This board allows Arduino nano I/O to be expanded. It also allows the nano to be powered from a 7-12V dc supply like an Arduino Uno.
FEATURES:
AREF Output: 3.3V
Expand all 6 PWM pins
Expand I2C pins
Compatible only with Arduino NANO
Expand DC power interface
Available pins: +3.3V, +5V, GND, I2C, RX/TX, All other IOs
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MQ-7 Carbon Monoxide Sensor – Arduino Compatible
₦ 4,000
The MQ-7 Carbon Monoxide (CO) gas sensor, allows Carbon monoxide concentrations to be measured. It has a sensitivity of 20ppm-2000ppm. The Output is simply connected to an ADC via a load resistor
5V Operation
Safely measure poisonous CO concentrations
Highly sensitive CO
Easy connection
Highly sensitive
Applications: CO alarm, anti carbon monoxide poisoning system.
This sensor allows you to detect combustible gases in the air. It is capable of detecting flamable gases in concentrations ranging from 300 to 10,000 ppm using only one analog pin from a microcontroller.
5V Operation
Detects any of the following flammable gases
LPG
Butane
Propane
Methane
Alcohol
Hydrogen
Smoke
Example Application: Fire prevention system, Gas leakage detector, Gas concentration detector.
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..
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.
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