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The UNO R4 was created with maximum compatibility in mind and keeps the same physical factor, compatibility with shields, and 5V operating voltage as its predecessor. The Renesas RA4M1 32-bit Cortex-M4 CPU, which powers the UNO R4, significantly increases processing speed, memory capacity, and functionality.
Arduino Uno R4 WiFi - ABX00087
Arduino UNO R4 WiFi Qwiic Connector
SparkFun Arduino UNO R4 WiFi Qwiic Kit from MindKits New Zealand
SparkFun Arduino UNO R4 WiFi Qwiic Kit Hookup Guide - SparkFun Learn
The SparkFun CO2 Humidity and Temperature Sensor - SCD41 (Qwiic) features the SCD40 CO2 from Sensirion. The SCD41 uses Sensirion's PASens photoacoustic measurement system that combines narrow-band IR light and a microphone inside the sensing package capable of detecting concentrations from 0 to 40000 ppm with high accuracy over 400-5000 ppm ±(40 ppm+5%).
SparkFun CO2 Humidity and Temperature Sensor - SCD41 (Qwiic)
SparkFun Arduino UNO R4 WiFi Qwiic Kit Hookup Guide - SparkFun Learn
SparkFun Qwiic Scale - NAU7802 & Qwiic Cable Bundle - Small Breakout Board Read Load Cells accurately No Soldering Polarized Connector On-chip Temperature Sensor Includes Variety of Qwiic Cables : Electronics
SparkFun Arduino UNO R4 WiFi Qwiic Kit, KIT-22641
SparkFun Triple Axis Accelerometer Breakout - BMA400 (Qwiic) - SEN-21208 - SparkFun Electronics
GitHub - sparkfun/SparkFun_Arduino_UNO_R4_Qwiic_Kit
Arduino Launches Its UNO R4 Boards with Surprise Features — Including an LED Matrix
SparkFun Arduino UNO R4 WiFi Qwiic Kit - Opencircuit