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Archive for the ‘DHT11’ Category

We first thought [Alexis Ospitia]’s watch was a sports watch made with an Arduino, but it’s actually a sporty watch made with an Arduino. This explains the watch’s strange ability to tell you the current temperature and humidity.

The core of the watch is an Arduino Mini. To make it good for time telling, a real-time clock module was added. A DHT11 monitors the temperature and humidity. A charge circuit and lithium battery provide power. Finally, the watch displays the date, time, and other data with an LCD from a Nokia 5110. We can tell you the last part that’s going to break on this.

Even if you think the watch is a bit chunky, the tutorial is very slick. [Alexis] has taken the trouble to individually draw and describe each portion of the watch’s construction. He explains each pin, what they do, and provides a Fritzing drawing of the wires to the Arduino. The code is provided; to program the watch a USB-to-serial module must be used.

For the housing he made a box from a thin gauge aluminum sheet and attached leather straps to the assembly. The final construction is cool looking in a techno-punk way, and is fairly compact. One might even say sporty.


Filed under: Arduino Hacks
Mag
22

DIY Temperature & Humidity & Smoke Detector

arduino, ATMEGA2560, DHT11, Gas, Humidity, MQ-2, Sensor, smoke, temperature Commenti disabilitati su DIY Temperature & Humidity & Smoke Detector 

FPTBQC4HV72CMNV.MEDIUM

ICStation @ instructables.com writes:

ICStation team introduce you how to DIY this temperature & humidity & smoke alarm system based on ICStation Mega 2560 compatible with Arduino.The working voltage of this system is DC5V.It can measure the current temperature, humidity and smoke. It can display real-time data by the 1602 LCD and can realize the sound and light alarm when in the dangerous temperature and humidity. It is a simply and easily to operate monitoring alarm system about temperature humidity and smoke.

DIY Temperature & Humidity & Smoke Detector - [Link]

Apr
05

Step-by-step guide for making a very simple temperature and humidity meter

arduino, arduino uno, DHT11, MAX7219 Commenti disabilitati su Step-by-step guide for making a very simple temperature and humidity meter 

CrowduinoUnoTrH3

Raj @ embedded-lab.com

In this blog post, I am providing you step by step instructions to build a very simple temperature and relative humidity meter for indoor use. All you need to build this project are an Arduino Uno or compatible board, a DHT11 sensor, and a MAX7219 based 8-digit serial 7-segment LED display. The temperature is displayed in degree Celsius and relative humidity in percentage.

Step-by-step guide for making a very simple temperature and humidity meter - [Link]

Nov
21

BO.Duino – ATmega328 Arduino Compatible board

arduino, AT24, ATmega328, atmel, BO.Duino, clock, DHT11, DS18B20, LED, microSD, Real-time clock, RGB Commenti disabilitati su BO.Duino – ATmega328 Arduino Compatible board 

handmade_pcb

BO.Duino is an Arduino compatible board based on ATmega328 ATMEL’s mcu. This board features many peripherals usually externally connected on a breadboard or prototyping board such as sensors, SD card etc. Peripherals included are:

- A real-time clock
- AT24 series external memory chip
- MicroSD card adaptor (SPI)
- RGB LED
- A potentiometer on analog input
- Connector for DS18b20 or DHt11 series sensors

BO.Duino – ATmega328 Arduino Compatible board - [Link]



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