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ITEMS DESCRIPTION
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.
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)
– 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
VCC – –
SCK D2 PB2
MOSI D0 PB0
RST# D5 PB5
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.
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.
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