MQ-135 Air Quality/Pollution Sensor – Arduino Compatible
₦ 3,000
The MQ-135 air quality and pollution sensor detects hazardous gases such as benzene, alcohol, smoke, CO2, NH3 and NOx(Nitrous Oxides) in the air. Analog out put can be interfaced directly to ADC of a microcontroller.
5V Operation.
High sensitivity and response time.
Sample Applications: This sensor can be used to build air quality sensing devices for indoor and outdoor applications)
DS18B20 Waterproof Temperature Sensor – Arduino Compatible
₦ 2,000
The DS18B20 allows you take temperature readings in water or oils within its specified temperature range.
DS18B20 Technical specs:
Usable temperature range: -55 to 125°C (-67°F to +257°F)
9 to 12 bit selectable resolution
Uses 1-Wire interface- requires only one digital pin for communication
Unique 64 bit ID burned into chip
Multiple sensors can share one pin
±0.5°C Accuracy from -10°C to +85°C
Temperature-limit alarm system
Query time is less than 750ms
Usable with 3.0V to 5.5V power/data
Work with Arduino IDE on ESP8266 Wifi module to take temperature readings over the Internet: //iot-playground.com/blog/2-uncategorised/41-esp8266-ds18b20-temperature-sensor-arduino-ide
The Arduino Uno R3 is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip.
Additional features coming with the R3 version are:
ATmega16U2 instead 8U2 as USB-to-Serial converter.
1.0 pinout: added SDA and SCL pins for TWI communication placed near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board and the second one is a not connected pin, that is reserved for future purposes.
stronger RESET circuit.
“Uno” means “One” in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno and version 1.0 will be the reference versions of Arduino, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform.
This module allows you to add Ethernet connectivity to your projects. Based on the popular Microchip’s ENC28J60, this module will easily interface with any Microcontroller or Arduino board allowing Internet Connectivity via the Ethernet..
This 20 X 4 LCD Module allows you to fit in a lot more text than you can on the smaller 16X4. It is however fully compatible. It has the industry standard HD44780 LCD controller.
20X4 Characters
5V Operating voltage
Fully pin and code compatible with 16X2, 16X1 LCDs
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