# Dht-11 sensor issues
**URL:** https://forum.xod.io/t/dht-11-sensor-issues/5208
**Category:** Uncategorized
**Created:** [May 25, 2021, 1:36am UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208 "2021-05-25T01:36:19Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@projie](https://forum.xod.io/u/projie)
#### Post date: [May 25, 2021, 1:36am UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/1 "2021-05-25T01:36:20Z")
elo xoders i have a small issue with this sensor , this might be rhetorical for some , i have dht-11 sensor node connected up to 16x2 lcd 2ic lcd , cant get it to read all i get is an error on the lcd , does the sensor need to be connected to a PWm out put ? , the lcd does work as i have other info displaying on
lcd , how come the dht-11 sensor can measure temp and humidity , but only has one pin for feed back , tho the dht-11 node can out đput two readings to the lcd , temp and humidity , or is this a case of i have down load a dht-11 library to the arduino ide ?
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### Author:  [@san43](https://forum.xod.io/u/san43)
#### Post date: [May 25, 2021, 1:44pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/2 "2021-05-25T13:44:40Z")
It sounds like you might be using the dht11-device node rather than the dht11-hygrometer node? The dht11-hygrometer node combines the dht11-device node with other required nodes to give you temp and humidity readings.
Thereâs an example in the [library](https://xod.io/libs/xod-dev/dht/) called dht11-example - try running that first.
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### Author:  [@projie](https://forum.xod.io/u/projie)
#### Post date: [May 25, 2021, 11:21pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/3 "2021-05-25T23:21:34Z")
thank , you i tried the dht11-hygrometer node stil same result , found an earlyer blog on here , using a clock node to limit the amounts of reads , done that stil with the same result , what port is the correct port to use ?
, i used port 7 , this is a normal i/o port cant see how this can give a linear reading from a variable sensor , im thinking it should be on an analog port , but if you look on the examples they connect it to a normal I/O port
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### Author:  [@balogh](https://forum.xod.io/u/balogh)
#### Post date: [May 26, 2021, 5:46am UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/4 "2021-05-26T05:46:12Z")
Most probably, you are trying to read the sensor data too quickly. According to my experience, single reading per 2 - 3 seconds is the maximum. Otherwise the sensor returns âERRâ reading.
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### Author:  [@san43](https://forum.xod.io/u/san43)
#### Post date: [May 27, 2021, 2:38pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/5 "2021-05-27T14:38:20Z")
I used D3 which is a PWM port - might help?
And yes - I did find continuous readings giving an error. I used a clock with 1sec timing and that worked for me.
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### Author:  [@gweimer](https://forum.xod.io/u/gweimer)
#### Post date: [May 27, 2021, 5:25pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/6 "2021-05-27T17:25:10Z")
PWM is for output, so shouldnât make any difference if pin supports PWM if you are using it as an input pin.
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### Author:  [@projie](https://forum.xod.io/u/projie)
#### Post date: [May 27, 2021, 10:13pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/7 "2021-05-27T22:13:29Z")
thank you xoders â got it working , believe it or not , both sensors i had were faulty , went down to the local electronic store got new one worked first time , on another note were can i get a node for a 2IC temp and humidity sensor ?
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### Author:  [@san43](https://forum.xod.io/u/san43)
#### Post date: [June 3, 2021, 3:10pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/8 "2021-06-03T15:10:39Z")
[https://forum.xod.io/t/gy-bmp280-temperature-humidity-and-pressure-senzor/3220/4?u=san43](https://forum.xod.io/t/gy-bmp280-temperature-humidity-and-pressure-senzor/3220/4)
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### Author:  [@projie](https://forum.xod.io/u/projie)
#### Post date: [June 6, 2021, 9:34pm UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/9 "2021-06-06T21:34:19Z")
thank u san43 â got the note for the bmp280 , on the done it does not show an an i2c address , you recon add this in the C+ program of the node or change it ?
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### Author:  [@san43](https://forum.xod.io/u/san43)
#### Post date: [June 29, 2021, 8:43am UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/10 "2021-06-29T08:43:59Z")
I think the I2C address is defined in the Arduino library that this node is built around. If you go into the nodesâs code youâll see that the first lines are:
// Tell XOD where it could download the library:
#pragma XOD require â[GitHub - adafruit/Adafruit\_Sensor: Common sensor library](https://github.com/adafruit/Adafruit_Sensor)â
#pragma XOD require â[GitHub - adafruit/Adafruit\_BMP280\_Library: Arduino Library for BMP280 sensors](https://github.com/adafruit/Adafruit_BMP280_Library)â
if you look at the .h file in the Adafruit library you will see that it defines the I2C address:
\*I2C ADDRESS/BITS/SETTINGS
_/
#define BMP280\_ADDRESS (0x77) /_ \*\
### Author:  [@system](https://forum.xod.io/u/system)
#### Post date: [July 29, 2021, 8:44am UTC](https://forum.xod.io/t/dht-11-sensor-issues/5208/11 "2021-07-29T08:44:02Z")
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