uPesy ESP32 Boards

(Updated at 11/29/2022)

The ESP32 is one of the most powerful and complete microcontrollers commonly used in the DIY and makers world.

It has everything a classic microcontroller has: GPIO, PWM, Timer, ADC, DAC, I2C, SPI, PWM, and SD with WiFi and Bluetooth and a low power mode.

Here is a comparison of the different uPesy boards based on an ESP32:

uPesy ESP32 Boards comparison
	ESP32 Wroom Devkit	ESP32 Wrover Devkit	ESP32 Wroom Low Power

Usage	Multipurpose (basic model)	WEB server, handling large files (home automation server)	To consume very low energy with a battery in Deep Sleep (connected sensors)
ESP32 Module	ESP32 WROOM	ESP32 WROVER	ESP32 WROOM
Internal RAM	520 Ko (328 Ko usable)	520 Ko (328 Ko usable)	520 Ko (328 Ko usable)
External RAM	No	Yes → 4Mo	No
Flash Size	4Mo	4Mo	4Mo
Usable Pins	32/32	30/32	31/32
Power Path for Deep Sleep	0	0	2
Deep Sleep Consumption (4.2V)	<1.5 mA	<1.5 mA	<15 µA
USB connector	USB C	USB C	USB C
Breadboard compatibility	Yes	Yes	Yes
Board size (without connectors)	27.5mm x 58mm x 5mm	27.5mm x 58mm x 5mm	27.5mm x 58mm x 5mm
Battery support	No	No	Yes, with a builtin LiPo charger
Blue LED connected to GPIO2	Yes	Yes	No

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