TOP Contributors

  1. MIKROE (2784 codes)
  2. Alcides Ramos (404 codes)
  3. Shawon Shahryiar (307 codes)
  4. jm_palomino (133 codes)
  5. Bugz Bensce (97 codes)
  6. S P (73 codes)
  7. dany (71 codes)
  8. MikroBUS.NET Team (35 codes)
  9. NART SCHINACKOW (34 codes)
  10. Armstrong Subero (27 codes)

Most Downloaded

  1. Timer Calculator (141111 times)
  2. FAT32 Library (73901 times)
  3. Network Ethernet Library (58554 times)
  4. USB Device Library (48724 times)
  5. Network WiFi Library (44376 times)
  6. FT800 Library (43976 times)
  7. GSM click (30721 times)
  8. mikroSDK (29478 times)
  9. PID Library (27299 times)
  10. microSD click (27101 times)
Libstock prefers package manager

Package Manager

We strongly encourage users to use Package manager for sharing their code on Libstock website, because it boosts your efficiency and leaves the end user with no room for error. [more info]

< Back
Project

DHT21 and DHT22 Sensor Demos with AVR's Interrupt and Timer

Rating:

0

Author: Shawon Shahryiar

Last Updated: 2016-07-06

Package Version: 1.0.0.0

Category: Measurement

Downloaded: 1190 times

Not followed.

License: MIT license  

These are demos of DHT21 and DHT22 relative humidity-temperature sensors using interrupt and timer of an AVR micro. Interrupt + timer based method don't block program sequence unlike polling methods and so the CPU can do other tasks. Falling edge interrupt is used to detect the output from the sensor and a timer detects pulse widths.

No Abuse Reported

Do you want to subscribe in order to receive notifications regarding "DHT21 and DHT22 Sensor Demos with AVR's Interrupt and Timer" changes.

Do you want to unsubscribe in order to stop receiving notifications regarding "DHT21 and DHT22 Sensor Demos with AVR's Interrupt and Timer" changes.

Do you want to report abuse regarding "DHT21 and DHT22 Sensor Demos with AVR's Interrupt and Timer".

  • Information
  • Comments (0)
DOWNLOAD LINK RELATED COMPILER CONTAINS
mikroC PRO for AVR
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

Non-Polling DHT21 Sensor Demo

DHT21 Sensor Demo with AVR's Interrupt and Timer

Watch on YouTube

Non-Polling DHT22 Sensor Demo

DHT22 Sensor Demo with AVR's Interrupt and Timer

Watch on YouTube
Project Setup

Project Setup

DHT21 Sensor Demo with AVR's Interrupt and Timer

View full image
DHT21 Sensor

DHT21 Sensor

DHT21 Sensor Demo with AVR's Interrupt and Timer

View full image
Project Setup

Project Setup

DHT22 Sensor Demo with AVR's Interrupt and Timer

View full image
DHT22 and Display

DHT22 and Display

DHT22 Sensor Demo with AVR's Interrupt and Timer

View full image

ALSO FROM THIS AUTHOR

Short Range IR RangeFinder

0

Short Range IR Rangefinder with Sharp GP2Y0A41SK0F and PIC16F1503. The code is written with CCS PIC C Compiler. https://www.youtube.com/watch?v=AA7QWoFU4N4

[Learn More]

Sparkfun's Blackberry Trackball Demo with Arduino

0

Sparkfun's Blackberry Trackball Demo with Arduino. https://www.youtube.com/watch?v=LjvSnKSQ_gM

[Learn More]

HC-SR04 Ultrasonic Rangefinder with Timer and Interrupt

0

INT0 pin is gated with timer 0. TMR0 starts when INT0 pin is high (start of the echo pulse from HC-SR04) and is read when INT0 pin is low (invoked by the falling edge interrupt caused by the end of echo from HC-SR04). Thus we get pulse width in microseconds. 16 such time samples are taken to make the measurements accurate.

[Learn More]