M5Stack FIRE IoT Development Kit (PSRAM) V2.7 Brand_Advancer Technologies Control your robot remotely with

Control your robot remotely with this Mini Wifi Dongle

and by measuring the time of ultrasonic pulse reaches the object and back to the transducer

Peep this Flexible Silicone Neon-like Skinny NeoPixel LED Strip

however if you want to use BIG7 on Raspberry Pi 4

M5Stack FIRE IoT Development Kit (PSRAM) V2.7 Brand_Advancer Technologies Control your robot remotely withThe FIRE V2. 7 uses the Espressif ESP32 main control chip, which includes two low power Xtensa 32 bit LX6 microprocessors operating at a high frequency of 240MHz. It comes with 8M PSRAM and 16M Flash memory and integrates various peripherals such as a 2. 0" full colour HD IPS display panel, a 6 axis IMU, LED, microphone, speaker, and SD card slot. Its powerful processing capabilities and stability make it ideal for product prototyping, industrial