Powerful, energy-efficient STM32F7 microcontroller with WiFi, BLE, 216MHz, 16MB RAM, 32MB Flash, 2D graphics and JPEG acceleration.Tons of GPIO, PWM, I2C, SPI, CAN, UART and more. Solar power ready with integrated LiPo battery charger.
https://blog.adafruit.com/2019/11/01/fe ... rnesslabs/
Pre sale price of $50 USD is cheaper than Pyboard D , with significantly more memory.
https://store.wildernesslabs.co/products/meadow-f7