The M5Stack Stamp-P4 is a low-cost processor board, just 30 x 22 mm, based on Espressif’s ESP32-P4 chip. This features a dual-core 400 MHz RISC-V processor (running at 360 MHz on this board), with 16 Mbytes of flash and 768 KB of on-chip SRAM. It also has 32 Mbytes of PSRAM:
Despite its compact size, the Stamp-P4 is currently one of the fastest platforms for running uLisp, running the Tak benchmark in just 1.4 secs.
The Stamp-P4 can take two 10-way 0.1" headers, which will give access to a subset of the I/O pins on a standard solderless breadboard. Alternatively, intermediate connections are also provided with a 0.05" pitch, allowing you to solder the Stamp-P4 onto a PCB and access a fuller set of I/O pins available from the ESP32-P4. The pins are labelled on the reverse of the board.
In addition there are two connectors on the board, for connection to the MIPI CSI and SDIO connections. Unlike other ESP32 processors the ESP32-P4 has no Wi-Fi capabilities, but the SDIO connector allows you to fit the Stamp-AddOn C6 For P4 which adds an ESP32-C6-MINI-1-N4 to provide Wi-Fi.
For more information about running uLisp see: M5Stack Stamp-P4.
It’s available from M5Stack at: M5Stack Stamp-P4.
Or in the UK from The Pi-Hut at: M5Stack Stamp-P4.