The smallest esp32 module (so far…)

luca 04/06/2018 0

Some months ago, Espressif announced the production of a new chip, named ESP32-PICO-D4.

esp-pico-001

It’s a complete SiP (System in Package), that is a chip which integrates the esp32 microcontroller, a 4Mbit flash memory, a crystal oscillator, filter capacitors and RF matching links. The chip datasheet is available on the official website.

Using this chip, it’s possible to create very small modules. I recently received one of those from Aliexpress:

esp-pico-002

esp-pico-003

To better understand how small it is, let’s compare its size with a “classic” ESP-WROOM-32 module and with a 1 euro coin:

esp-pico-004

The module includes a chip antenna; it’s also possible to connect an external antenna thanks to the presence of an I-PEX connector.

In conclusion, the availability of the ESP32-PICO-D4 SiP makes it possible to use the esp32 chip in applications where the available space is very small…

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