SparkFun ESP32 Thing image

SparkFun ESP32 Thing

Development Board

Code name: ESP32_THING
ESP32

SparkFun ESP32 Thing 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 SparkFun ESP32 Thing

SparkFun’s original ESP32 board with USB and LiPo support - great for hobbyist Wi-Fi/BLE projects.

📋 Technical Specifications

Complete technical specification details for SparkFun ESP32 Thing

🛰️ 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

Useful Links

Datasheets and resources for SparkFun ESP32 Thing

ESP32 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for SparkFun ESP32 Thing

40
Digital I/O Pins
16
Interrupt Pins
16
Analog Inputs
19
PWM Pins
PinAnalogTouchPWMOther
0A11T1KEY_BUILTIN
1PWMTX
2A12T2PWMSS
3PWMRX
4A10T0PWM
5PWMLED_BUILTIN
12A15T5PWM
13A14T4PWM
14A16T6PWM
15A13T3PWM
18PWMSCK
19PWMMISO
21PWMSDA
22PWMSCL
23PWMMOSI
25A18PWMDAC1
26A19PWMDAC2
27A17T7PWM
32A4T9PWM
33A5T8PWM
34A6
35A7
36A0
39A3
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 SparkFun ESP32 Thing

SettingValue
Bootloader toolesptool_py
Uploader toolesptool_py
Network uploader toolesp_ota
Bootloader address0x1000
Flash modedio
Boot modedio
Maximum upload size
1280 KB (1310720 bytes)
Maximum data size
320 KB (327680 bytes)
Configuration Summary

The SparkFun ESP32 Thing uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x1000.

Flash mode: dio | Boot mode: dio

Max sketch size: 1280 KB | Max data size: 320 KB