Iteaduino Tiny

Overview

Iteaduino Tiny is a mini development board based on Attiny85-20 master, which is cheap, compact and easy to use with low power consumption. The mainboard is a derivative board with reference to digispark design, and it supports use of specific Arduino IDE and uses Arduino syntax for programming which is quite convenient.

Go shopping Iteaduino Tiny (SKU:IM130615003)

Features

Support for the Arduino IDE 1.0+ (Windows)
Power via USB
Built-in USB
4 I/O Pins
8k Flash Memory (about 6k after bootloader)
I2C and SPI (vis USI) Note:also supports for serial port communication
PWM on 3 pins (more possible with Software PWM)
ADC on 4 pins
Power LED and Test/Status LED

Spec

Microcontroller	ATtiny85-20
Operating Voltage	5V
Digital IO pins	PB0, PB1, PB2, PB5
Analog Input pins(ADC)	PB2
Indicator	D1(PB1), PWR
DC Output current on per IO lines	40mA
Flash Memory	8 KB of which 2 KB used by bootloader
SRAM	512B
EEPROM	512B
Clock frequency	16 MHz
Dimension	24.89X12.7X1.6mm

Hardware

Pin Map

ISP Pin	Index of Digital Pin	Name of Attiny85
MISO	D1	PB1(MISO/DO/AIN1/OC0B/OC1A/PCINT1)
VCC	-	-
SCK	D2	PB2(SCK/USCK/SCL/ADC1/T0/INT0/PCINT2)
MOSI	D0	PB0（MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0）
RST#	D5	PB5(PCINT5/RESET/ADC0/dW)
GND	-	-

Software

Let’s take Windows7 operating system as an example, before we use Iteaduino Tiny, we need to install driver for it. First, download the modified Arduino IDE offered by Digispart in the following address: http://sourceforge.net/projects/digistump/files/.

We included Digispart USB driver files in the document, so we can execute the driver file (DigisparkArduino-Win32->DigisparkWindowsDriver->InstallDriver.exe)to install the driver in the system. Keep clicking "Next" till installation of the USB device is completed.

When Iteaduino Tiny is connected to a computer via USB at the first time, the system will find the new device and display installing Digispart bootloader,

Next, you can run DigisparkArduino-Win32Digispark-Arduino-1.0.4arduino.exe, open the modified Arduino IDE, where we can write and compile our codes. During downloading, you need to select the board type, browse and select Tool> Board> Digispark (Tiny Core) in sequence. Then choose Tools> programmer> Digispark.

Because there is no reset pin on Tinny85, before pressing the "upload" button to download codes onto Iteaduino Tiny, you need to unplug the USB cable on Iteaduino Tiny first to disconnect the USB connection. Then, press the "upload" button, after ‘Plug in device now…’ is displayed on IDE window, reconnect the USB cable, and then IDE will download the compiled data onto Iteaduino Tiny. For details about operating procedures, please refer to user manual for Iteaduino Tiny.