Showing entries with tag "Espressif".

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Comparison table for ESP boards

Simplified table of ESP boards with components I care about.

ESP8266 ESP32 ESP32-S2 ESP32-S3 ESP32-C3
GPIO 17 34 43 45 22
CPU 1x @ 160Mhz 2x @ 240Mhz 1x @ 240Mhz 2x @ 240Mhz 1x @ 160Mhz
Architecture Tensilica Tensilica Tensilica Tensilica RISC-V
RAM 160K 520K 320K 512K 400K
Touch Pins 0 10 14 14 0
Bluetooth No 4.2 No 5.0 5.0
USB OTG No No Yes Yes No

More details and Espressif product comparison

Note: Assume about eight pins are used internally to connect flash and other peripherals.

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Espressif WiFi MCU cost comparison

Espressif has just released their newest WiFi enabled MCU the ESP32-S2. It's a successor to the ESP8266 and has many improvements. Not only does it have more CPU, more memory, and more GPIO pins it's also cheaper. Just for posterity's sake here is the current cost for of WiFi enabled MCUs.

MCU Cost
ESP8266 $1.60
ESP8285 $1.05
ESP32v1 $3.00
ESP32v3 $1.50
ESP32-S2 $0.99

Updated Prices:

MCU March 2023 December 2023
ESP8266 $1.60 $1.60
ESP8285 $1.20 $1.05
ESP32v1 $3.30 $3.00
ESP32v3 $1.80 $1.50
ESP32-S2 $1.35 $1.25
ESP32-S3 $2.04 $1.85
ESP32-C3 $1.10 $1.00

Note: This is the cost for the bare IC only.

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