MEET THE ATMEGAZERO: AN ATMEGA32U4 WITH A RASPBERRY PI ZERO FORM FACTOR

Arduino and others have produced quite a number of Arduino-compatible boards with small form factors, but most of them are not compatible with standard shields and other platform niceties. Instead, they end up being just breakout boards for the microcontroller. 

TINY OBSIDIANBOA DEV BOARD FEATURES ESPRESSIF SYSTEMS’ ESP32-S2 BOARD

Greg Davill has posted on GitHub an Espressif Systems ESP32 based development board called the ObsidianBoa. Recently Greg Davill had a successful OrangeCrab crowdfunding campaign, he has however directed his attention to the Espressif Systems ESP32

RENESAS INTRODUCES BLUETOOTH LOW ENERGY MODULE FOR ULTRA-LOW POWER IOT APPLICATIONS

New RYZ012 Module Provides Multi-Standard Wireless Communication Supporting Bluetooth Low Energy 5 and IEEE802.15.4 Based Standards