# DS18B20 to InfluxDB and CSV
**URL:** https://discourse.nodered.org/t/ds18b20-to-influxdb-and-csv/43394
**Category:** General
**Created:** [30 March 2021 10:46 UTC](https://discourse.nodered.org/t/ds18b20-to-influxdb-and-csv/43394 "2021-03-30T10:46:53Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@jonchargreaves](https://discourse.nodered.org/u/jonchargreaves)
#### Post date: [30 March 2021 10:46 UTC](https://discourse.nodered.org/t/ds18b20-to-influxdb-and-csv/43394/1 "2021-03-30T10:46:53Z")
Hi all, first time user here, excited to use Node-Red for the first time but I'm a little stuck I want to read the temperature from 5 DS18B20 sensors and then send the data to InfluxDB and also to a CSV file for additional storage. The InfluxDB portion of my flow is working but the CSV part seems to be going wrong.
```auto
[{"id":"d75f132e.9cd8e","type":"influxdb out","z":"dd23e5d5.15c548","influxdb":"5bc5f00a.deb918","name":"","measurement":"sensor1","precision":"","retentionPolicy":"","database":"database","precisionV18FluxV20":"ms","retentionPolicyV18Flux":"","org":"organisation","bucket":"bucket","x":660,"y":460,"wires":[]},{"id":"b6ddfbdf.97f4e8","type":"influxdb out","z":"dd23e5d5.15c548","influxdb":"5bc5f00a.deb918","name":"","measurement":"sensor2","precision":"","retentionPolicy":"","database":"database","precisionV18FluxV20":"ms","retentionPolicyV18Flux":"","org":"organisation","bucket":"bucket","x":660,"y":520,"wires":[]},{"id":"c2542312.e7c9c8","type":"influxdb out","z":"dd23e5d5.15c548","influxdb":"5bc5f00a.deb918","name":"","measurement":"sensor3","precision":"","retentionPolicy":"","database":"database","precisionV18FluxV20":"ms","retentionPolicyV18Flux":"","org":"organisation","bucket":"bucket","x":660,"y":580,"wires":[]},{"id":"9f27b9f1.36709","type":"influxdb out","z":"dd23e5d5.15c548","influxdb":"5bc5f00a.deb918","name":"","measurement":"sensor4","precision":"","retentionPolicy":"","database":"database","precisionV18FluxV20":"ms","retentionPolicyV18Flux":"","org":"organisation","bucket":"bucket","x":660,"y":640,"wires":[]},{"id":"c389690.a122418","type":"influxdb out","z":"dd23e5d5.15c548","influxdb":"5bc5f00a.deb918","name":"","measurement":"sensor5","precision":"","retentionPolicy":"","database":"database","precisionV18FluxV20":"ms","retentionPolicyV18Flux":"","org":"organisation","bucket":"bucket","x":660,"y":700,"wires":[]},{"id":"8fcc8a56.3202a","type":"ds18b20","z":"dd23e5d5.15c548","name":"","sensorid":"28-3c01d075948c","timer":"0.5","x":230,"y":640,"wires":[["9f27b9f1.36709","b0bf9ead.cf673"]]},{"id":"71465659.3913a","type":"debug","z":"dd23e5d5.15c548","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":430,"y":400,"wires":[]},{"id":"58efe0b7.8cdfa","type":"debug","z":"dd23e5d5.15c548","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":430,"y":480,"wires":[]},{"id":"f92372e3.6c567","type":"debug","z":"dd23e5d5.15c548","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":430,"y":540,"wires":[]},{"id":"b0bf9ead.cf673","type":"debug","z":"dd23e5d5.15c548","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":430,"y":660,"wires":[]},{"id":"53f93d96.b06bc4","type":"debug","z":"dd23e5d5.15c548","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":430,"y":740,"wires":[]},{"id":"5bacbc37.84bd8c","type":"inject","z":"dd23e5d5.15c548","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"5","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":810,"y":360,"wires":[["6908bcd8.103e84"]]},{"id":"915cad23.91c21","type":"file","z":"dd23e5d5.15c548","name":"","filename":"/home/pi/datalog/temperature.csv","appendNewline":true,"createDir":false,"overwriteFile":"false","encoding":"none","x":1660,"y":560,"wires":[[]]},{"id":"96c31caf.d53848","type":"function","z":"dd23e5d5.15c548","name":"temp_a22d2","func":"msg.topic = \"B-Temp1\"\npayload = msg.payload.number;\nmsg.payload = payload;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":980,"y":500,"wires":[["42606179.1961d8"]]},{"id":"24db0593.bad732","type":"function","z":"dd23e5d5.15c548","name":"temp_9b846","func":"msg.topic = \"C-Temp2\"\npayload = msg.payload.temperature;\nmsg.payload = payload;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":981,"y":540,"wires":[["42606179.1961d8"]]},{"id":"42606179.1961d8","type":"join","z":"dd23e5d5.15c548","name":"","mode":"custom","build":"object","property":"payload","propertyType":"msg","key":"topic","joiner":"\\n","joinerType":"str","accumulate":false,"timeout":"","count":"5","reduceRight":false,"reduceExp":"","reduceInit":"","reduceInitType":"num","reduceFixup":"","x":1210,"y":560,"wires":[["63a4147f.5be21c","46fb648a.fa1dfc"]]},{"id":"6908bcd8.103e84","type":"function","z":"dd23e5d5.15c548","name":"time","func":"msg.topic = \"A-time\"\nvar d = new Date();\nvar t = d.getTime();\npayload=t;\nmsg.payload=payload;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":959,"y":460,"wires":[["42606179.1961d8"]]},{"id":"63a4147f.5be21c","type":"csv","z":"dd23e5d5.15c548","name":"","sep":",","hdrin":"","hdrout":"","multi":"one","ret":"\\n","temp":"Time, Temp1, Temp2, Temp3, Temp4","skip":"0","strings":true,"include_empty_strings":true,"include_null_values":true,"x":1430,"y":560,"wires":[["915cad23.91c21"]]},{"id":"46fb648a.fa1dfc","type":"debug","z":"dd23e5d5.15c548","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1430,"y":500,"wires":[]},{"id":"5ae59770.ecac38","type":"function","z":"dd23e5d5.15c548","name":"temp_85e65","func":"msg.topic = \"D-Temp3\"\npayload = msg.payload.temperature;\nmsg.payload = payload;\nreturn msg;","outputs":1,"noerr":0,"x":982,"y":580,"wires":[["42606179.1961d8"]]},{"id":"898eac8b.3eddf8","type":"function","z":"dd23e5d5.15c548","name":"temp_8b38d","func":"msg.topic = \"E-Temp4\"\npayload = msg.payload.temperature;\nmsg.payload = payload;\nreturn msg;","outputs":1,"noerr":0,"x":983,"y":620,"wires":[["42606179.1961d8"]]},{"id":"21d7a969.641c6e","type":"ds18b20","z":"dd23e5d5.15c548","name":"","sensorid":"28-3c01d075948c","timer":"0.1","x":210,"y":460,"wires":[["d75f132e.9cd8e","71465659.3913a","96c31caf.d53848"]]},{"id":"91a79919.85518","type":"ds18b20","z":"dd23e5d5.15c548","name":"","sensorid":"28-3c01d075272c","timer":"0.1","x":210,"y":520,"wires":[["b6ddfbdf.97f4e8","58efe0b7.8cdfa","24db0593.bad732"]]},{"id":"f538a21b.6c7fb8","type":"ds18b20","z":"dd23e5d5.15c548","name":"","sensorid":"28-3c01d075a042","timer":"0.1","x":210,"y":580,"wires":[["c2542312.e7c9c8","f92372e3.6c567","5ae59770.ecac38"]]},{"id":"a3f1689d.c6255","type":"ds18b20","z":"dd23e5d5.15c548","name":"","sensorid":"28-3c01d075d4dd","timer":"0.1","x":210,"y":700,"wires":[["c389690.a122418","53f93d96.b06bc4","898eac8b.3eddf8"]]},{"id":"5bc5f00a.deb918","type":"influxdb","hostname":"192.168.1.105","port":"8086","protocol":"http","database":"temp_logger","name":"Data Storage Sensor ","usetls":false,"tls":"","influxdbVersion":"1.x","url":"http://localhost:8086","rejectUnauthorized":true}]
```
---
### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [30 March 2021 16:23 UTC](https://discourse.nodered.org/t/ds18b20-to-influxdb-and-csv/43394/2 "2021-03-30T16:23:05Z")
Just the flow probably doesn't really help us understand here. A screenshot of your flow and a description and/or screenshot of the incorrect data may help.
---
### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [30 March 2021 16:37 UTC](https://discourse.nodered.org/t/ds18b20-to-influxdb-and-csv/43394/3 "2021-03-30T16:37:04Z")
What ds18b20 contrib node are you using? node-red-cintrib-???????
What is coming out of the `debug` node after the `join` node?
If the ds18b20 node returns the id of the device, you could combine the function nodes into one.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [29 May 2021 16:37 UTC](https://discourse.nodered.org/t/ds18b20-to-influxdb-and-csv/43394/4 "2021-05-29T16:37:59Z")
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