This is an Atmel ATtiny13A. No accessories are included. You can develop programs using the Arduino IDE. These are surplus items from a bulk purchase from a certain country's online store. These are units I set aside for myself, and I have confirmed that they function correctly with an Lチカ (LED blinking program). * Please be sure to read my profile before purchasing, as it contains information about discounts, shipping methods, etc. #ATtiny #Arduino #ElectronicCraft #Programming