# Hardware

**URL:** https://discourse.nodered.org/c/hardware/16.md?page=9

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

**Page:** 10

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## [Using a raspberry compute module with Node-red](https://discourse.nodered.org/t/using-a-raspberry-compute-module-with-node-red/3607)

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**Author:** [@laurent83390](https://discourse.nodered.org/u/laurent83390)\
**Replies:** 3\
**Last updated:** [6 August 2021 14:51 UTC](https://discourse.nodered.org/t/using-a-raspberry-compute-module-with-node-red/3607 "2021-08-06T14:51:45Z")

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Does anybody know if the rpi-gpio node can be used with a compute module (cm3) ? The pin out is different and the rpi-gpio node does not detect the board type. Thank

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## [Haiku/SenseMe/Big Ass Fans](https://discourse.nodered.org/t/haiku-senseme-big-ass-fans/49154)

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**Author:** [@benflux](https://discourse.nodered.org/u/benflux)\
**Replies:** 7\
**Last updated:** [1 August 2021 08:54 UTC](https://discourse.nodered.org/t/haiku-senseme-big-ass-fans/49154 "2021-08-01T08:54:00Z")

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I can't seem to find any mention of a node for these fans - any tips?

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## [NR+XBee Conection](https://discourse.nodered.org/t/nr-xbee-conection/48450)

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**Author:** [@Martin10](https://discourse.nodered.org/u/Martin10)\
**Replies:** 62\
**Last updated:** [30 July 2021 18:59 UTC](https://discourse.nodered.org/t/nr-xbee-conection/48450 "2021-07-30T18:59:49Z")

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Hi, I came across this topic (Node-Red and Xbee S2C), I noticed that they use this (GitHub - angryelectron/xbmq-java: XBee / Mqtt Gateway GitHub - angryelectron/xbmq-js: NodeJS XBee to MQTT Gateway) and this (XBee · PyP…

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## [Numato USB GPIO 128 channel Board](https://discourse.nodered.org/t/numato-usb-gpio-128-channel-board/49017)

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**Author:** [@YannickBisschoff](https://discourse.nodered.org/u/YannickBisschoff)\
**Replies:** 0\
**Last updated:** [28 July 2021 12:45 UTC](https://discourse.nodered.org/t/numato-usb-gpio-128-channel-board/49017 "2021-07-28T12:45:21Z")

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I want to connect my numato USB GPIO 128 board to node-red. I use the serialport function, but when i send a message like ver it only respons the same message back. I tried to use a function node to at \\r at the end of…

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## [Pi Keyboard and usb hub](https://discourse.nodered.org/t/pi-keyboard-and-usb-hub/48939)

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**Author:** [@ttavlis](https://discourse.nodered.org/u/ttavlis)\
**Replies:** 2\
**Last updated:** [26 July 2021 22:11 UTC](https://discourse.nodered.org/t/pi-keyboard-and-usb-hub/48939 "2021-07-26T22:11:10Z")

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Hello all, a weird issue here, but hopefully somebody else has experienced it or knows how to solve it very easily. As the title says, I have a card reader connected directly to my pi zero w. When checking the output o…

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## [RPI + Sensors for agricultural equipment](https://discourse.nodered.org/t/rpi-sensors-for-agricultural-equipment/48609)

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**Author:** [@AusCoraJase](https://discourse.nodered.org/u/AusCoraJase)\
**Replies:** 3\
**Last updated:** [20 July 2021 03:37 UTC](https://discourse.nodered.org/t/rpi-sensors-for-agricultural-equipment/48609 "2021-07-20T03:37:44Z")

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Hi, I have a small project and looking for some assistance/advice. I have a background in IT but am new to Node Red and this type of hardware. What I am attempting to do is create a monitor/control panel for a piece of …

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## [Best industrial standard Hardware to run Node-RED](https://discourse.nodered.org/t/best-industrial-standard-hardware-to-run-node-red/48489)

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**Author:** [@Chetan](https://discourse.nodered.org/u/Chetan)\
**Replies:** 5\
**Last updated:** [18 July 2021 15:14 UTC](https://discourse.nodered.org/t/best-industrial-standard-hardware-to-run-node-red/48489 "2021-07-18T15:14:21Z")

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Hello All, I have a use case where i will be using NodeRED for my programming. basically i will be working with ModBus, MQTT, I2C protocols In case of analog signal I will be working between 0-24 V The hardware must …

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## [Control GPIO pins](https://discourse.nodered.org/t/control-gpio-pins/47530)

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**Author:** [@nada3s](https://discourse.nodered.org/u/nada3s)\
**Replies:** 3\
**Last updated:** [23 June 2021 17:24 UTC](https://discourse.nodered.org/t/control-gpio-pins/47530 "2021-06-23T17:24:04Z")

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hello, I need to control GPIO pins of the mdot board based on ARM microcontroller . how can I do it please??

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## [Newbie to NR, USB CDC challenge](https://discourse.nodered.org/t/newbie-to-nr-usb-cdc-challenge/46530)

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**Author:** [@DrGeoff](https://discourse.nodered.org/u/DrGeoff)\
**Replies:** 7\
**Last updated:** [22 June 2021 04:29 UTC](https://discourse.nodered.org/t/newbie-to-nr-usb-cdc-challenge/46530 "2021-06-22T04:29:12Z")

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We have devices that use FS-USB rather than UART, with their own VID and PID. I have integrated the node-red-contrib-usb 1.0.0 node, but as a newbie I am struggling to see how to use it. I have been searching for a sim…

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## [RPI Passive Heatsink getting hot running new install RPI with Node Red](https://discourse.nodered.org/t/rpi-passive-heatsink-getting-hot-running-new-install-rpi-with-node-red/47296)

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**Author:** [@CarloJongen](https://discourse.nodered.org/u/CarloJongen)\
**Replies:** 1\
**Last updated:** [17 June 2021 13:29 UTC](https://discourse.nodered.org/t/rpi-passive-heatsink-getting-hot-running-new-install-rpi-with-node-red/47296 "2021-06-17T13:29:34Z")

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I'm not sure if this is Node Red related but I've noticed this issue when I installed everything to run Node Red on a new RPI. I've installed Node Red on an RPI ( see details below RPI A ) in 2019 and all runs fine. The…

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## [Still using RPI v1 512MB update script fails](https://discourse.nodered.org/t/still-using-rpi-v1-512mb-update-script-fails/46419)

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**Author:** [@redDawn](https://discourse.nodered.org/u/redDawn)\
**Replies:** 0\
**Last updated:** [28 May 2021 18:30 UTC](https://discourse.nodered.org/t/still-using-rpi-v1-512mb-update-script-fails/46419 "2021-05-28T18:30:30Z")

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I managed to walk through the update script "update-nodejs-and-nodered.sh" and get back up and running, with everything up to date. May 28 13:53:04 myPi512 Node-RED\[606\]: Welcome to Node-RED May 28 13:53:04 myPi512 Node…

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## [BME680 and i2c communication](https://discourse.nodered.org/t/bme680-and-i2c-communication/15527)

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**Author:** [@user7](https://discourse.nodered.org/u/user7)\
**Replies:** 18\
**Last updated:** [25 May 2021 21:36 UTC](https://discourse.nodered.org/t/bme680-and-i2c-communication/15527 "2021-05-25T21:36:05Z")

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Hey, Have anyone managed to connect bme680 or similar i2c sensor in Nodered using i2c contrib node? Can you share the sample flow? I read the sensor datasheet, but looks like my knowledge is limited. I know the i2c ad…

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## [Where to get Aeotec Home Energy Meter](https://discourse.nodered.org/t/where-to-get-aeotec-home-energy-meter/46232)

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**Author:** [@arsharpe](https://discourse.nodered.org/u/arsharpe)\
**Replies:** 1\
**Last updated:** [25 May 2021 19:44 UTC](https://discourse.nodered.org/t/where-to-get-aeotec-home-energy-meter/46232 "2021-05-25T19:44:05Z")

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Hi, I am new to NodeRed and like how you can create dashboards quickly and easily. It would be great to get my existing Aeotec Home Energy Meter working on the system, but after spending about 2 hours Googling and gith…

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## [Battery powered pi NR projects?](https://discourse.nodered.org/t/battery-powered-pi-nr-projects/45819)

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**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 3\
**Last updated:** [19 May 2021 14:15 UTC](https://discourse.nodered.org/t/battery-powered-pi-nr-projects/45819 "2021-05-19T14:15:52Z")

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Just curious if anyone uses a pi powered from an 18650 or a lipo battery? And how do you handle the shutdown when the battery is running low? Or just cold turkey down when battery is down? I am thinking of an AD conve…

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## [Flow to link Ikea Trafri Buttons to Tradfri Bulbs](https://discourse.nodered.org/t/flow-to-link-ikea-trafri-buttons-to-tradfri-bulbs/45783)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 0\
**Last updated:** [17 May 2021 12:45 UTC](https://discourse.nodered.org/t/flow-to-link-ikea-trafri-buttons-to-tradfri-bulbs/45783 "2021-05-17T12:45:18Z")

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Hi all, I know that quite a few people are interested in the Ikea Tradfi range of relatively low-cost Zigbee devices. I got a load at the weekend to go with the Zigbee USB dongle I picked up a week or so ago. I wanted t…

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## [New "hub" campaign launched](https://discourse.nodered.org/t/new-hub-campaign-launched/45388)

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**Author:** [@LosinIt](https://discourse.nodered.org/u/LosinIt)\
**Replies:** 5\
**Last updated:** [9 May 2021 18:43 UTC](https://discourse.nodered.org/t/new-hub-campaign-launched/45388 "2021-05-09T18:43:03Z")

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Just a heads-up for anyone interested in home automation hubs:

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## [Permission denied /dev/ttyS0](https://discourse.nodered.org/t/permission-denied-dev-ttys0/44956)

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**Author:** [@BigWillow](https://discourse.nodered.org/u/BigWillow)\
**Replies:** 18\
**Last updated:** [1 May 2021 13:28 UTC](https://discourse.nodered.org/t/permission-denied-dev-ttys0/44956 "2021-05-01T13:28:44Z")

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Hi I am trying to get comms between a Pico and Pi3 (Pico as kHz freq counter). Looks like serial is the best option, so I have setup the Pico to send out serial data (looks OK on a scope) and trying to use the serial p…

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## [Can't get MCP4725 (I2C) to work](https://discourse.nodered.org/t/cant-get-mcp4725-i2c-to-work/44667)

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**Author:** [@fjmhoogl](https://discourse.nodered.org/u/fjmhoogl)\
**Replies:** 1\
**Last updated:** [25 April 2021 13:57 UTC](https://discourse.nodered.org/t/cant-get-mcp4725-i2c-to-work/44667 "2021-04-25T13:57:01Z")

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Dear all, I am trying to hook up a MCP4725 (12-bit DAC) breakout board to the I2C bus of my Raspberry. No matter that I do in Node-RED, I cannot get it to accept commands and output a voltage corresponding to msg.paylo…

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## [GPIO ouput pin does not change state](https://discourse.nodered.org/t/gpio-ouput-pin-does-not-change-state/44578)

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**Author:** [@rarmentas](https://discourse.nodered.org/u/rarmentas)\
**Replies:** 5\
**Last updated:** [24 April 2021 00:05 UTC](https://discourse.nodered.org/t/gpio-ouput-pin-does-not-change-state/44578 "2021-04-24T00:05:26Z")

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Hello everyone! I wonder if someone has faced the following issue: I am activating a GPIO output with a MQTT message: So when a message with a specific topic arrives, "filter timer..." node sends a "1" to the GPIO …

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## [Best / most stable OS and Hardware for NodeRed?](https://discourse.nodered.org/t/best-most-stable-os-and-hardware-for-nodered/8679)

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**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 44\
**Last updated:** [19 April 2021 12:47 UTC](https://discourse.nodered.org/t/best-most-stable-os-and-hardware-for-nodered/8679 "2021-04-19T12:47:32Z")

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Hi, this time i´m working a lot with NodeRed on an Raspberry with Rasbian installed. Sometimes i´m note sure if this is really a stable device (sd-card etc) ... but which OS / Hardware is the best and most stable to us…

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## [Serial Port Configuration - Windows](https://discourse.nodered.org/t/serial-port-configuration-windows/44229)

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**Author:** [@sathishkumarc14](https://discourse.nodered.org/u/sathishkumarc14)\
**Replies:** 20\
**Last updated:** [17 April 2021 15:25 UTC](https://discourse.nodered.org/t/serial-port-configuration-windows/44229 "2021-04-17T15:25:50Z")

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I am new to getting data from serial device with Node RED. Can have the serial port What is the purpose of settings DTR, RTS, CTS and DSR in serial port configuration? Is this impact while fetching data from serial dev…

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## [Temperature sensor selection](https://discourse.nodered.org/t/temperature-sensor-selection/43310)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 41\
**Last updated:** [14 April 2021 08:43 UTC](https://discourse.nodered.org/t/temperature-sensor-selection/43310 "2021-04-14T08:43:13Z")

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Hi guys. I have an older style central heating system with separate radiators and hot water tank that is heated by a traditional gas boiler (not a combi boiler system) I have successfully automated the heating side of …

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## [Unified Lighting Control](https://discourse.nodered.org/t/unified-lighting-control/43969)

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**Author:** [@TheadehAnank](https://discourse.nodered.org/u/TheadehAnank)\
**Replies:** 1\
**Last updated:** [11 April 2021 10:16 UTC](https://discourse.nodered.org/t/unified-lighting-control/43969 "2021-04-11T10:16:02Z")

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My ideal approach to home lighting is to have high quality (90+ CRI) tunable white bulbs where the color temperature adjusts through-out the day and can otherwise be controlled via wall switches. I already have an algori…

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## [Ads1115 noise issue](https://discourse.nodered.org/t/ads1115-noise-issue/43638)

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**Author:** [@Steve\_Cotton](https://discourse.nodered.org/u/Steve_Cotton)\
**Replies:** 11\
**Last updated:** [5 April 2021 12:03 UTC](https://discourse.nodered.org/t/ads1115-noise-issue/43638 "2021-04-05T12:03:03Z")

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Hello, i have an issue with the ADS115 connected to a waterlevel-sensor. The ADS Input is between 0 and 2.2V, wich equals 0 and 100%. The input voltage is completely stable in every state. In node red I get the the out…

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## [Function can not send Buffer? + Serial problem](https://discourse.nodered.org/t/function-can-not-send-buffer-serial-problem/43632)

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**Author:** [@Garug](https://discourse.nodered.org/u/Garug)\
**Replies:** 14\
**Last updated:** [5 April 2021 09:31 UTC](https://discourse.nodered.org/t/function-can-not-send-buffer-serial-problem/43632 "2021-04-05T09:31:19Z")

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I am trying to send bytes on serial, not sure exactly what the problem is. On of the problem is it seems function can not output a binary buffer only but complains of error. when sending the complete msg that contains …

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## [Bluetooth Android box](https://discourse.nodered.org/t/bluetooth-android-box/43527)

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**Author:** [@akszyn\_pl](https://discourse.nodered.org/u/akszyn_pl)\
**Replies:** 0\
**Last updated:** [2 April 2021 00:33 UTC](https://discourse.nodered.org/t/bluetooth-android-box/43527 "2021-04-02T00:33:11Z")

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can you use node-red to add bluetooth to a device that does not have it? I have an Android box device without bluetooth with installed home assistant and bluetooth dongle. I have tried many commands on the command line…

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## [Node-red-contrib-socketcan 1.0.11 installation failed](https://discourse.nodered.org/t/node-red-contrib-socketcan-1-0-11-installation-failed/42929)

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**Author:** [@roadrunner250](https://discourse.nodered.org/u/roadrunner250)\
**Replies:** 27\
**Last updated:** [28 March 2021 18:21 UTC](https://discourse.nodered.org/t/node-red-contrib-socketcan-1-0-11-installation-failed/42929 "2021-03-28T18:21:15Z")

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V1.2.2 running on OpenWrt 1.0.8 Rabbit / LuCI openwrt-19.07 branch git-20.247.75781-0d0ab01 Want to read Canbus Data and send it by MQTT. Can0 working well on OpenWrt, cansend and candump working well How to get can0 …

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## [Difference in NODE-Red dashboard addresses in Raspberry Pi 3](https://discourse.nodered.org/t/difference-in-node-red-dashboard-addresses-in-raspberry-pi-3/42997)

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**Author:** [@HZB](https://discourse.nodered.org/u/HZB)\
**Replies:** 2\
**Last updated:** [22 March 2021 19:15 UTC](https://discourse.nodered.org/t/difference-in-node-red-dashboard-addresses-in-raspberry-pi-3/42997 "2021-03-22T19:15:54Z")

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Hi I have 2 different Raspberry Pi 3. Both of then are hosting dashboards. But the problem is the way to access the dashboards. For the first one i can access dashboard from http://IP\_of\_RPI1:1880/ui, but for the other …

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## [Node-red install on android](https://discourse.nodered.org/t/node-red-install-on-android/42645)

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**Author:** [@jfpedno](https://discourse.nodered.org/u/jfpedno)\
**Replies:** 1\
**Last updated:** [14 March 2021 22:31 UTC](https://discourse.nodered.org/t/node-red-install-on-android/42645 "2021-03-14T22:31:04Z")

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I had those npm error messages running the node-red unsafe perm command. then tried node-red : command not found. Someone would have any tips on that please ...

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## ["Controlling" the LED on the Pico :)](https://discourse.nodered.org/t/controlling-the-led-on-the-pico/39602)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 8\
**Last updated:** [13 March 2021 13:56 UTC](https://discourse.nodered.org/t/controlling-the-led-on-the-pico/39602 "2021-03-13T13:56:20Z")

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Just installed Micropython onto it and used the serial REPL interface

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