The technical difference between Nano and Mega is shown below. Arduino Mega is normally used for projects which require a lot of I/O pins and different communication protocols. As you might guess, the size is also bigger than an Arduino UNO. Arduino Mega is more powerful than an Arduino Nano in terms of speed and number of I/O pins. There is a considerable amount of difference between the Arduino Nano and the Arduino mega as the processor used itself is different. The technical difference between Uno and Nano is shown below:ĭifference between Arduino Nano and Arduino Mega To program an Uno, you need a Regular USB cable whereas for Nano, you will need a mini USB cable. Also, Nano is breadboard friendly while Uno is not. UNO is twice as big as Nano and hence occupies more space on your project. One big difference between both is the size. They use the same Processor (Atmega328p) and hence they both can share the same program. The Arduino Nano is very much similar to the Arduino UNO. Raspberry Pi, PIC Development Board, AVR Development Board, MSP430 Launchpad, TEENSY 3.6 Development Board, Intel Edison, ESP32, STM32F103C8T6 - Blue Pill Development Board, NodeMCU ESP8266ĭifference between Arduino UNO and Arduino Nano
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To provide a reference voltage for input voltage.ĪTmega328P – 8-bit AVR family microcontrollerĪrduino UNO, Arduino Pro Mini, Arduino Mega, Arduino Due, Arduino MKR1000 Wi-Fi Board, Arduino Leonardo
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Used to receive and transmit TTL serial data.ġ0 (SS), 11 (MOSI), 12 (MISO) and 13 (SCK) Used to measure analog voltage in the range of 0-5VĬan be used as input or output pins. Vin: Input voltage to Arduino when using an external power source (6-12V).ĥV: Regulated power supply used to power microcontroller and other components on the board.ģ.3V: 3.3V supply generated by on-board voltage regulator. OMR systems are suited to reading pre-printed forms and check boxes such as lottery number selection sheets and multiple choice exam papers.The Arduino Nano is another popular Arduino development board very much similar to the Arduino UNO. Optical Mark Reader (OMR)Īn OMR reads marks made by pencil on a printed form into the computer. The ink is magnetised, this makes it immune to creases and dirty marks. A particular font is used that makes it easy for the machine to discriminate between characters. Banks use MICR to read the numbers from the bottom of cheques to obtain data such as account numbers and bank sort codes. Magnetic ink characters appear at the bottom of cheques.
Data stored on the strip is scanned and input into a computer system by a magnetic stripe reader. The magnetic strip on the back of the card can hold the personal details of the card owner and, with the necessary PIN, will allow access to secure information, eg bank account details. Magnetic stripes are built into many plastic cards such as debit or credit cards and personal identity cards. The scanning process also assists in stock management, reducing the stock by one each time a product is scanned/sold. This information later appears on your receipt.
When read, information stored in the shop's database is recalled, such as the product name and price. Barcodes are printed on nearly every product you buy, each product has a unique code. Barcode readerīarcodes are represented by black vertical bars and are read by a barcode reader. The control program decides what to do next based on the data it's fed by the sensors. They collect data continuously and are typically linked to a control program that specifies acceptable levels, eg the minimum and maximum temperature in a greenhouse. Sensors are often used as part of a feedback cycle.