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Showing results for tags 'dht11'.
Found 9 results
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I have been trying to interface DHT11 sensor with MSP430G2553. But I always end up getting a checksum error. I have attched the code and the library I am using. My sensor is the normal one with 4 pins coming out of it. I connect pin1 to Vcc(3.3V), pin2 to data pin(P1_3) and pin4 to GND. Please help. #include <dht.h> dht DHT; #define DHT11_PIN 5 void setup() { Serial.begin(9600); Serial.println("DHT TEST PROGRAM "); Serial.print("LIBRARY VERSION: "); Serial.println(DHT_LIB_VERSION); Serial.println(); Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)"); }
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Hi all i'm programming by MSP430fr5739 a temperature and humidity reading by the DHT11 sensor. ?The wire are correct, and so the problem is'nt in the link, it is in the code. This is my code, usind the dht11 library, find on internet. ?The main problem is that i don't know how to read the value of T and H, and maybe there is some problems in the reading (probably in the interrupt) ?Thanks for the advice. ?MAIN CODE: #include <msp430.h> #include <DHT11_LIB.h> unsigned char RH_byte1; unsigned char RH_byte2; unsigned char T_byte1; unsigned char T_byte2; unsigned char checksum;
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Hello everyone, I just started programming in C ++ to solve a small university project. I am a newbie in programming that's why I ask you a hand in writing the code. I'm working with Msp430fr5739 and the temperature and humidity sensor is the DHT11. The connections have already been made and we have to write the code. I already have the library DHT11 and I'm working in CCS. Can someone share a code that works and allows me to read the values of temperature and humidity? Thank you (and sorry for my english)
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A library for reading dht sensors (temperature and humidity). Since dht sensors are pretty slow, I have used highlevel functions in the lib, there should be plenty of cycles even at 1MHz, but I have only tested it on the CC3200 sofar. Easy example, other functions are available for getting the raw values instead of float. if (dht::readFloatData(2, &temperature, &humidity, true) == 0) { Serial.print("T: "); Serial.print(temperature); Serial.print(" H: "); Serial.println(humidity); } Zip file included, source code lives at https://github.com/MORA99/Stoke -
Hi All, Somehow I've made a stupid mistake with this weather thingie I put together and I can't figure out what's wrong. I need your help! Project description: Weather thingie - Reports temperature, humidity and light readings via bluetooth. Operation is simple, connect to the device and it will report something like "27 C 57 H 96 L\r\n" ~ every second. The LED on board will alternate state every second. I set this up on a breadboard before making the PCB as I was not familiar with the DHT11 or and quirky requirements it might have. The project worked fine on the breadboard. I su
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Hi all, I am facing problem while reading DHT values in timer ISR function. I am able to get the data if use i dht.readHumidity() (using dht library) in loop function but not able to get when i use in timer ISR function. Can anyone please help me out. Thanks in Advance.
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Hey guys, I am trying to work with this library: http://forum.43oh.com/topic/2239-solved-dht22-temp-rh-one-wire-sensor-on-energia/?p=19474 To my knowledge, everything is configured correctly. I have confirmed that the device does work fine on an Arduino Uno with this resistor, 10k. I have also confirmed that it works with a 4.7k. It also works with both 3.3v and 5v. However, on the MSP430, using the above library (stock) the values I am getting are very wrong, for example: debug bits received 40 debug 27, 0, 11, 0, 38 =? 38 debug checksum ok debug RH% 9984 debug oC 4352 RH
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Hello, sorry I'm totally beginner working with Stellaris less than a week so probably those questions will be silly but: I saw a project "Using Stellaris LaunchPad as a Thermometer" I wonder is it possible (and if yes how ?) to port to Energia ? Is there any ready library for DHT11 working with LM4F120 ? I saw this only for MSP430. Thank You Mic
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Using the DHT Lib and an LCD I am about to get correct values to display on the LCD for between 2 seconds and 10 seconds, then the characters disappear. In the DHT library I had to change return NAN to either return 0 or return ERR to get it to work. I also had to change cli() and sei() to noInterrupts() and interrupts() respectively. I am controlling the contrast on the LCD using PWM fed through a capacitor. I am using the MSP430g2452 chip in a Rev 1.5 Launchpad. (I am at work at the moment, or I would post all the code.) My question is pretty simple: In setup(), I ha
