SparkFun ESP32 Thing Plus C

Development Board

Code name: ESP32_THING_PLUS_C

ESP32

SparkFun ESP32 Thing Plus C is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 16MB flash memory.

About SparkFun ESP32 Thing Plus C

USB-C version of the Thing Plus ESP32 board - great for modern prototyping with Feather-compatible layout.

Technical Specifications

Complete technical specification details for SparkFun ESP32 Thing Plus C

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 16MB

Architecture xtensa

✨ Features & Pins

Digital IO 40

Analog Input 16

PWM 18

Interrupts 16

Quick Setup

Copy-paste configs for SparkFun ESP32 Thing Plus C - auto‑generated from this board's exact hardware specs.

ESP32 240 MHz 16MB DIO Xtensa

In Arduino IDE 2 select Esp32 Thing Plus C from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 16MB · DIO.

Tools menu settings

Board (select in Arduino IDE) Esp32 Thing Plus C

CPU Frequency 240 MHz

Flash Size 16MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "Esp32 Thing Plus C" for the SparkFun ESP32 Thing Plus C.

platformio.ini


[env:esp32thing_plus_c]
platform  = espressif32
board     = esp32dev
framework = arduino

; Exact hardware config for SparkFun ESP32 Thing Plus C
board_build.mcu        = esp32
board_build.f_cpu      = 240000000L
board_build.flash_size = 16MB
board_build.flash_mode = dio
board_upload.flash_size = 16MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32dev
  framework:
    type: arduino   # or "esp-idf"

# SparkFun ESP32 Thing Plus C - 240 MHz ESP32
# Flash: 16MB | USB: N/A

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 16MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

Useful Links

Datasheets and resources for SparkFun ESP32 Thing Plus C

ESP32 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for SparkFun ESP32 Thing Plus C

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	Touch	PWM	Other
0		T1
2		T2	PWM	RGB_BUILTIN
4		T0	PWM
12	A11	T5	PWM
13	A12	T4	PWM	LED_BUILTIN
14	A6	T6	PWM
15	A8	T3	PWM	SS
16			PWM	RX
17			PWM	TX
18			PWM	SCK
19			PWM	MISO
21			PWM	SDA
22			PWM	SCL
23			PWM	MOSI
25	A1		PWM	DAC1
26	A0		PWM	DAC2
27	A10	T7	PWM
32	A7	T9	PWM
33	A9	T8	PWM
34	A2
35	A5
36	A4
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 SparkFun ESP32 Thing Plus C

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)