Raspberry Pi announces $4 microcontroller The Pico chip is available now for pairing with Raspberry Pi mini computers. Listen - 01:14 The Raspberry Pi Pico. Raspberry Pi Raspberry Pi on Thursday announced the launch of its first microcontroller product. The $4 Raspberry Pi Pico is powered by a new chip developed by the company. The 7x7mm chip has 40nm silicon with a dual-core Arm Cortex-M0 processor. Raspberry Pi has sold over 37 million products to date. Its mini computers cost just $35, but sometimes need to be paired with a microcontroller. Until now, Raspberry Pi hadn't developed its own. Editors' top picks Dual-core Arm Cortex-M0+ @ 133MHz