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by: Oct 28,2022 1627 Views 0 Comments Posted in Engineering Technical

Microcontroller Boards Wi-Fi ESP32 Crowdfunding Project

As an ESP32 with form factor of Raspberry Pi 4, EsPiFF can fit into almost all Pi 4 enclosure and HAT. EsPiFF features wired and wireless Ethernet, SD card sockets and RP 2040 coprocessor. Hence, EsPiFF is a very practical low-power Pi alternative.

Besides, EsPiFF is particularly suitable for measurement, control and automation projects. Because in these projects, current consumption and heat generation of Pi (or the potential instability of its SD card) are likely to be problematic.

Features & Specifications

  • ESP32-WROVER with 8 MB PSRAM and 16 MB Flash in a Raspberry Pi 4 form factor
  • Wi-Fi connectivity (requires an external U.FL antenna)
  • 10/100 wired Ethernet via IP101 PHY
  • PoE header, to use Raspberry Pi PoE HATs. EsPiFF can be powered from a HAT or can power the HAT
  • Micro SD card socket for storage
  • Up to 3 UARTs
  • USB Type-C connector on CH340 USB-UART for programming as well as power draw up to 5 V / 3 A for power-hungry HATs
  • 40-pin Rasperry Pi header, compatible with all Raspberry Pi HATs
  • 2 kbytes of fast FRAM for permanent storage of process data. (Much faster then EEPROM, for key variables.)
  • RP2040 co-processor to emulate the Pi on the 40 pin connector, with 8 MB Flash
  • External realtime clock, watchdog, and supervisor for high-availability, 24/7 applications
  • On-board supercap to keep the realtime clock running for days, even without power. The supercap has, in contrast to a battery, a practically infinite lifetime
  • USB-Host on the USB Type-A connector
  • BOOT button for the RP2040, to switch between USB-Programming and USB-Host/Device
  • ESP32 reset button and three user LEDs

This project is going to crowdfund in CrowdSupply, check here for more info and support it if you are interested.

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