DOIT ESP32 DEVKIT V1

Development Board

Code name: ESP32_DEV

DOIT ESP32 DEVKIT V1 is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 4MB flash memory.

About DOIT ESP32 DEVKIT V1

❓ Not sure if this is your board? Or you have a similar clone?

Check out the ESP32 30-Pin Generic Clone Guide - it covers all the common variations and helps you identify which board you actually have!

The DOIT ESP32 DEVKIT V1 is a versatile development board built around the proven Espressif ESP32-WROOM-32 module. It packs dual-core processing power, Wi-Fi 802.11 b/g/n and Bluetooth 4.2 (BR/EDR + BLE) into a slim, breadboard-friendly 30-pin package-perfect for rapid IoT prototyping. 📡

An on-board CP2102 USB-to-UART converter and auto-reset circuitry let you plug in, program, and debug over Micro-USB with zero fuss. 🔌

Power options are flexible: feed the board via VIN (5 V), the Micro-USB port, or tap the regulated 3V3 rail for low-power projects. A high-efficiency LDO keeps everything stable. ⚡️

Development conveniences include a dedicated EN (reset) button 🔁 and a BOOT (IO0) button for easy firmware flashing and download-mode entry. 🚀

With rich peripherals-ADC, DAC, PWM, capacitive-touch, I²C, SPI, UART and more-the DOIT ESP32 DEVKIT V1 is ready to drive sensors, displays, motors, or anything your next connected gadget requires. ⚙️

Where to Buy DOIT ESP32 DEVKIT V1

Starting from

5$ per unit

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📋 Technical Specifications

Complete technical specification details for DOIT ESP32 DEVKIT V1

🔌 USB

Type Micro-USB

Serial Chip CP2102

🛰️ Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 4.2

BLE 4.2

🧠 Microcontroller

Model esp32

Clock Speed 240 MHz

Flash Size 4MB

Architecture xtensa

✨ Features & Pins

Digital IO 40

Analog Input 16

PWM 19

Interrupts 16

Download Full Datasheet

DOIT ESP32 DEVKIT V1 Board Dimensions

Physical measurements for DOIT ESP32 DEVKIT V1

DOIT ESP32 DEVKIT V1 dimensions - height, width

Width 23.37mm

Length 51.45mm

DOIT ESP32 DEVKIT V1 Pinout Diagram

Complete pin reference for DOIT ESP32 DEVKIT V1

The DOIT ESP32 DEVKIT V1 pinout exposes nearly the entire feature set of the ESP32 on two easy-to-breadboard rows of 15 pins each.

Power rails include VIN (5 V) for USB or external input, a regulated 3V3 output, and several GND pins for solid reference.

Serial I/O: TX0 (GPIO1) and RX0 (GPIO3) link to the CP2102 for USB programming, while TX2 (GPIO17) and RX2 (GPIO16) give you a second hardware UART for sensors or GPS modules.

I²C defaults to SDA (GPIO21) and SCL (GPIO22), but any open GPIO can be reassigned in software.

SPI comes in two flavors: the default VSPI bus (MOSI GPIO23, MISO GPIO19, SCK GPIO18, CS GPIO5) and an alternate HSPI bus on GPIO12–GPIO15 for additional devices.

Analog & touch: Eight ADC1 channels reside on GPIO32–GPIO39, usable even when Wi-Fi is active. Extra ADC2 channels (e.g., GPIO0, 2, 4, 12–15, 25–27) are shared with Wi-Fi. Dual 8-bit DAC outputs sit on GPIO25 and GPIO26. Many of these pads double as capacitive-touch sensors for sleek, button-free interfaces.

Every GPIO can source PWM signals for LED dimming or motor control. Keep an eye on boot-strap pins-GPIO0, GPIO2, and GPIO15-which must be held in the correct state (usually HIGH) during reset for normal startup.

From robust power handling to multiple high-speed buses, the DOIT ESP32 DEVKIT V1 pinout gives makers and professionals alike the flexibility to build anything from simple sensor nodes to fully fledged connected products-all on a compact, breadboard-friendly board.

✅ Safe Pins to Use

These pins are safe for general GPIO usage without boot or system conflicts

IO18

IO19

IO21

IO22

IO23

IO25

IO26

IO27

IO32

IO33

💡 Why Are These Pins Safe?

✓ No boot sequence involvement

✓ No flash/PSRAM connections

✓ No USB or JTAG conflicts

✓ Freely assignable without issues

⚠️ Pins to Avoid or Use with Caution

Reserved for critical functions. Misuse may cause boot failures, programming issues, or system conflicts.

🔄 Strapping Pins

Boot behavior & flash voltage

🐛 JTAG Debugging

Low-level debugging interface

🔌 USB Pins

USB Serial/JTAG communication

💾 Flash/SPI Pins

Memory & PSRAM connections

📡 UART Serial

Debugging & firmware uploads

PIN	Label	Why Avoid	Type
IO1	U0TXD (GPIO1)	Connected to on-board USB-UART for uploading and logs; drives serial output at boot, so using as GPIO can disrupt programming or console.	🔌 USB
IO2	GPIO2	If driven HIGH on reset (while IO0 is LOW), selects an unsupported SDIO boot mode, causing boot failure.	🛠️ Strapping
IO3	U0RXD (GPIO3)	Used for receiving data from USB-UART (programming); also pulled HIGH at boot for console communication, so using as GPIO can disrupt uploads.	🔌 USB
IO4	GPIO4	Sampled at reset for boot config; should not be driven at boot (affects boot mode timing).	🛠️ Strapping
IO5	GPIO5	Must be HIGH during boot; if pulled LOW at reset, alters SDIO slave timing and may prevent normal boot.	🛠️ Strapping
IO12	MTDI (GPIO12)	Keep LOW during boot (internal PD); pulling HIGH at reset selects 1.8V flash mode, causing flash brownout if 3.3V flash is used.	🛠️ Strapping
IO13	MTCK (GPIO13)	Used for JTAG debugging (TCK); avoid using as GPIO if JTAG is needed.	🪛 Other
IO14	MTMS (GPIO14)	Used for JTAG debugging (TMS); driving it as GPIO may interfere with JTAG or produce spurious signals at boot.	🪛 Other
IO15	MTDO (GPIO15)	Keep HIGH during boot (internal PU); if LOW on reset, bootloader log is silenced and boot mode may change.	🛠️ Strapping
IO16	GPIO16	Connected to internal PSRAM on PSRAM-enabled modules; not usable as GPIO on those modules.	⚡ Flash
IO17	GPIO17	Connected to internal PSRAM on PSRAM-enabled modules; not usable as GPIO on those modules.	⚡ Flash
IO34	GPIO34	Cannot be used as output (no drive capability); only suitable for analog/digital input.	🪛 Other
IO35	GPIO35	Cannot be used as output; only suitable for input.	🪛 Other
IO36	GPIO36 (SENSOR_VP)	Cannot be used as output; only suitable for input (e.g., analog read).	🪛 Other
IO39	GPIO39 (SENSOR_VN)	Cannot be used as output; only suitable for input.	🪛 Other

Useful Links

Datasheets and resources for DOIT ESP32 DEVKIT V1

Board Datasheet

Technical specifications

ESP32 Datasheet

Microcontroller reference

KiCad

https://github.com/tyme2tb/doit-esp32-devkit-v1/tree/main/kicad

Schematic

https://embedded-systems-design.github.io/overview-of-the-esp32-devkit-doit-v1/SchematicsforESP32.pdf

DOIT ESP32 DEVKIT V1 Custom Pin Mapping

Pin configuration and GPIO mapping for DOIT ESP32 DEVKIT V1

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Function	ESP Pin	I/O Type	Description
1	5V	5V	POWER INPUT	5V power input for the board
2	GND	GND	POWER GROUNT	Ground connection
3	3V3	3.3V	POWER OUTPUT	3.3V power output
5	IO1	GPIO1	BIDIRECTIONAL	GPIO
6	IO2	GPIO2	BIDIRECTIONAL	GPIO, ADC
7	IO3	GPIO3	BIDIRECTIONAL	GPIO
8	IO4	GPIO4	BIDIRECTIONAL	GPIO, ADC
9	IO5	GPIO5	BIDIRECTIONAL	GPIO
10	IO12	GPIO12	BIDIRECTIONAL	GPIO, ADC
11	IO13	GPIO13	BIDIRECTIONAL	GPIO, ADC
12	IO14	GPIO14	BIDIRECTIONAL	GPIO, ADC
13	IO15	GPIO15	BIDIRECTIONAL	GPIO, ADC
14	IO16	GPIO16	BIDIRECTIONAL	GPIO
15	IO17	GPIO17	BIDIRECTIONAL	GPIO
16	IO18	GPIO18	BIDIRECTIONAL	GPIO
17	IO19	GPIO19	BIDIRECTIONAL	GPIO
18	IO21	GPIO21	BIDIRECTIONAL	GPIO
19	IO22	GPIO22	BIDIRECTIONAL	GPIO
20	IO23	GPIO23	BIDIRECTIONAL	GPIO
21	IO25	GPIO25	BIDIRECTIONAL	GPIO, ADC
22	IO26	GPIO26	BIDIRECTIONAL	GPIO, ADC
23	IO27	GPIO27	BIDIRECTIONAL	GPIO, ADC
24	IO32	GPIO32	BIDIRECTIONAL	GPIO, ADC
25	IO33	GPIO33	BIDIRECTIONAL	GPIO, ADC
26	IO34	GPIO34	INPUT	GPIO, ADC
27	IO35	GPIO35	INPUT	GPIO, ADC
28	IO36	GPIO36	INPUT	GPIO, ADC
29	IO39	GPIO39	INPUT	GPIO, ADC

Legend

Function Pin role

GPIO ESP32 pin

I/O Direction

# Pin number

Pin Mappings

Complete pinout and GPIO mapping for DOIT ESP32 DEVKIT V1

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	Touch	PWM	Other
0	A11	T1
1			PWM	TX
2	A12	T2	PWM	LED_BUILTIN
3			PWM	RX
4	A10	T0	PWM
5			PWM	SS
12	A15	T5	PWM
13	A14	T4	PWM
14	A16	T6	PWM
15	A13	T3	PWM
18			PWM	SCK
19			PWM	MISO
21			PWM	SDA
22			PWM	SCL
23			PWM	MOSI
25	A18		PWM	DAC1
26	A19		PWM	DAC2
27	A17	T7	PWM
32	A4	T9	PWM
33	A5	T8	PWM
34	A6
35	A7
36	A0
39	A3

Legend

A0 Analog input

T0 Touch sensor

PWM PWM capable

RX/TX Serial pins

LED Built-in LED

# Pin number

Default Tools & Configuration

Build and upload settings for DOIT ESP32 DEVKIT V1

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	dio
Boot mode	dio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)