Basic Arduino Boards

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Basic Arduino Boards

Postby Tim Laren » Thu May 30, 2013 1:45 pm

Well lets start off with the basic boards. There are hundreds of other boards but I will just cover a few of the most common.

First is the UNO.
Image
Summary
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega328) of which 0.5 KB used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz
This is the most common starter board. It is modeled after the original Duemilanove that is now obsolete. There are many Shields that can attach to the board. It has enough I/O and Memory for Starter's Projects.

Next, I guess is the NANO. The Nano is a UNO but way smaller with all the features.
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Specifications:
Microcontroller Atmel ATmega168 or ATmega328
Operating Voltage (logic level) 5 V
Input Voltage (recommended) 7-12 V
Input Voltage (limits) 6-20 V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 8
DC Current per I/O Pin 40 mA
Flash Memory 16 KB (ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloader
SRAM 1 KB (ATmega168) or 2 KB (ATmega328)
EEPROM 512 bytes (ATmega168) or 1 KB (ATmega328)
Clock Speed 16 MHz
Dimensions 0.73" x 1.70"
Same as the UNO but smaller and you can plug it into a breadboard.

I'd say the MEGA2560 is the next on the list. It has lots more everything.
Image
Summary
Microcontroller ATmega2560
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 54 (of which 15 provide PWM output)
Analog Input Pins 16
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 256 KB of which 8 KB used by bootloader
SRAM 8 KB
EEPROM 4 KB
Clock Speed 16 MHz

For the big project, 256K Flash for your programs, 54 I/O, 4 Serial Ports, 16 Analog pins.

I guess last board for this article is the ProMini
Image
Summary
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage 5 - 12 V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
Flash Memory 32 KB (of which 512 used by bootloader)
SRAM 1 KB
EEPROM 512 bytes
Clock Speed 16 MHz (5V model)

The main difference with this is there is no USB interface. It is great for embedded projects. Postage stamp size, I mean real small.

I guess there is one more, not a board but, well very low cost. I call it the No-Druino.
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If you have an UNO that is socketed, you can get a bare ATMEGA328 chip and plug it into your UNO, program it, then take it out and plug it into your breadboard. You will need a crystal and two caps, I will go over that in a later article.

Just some basic info. More later as we get to use these boards.
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Tim Laren
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Re: Basic Arduino Boards

Postby EAWF » Thu Apr 14, 2016 6:29 pm

I'd suggest also, for small projects with very minimal code, such as a stoplight project, the ATTiny...programmable with either the Uno OR by a special USB programmer board.
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