Go Down

Topic: Where to begin and what is what? (Read 2574 times) previous topic - next topic


Hay all.
I have bought a Arduino Uno but is still waiting for it. Will get it tomorrow. I want to know from all of you is where to begin. I have no knowledge of anything about pc programming, code, and so on. I have been playing with rc stuff and converted rc servos to work with encoders but that is it. Can someone please explain how to start with all this and give me a layout off what is what?
I have the following.
1 Arduino Uno (In post...)
2 A thing that has "Betemcu.cn" written on it with a usb port on the other side of the wire.
3 2x  of this product  "Double H driver module uses ST L298N dual full-bridge driver, an integrated monolithic circuit in a 15- lead Multi watt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the connection of an external sensing resistor. An additional supply input is provided so that the logic works at a lower voltage."

I am a total noob so please help. My hopes are to drive dc motors with position control via a rotary encoder and control 2x stepper motors.
Sorry for being stupid, but I must begin somewhere.


Hey, welcome to the addiction.  :-)  Sorry, this is kind of a late reply.

Download the Arduino software if you haven't yet.  Get used to the IDE, and check out the example sketches.  Don't aim too high at first, or else you'll most likely get frustrated.  Your first few experiments should be on the order of getting an LED to blink.

There are dozens of great first-day-with-Arduino tutorials online.  I recommend the Adafruit tutorials.  Have you done any programming before?  How are you with electronics?

I would guess your device #2 is an ICSP programmer, but I would need more info to be sure.  ICSP is used to program raw chips if you ever decide to breadboard unprogrammed AVR microprocessors (e.g., taking the CPU chip off the Uno board, that is.)  That's a little more advanced, and not strictly necessary since the Uno board gives you a way to talk to the AVR chip via USB.  But, if you get into this and start making your own standalone circuits, you'll use it a lot.

BTW, in case you're not aware already, Atmel makes the AVR line of microprocessors.  "AVR" is the family, kind of like an Intel Core i7 is an "x86" family CPU.  There are 8-bit and 32-bit AVRs, just like there are 32-bit (x86) and 64-bit (x64 or x86-64) Intel and AMD CPUs.  In the 8-bit AVR family, there are ATtiny and ATmega lines.  The Tinys are smaller and more limited, but still fairly powerful.  The Megas have more hardware features -- I/O pins, hardware serial UARTs, more memory, etc.  They're all based on a similar core architecture and share more similarities than differences.

Arduino is a project to provide a starter kit environment of hardware and software to make AVR programming easier.  It's based on C/C++, uses completely standard syntax, but hides some of the housekeeping chores from you so you can focus on rapid development.  It's very powerful, while still being more user-friendly than traditional microprocessor development.  But, if you ever want to get closer to the hardware, you can download AVR Studio and code in plain vanilla C, C++, or ASM as well, without everything you've learned being wasted effort.

As for hardware, the Uno uses the ATmega 328P chip specifically, which is one of the middle-range 8-bit AVRs.  Other common Arduino-land micros are (from least powerful to most) the ATmega 8A, ATmega 168, and ATmega 2560.

The H-bridge is your motor driver.  The AVR chip itself is not capable of high-current output, so connecting a motor directly to the output pins will lead to broken hardware and sadness.  The H-bridge takes low-level control signals from the Uno and drives your power-hungry devices off a more capable power supply.

So that should clear up some initial stuff.  Feel free to ask when you have more specific questions.  This is a very friendly and helpful forum, so don't feel under-qualified to be here.  As long as you make an honest effort, the members here will go to lengths to help you out.


Just look on the website:
For reference: http://arduino.cc/en/Reference/HomePage
For tutorials: http://arduino.cc/en/Tutorial/HomePage

Also this (http://playground.arduino.cc/uploads/Main/arduino_notebook_v1-1.pdf) notebook really helped me when I started Arduino.

Oh yes, and as SirNickity said, Arduino is an addiction :).
Good luck,


yeah,i agree,This is a very friendly and helpful forum, so don't feel under-qualified to be here.thanks

Andries Steketee

Hello Sledge 21 and all the others...

Also this (http://playground.arduino.cc/uploads/Main/arduino_notebook_v1-1.pdf) notebook really helped me when I started Arduino.

I wish someone pointed me out on the notebook.pdf but it happened now thanks for that Jared.


Go Up