Product Details Ⅰ. Compact ATtiny85 development board offers Arduino IDE 1.0+ compatibility for easy programming across OSX, Windows and Linux systems Ⅱ. Flexible power options include USB connection or external source with onboard 5V regulator for stable operation Ⅲ. 6 I/O pins support I2C and SPI communication via USI, with 3 pins featuring PWM and 4 pins for ADC functionality Ⅳ. 8k flash memory (approximately 6k available after bootloader installation) provides sufficient space for project code Specification Ⅰ. Colour: Black Ⅱ. Material: Plastic + Metal Ⅲ. I/O Pins: 6 Ⅳ. Flash Memory: 8k (about 6k after bootloader) Ⅴ. PWM: 3 pins (more possible with Software PWM) Ⅵ. ADC: 4 pins Ⅶ. Connectivity: I2C and SPI (via USI) Ⅷ. Power Options: USB or External Source Ⅸ. Onboard Components: 5V Regulator, USB, Power LED, Test/Status LED Package Contents Ⅰ. 1 x Development board Warm Tips Ⅰ. Light shooting and different displays may cause minor colour variations between product images and actual items Ⅱ. Allowable measurement error is +/- 1-3cm