discourse.nodered.org/t/raspberry-pi-zero-w-with-mosquitto-node-red-influxdb-grafana-pivpn/64634)

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**Author:** [@mojgithub](https://discourse.nodered.org/u/mojgithub)\
**Replies:** 8\
**Last updated:** [4 July 2022 20:51 UTC](https://discourse.nodered.org/t/raspberry-pi-zero-w-with-mosquitto-node-red-influxdb-grafana-pivpn/64634 "2022-07-04T20:51:49Z")

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Hi, i would like to put these(mosquitto, node-red, influxdb, grafana, pivpn) on my Rasp Pi hardware. i have tried with my Raspberry Pi Zero W but i guess it is not capable of handling all this stuff(single CPU). After …

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## [Sending and "recycling" messages to LCD screen](https://discourse.nodered.org/t/sending-and-recycling-messages-to-lcd-screen/64423)

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**Author:** [@hiase](https://discourse.nodered.org/u/hiase)\
**Replies:** 5\
**Last updated:** [28 June 2022 14:19 UTC](https://discourse.nodered.org/t/sending-and-recycling-messages-to-lcd-screen/64423 "2022-06-28T14:19:18Z")

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Hello! I have a project where I send messages from Domoticz home automation system to 4x20 LCD screen connected to ESP8266 microcontroller. I use MQTT and Node-RED to get the messages shown on the LCD screen. My node str…

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## [Modbu serial failed](https://discourse.nodered.org/t/modbu-serial-failed/64363)

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**Author:** [@Por1995](https://discourse.nodered.org/u/Por1995)\
**Replies:** 6\
**Last updated:** [25 June 2022 16:40 UTC](https://discourse.nodered.org/t/modbu-serial-failed/64363 "2022-06-25T16:40:59Z")

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Hi every one I have a problem with modbus serial below how can I fix it node version 16.15.1 npm version 8.13.1 thank.

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## [Node-red-contrib-smartlifeair - Devices found but no Input available](https://discourse.nodered.org/t/node-red-contrib-smartlifeair-devices-found-but-no-input-available/63487)

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**Author:** [@aduroch](https://discourse.nodered.org/u/aduroch)\
**Replies:** 27\
**Last updated:** [22 June 2022 16:08 UTC](https://discourse.nodered.org/t/node-red-contrib-smartlifeair-devices-found-but-no-input-available/63487 "2022-06-22T16:08:45Z")

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Hello, I would like to control Smartplugs (2 different brands) using node-red-contrib-smartlifeair. The Device node can login with my SmartLife Air account correctly, so I can see my devices accordingly but I can't find…

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## [Adding parameters of Api in HTTP Request Node](https://discourse.nodered.org/t/adding-parameters-of-api-in-http-request-node/64205)

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**Author:** [@Rahul\_98](https://discourse.nodered.org/u/Rahul_98)\
**Replies:** 5\
**Last updated:** [21 June 2022 19:05 UTC](https://discourse.nodered.org/t/adding-parameters-of-api-in-http-request-node/64205 "2022-06-21T19:05:00Z")

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Below Flow is for calling API In that i have added the dateTime parameter i have written function but i am getting as error not able to call the parameters of API \[ { "id": "b34765c4163ec6fe", "type": "tab", "label"…

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## [New release of ESPeasy 2022/June/16](https://discourse.nodered.org/t/new-release-of-espeasy-2022-june-16/64040)

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**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 0\
**Last updated:** [17 June 2022 06:22 UTC](https://discourse.nodered.org/t/new-release-of-espeasy-2022-june-16/64040 "2022-06-17T06:22:07Z")

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I know quite a few people on the forum use ESP8266 devices flashed with ESPeasy (e.g Wemos D1 Mini) to interact with Node-RED. Just to let you know - there was a new release of ESPeasy firmware on 2022/June/16.

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## [Orno we 516, node red and usb serial rs485 adapter](https://discourse.nodered.org/t/orno-we-516-node-red-and-usb-serial-rs485-adapter/63906)

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**Author:** [@smirghelburghiu](https://discourse.nodered.org/u/smirghelburghiu)\
**Replies:** 7\
**Last updated:** [15 June 2022 12:52 UTC](https://discourse.nodered.org/t/orno-we-516-node-red-and-usb-serial-rs485-adapter/63906 "2022-06-15T12:52:24Z")

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Hello guys I try to read orno meter but i don't how to do it right. I can connect to meter, I read someting but value are rong I think.. Address for voltaje is 0x000E and i get values like this 0x4372 / 17266 and not …

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## [Arduino USB \> Firmata \> I2C \> \[GPIO PCF8574 + MCP23017 + temp BMP280\]](https://discourse.nodered.org/t/arduino-usb-firmata-i2c-gpio-pcf8574-mcp23017-temp-bmp280/24281)

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**Author:** [@PizzaProgram](https://discourse.nodered.org/u/PizzaProgram)\
**Replies:** 20\
**Last updated:** [8 June 2022 08:51 UTC](https://discourse.nodered.org/t/arduino-usb-firmata-i2c-gpio-pcf8574-mcp23017-temp-bmp280/24281 "2022-06-08T08:51:39Z")

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My question is: What is the recommended way to connect multiple I2C boards to Arduino boards to: use both Ardu's GPIOs + the I2C expanders too? Is firmata standard suitable for that, or I need to specify the I2C boards…

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## [Technique to use a matrix keypad from GPIO](https://discourse.nodered.org/t/technique-to-use-a-matrix-keypad-from-gpio/63439)

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**Author:** [@aduroch](https://discourse.nodered.org/u/aduroch)\
**Replies:** 6\
**Last updated:** [5 June 2022 16:09 UTC](https://discourse.nodered.org/t/technique-to-use-a-matrix-keypad-from-gpio/63439 "2022-06-05T16:09:25Z")

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Hello, I'm having a hardtime configuring an hardware matrix keypad 4x4 within Node Red, using GPIO on a raspberry PI 3B+ All the hardware is set and works good. I use Gpio Input pull-down for rows and Gpio Output for Co…

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## [Nice looking project boxes](https://discourse.nodered.org/t/nice-looking-project-boxes/63053)

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**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 14\
**Last updated:** [1 June 2022 13:38 UTC](https://discourse.nodered.org/t/nice-looking-project-boxes/63053 "2022-06-01T13:38:45Z")

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Like many here I'm often in need of a nice small enclosure to house sensors etc. I don't have access to a 3D printer so I'm always on the lookout for something that fits the bill. There are many on the market but most …

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## [New smart wifi radiator valves from Shelly](https://discourse.nodered.org/t/new-smart-wifi-radiator-valves-from-shelly/55876)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 143\
**Last updated:** [31 May 2022 14:42 UTC](https://discourse.nodered.org/t/new-smart-wifi-radiator-valves-from-shelly/55876 "2022-05-31T14:42:08Z")

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Hi folks I pauzed my node developments temporarily to be able to work on my own home automation. And I must admit that my Shelly plug S switches work very smooth, and are very easy to integrate into Node-RED. So I star…

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