LOLIN D32 PRO
Enhanced version with more flash and PSRAM - suited for advanced ESP32 projects needing extra memory.
LOLIN D32 PRO Pinout
8 pins · 2.54 mm pitch| Pin | GPIO | Labels | Status | Capabilities | Notes |
|---|---|---|---|---|---|
| 1 | 4 | TF_CS | safe | - | |
| 2 | 5 | LED_BUILTIN | strapping | - | |
| 3 | 12 | TS_CS | strapping | - | |
| 4 | 14 | TFT_CS | strapping | - | |
| 5 | 27 | TFT_DC | safe | - | |
| 6 | 32 | TFT_LED | safe | - | |
| 7 | 33 | TFT_RST | safe | - | |
| 8 | 35 | _VBAT | strapping | - |
Start with these
4 pins with no boot or system involvementFreely assignable - no strapping, flash, USB or JTAG duties. Ideal first picks for buttons, sensors and LEDs.
Fine - with a little care
4 pins · 4 things to knowLED_BUILTINGPIO5 Bootstrapping pin; internal pull-up; VSPI CS0 (default SPI chip-select); acts as FSPIWP (flash write-protect) on internal-flash variants. Strapping
Must be HIGH during boot; if pulled LOW at reset, alters SDIO slave timing and may prevent normal boot.
TS_CSGPIO12 Bootstrapping pin; JTAG TDI; sets flash voltage (VDD_SDIO); also HSPIQ (flash data line). Strapping
Keep LOW during boot (internal PD); pulling HIGH at reset selects 1.8V flash mode, causing flash brownout if 3.3V flash is used.
TFT_CSGPIO14 JTAG mode select pin (TMS); also HSPI CLK and PWM-capable GPIO. JTAG
Used for JTAG debugging (TMS); driving it as GPIO may interfere with JTAG or produce spurious signals at boot.
_VBATGPIO35 Input-only GPIO (no output driver); ADC1 channel 7. Other
Cannot be used as output; only suitable for input.
All 8 pins on the LOLIN D32 PRO are usable GPIO, spaced at the standard 2.54 mm pitch.
4 of the exposed pins carry boot-time or system duties on the ESP32 (LED_BUILTIN, TS_CS, TFT_CS and 1 more) - check the guidance above before wiring anything to them. TF_CS, TFT_DC, TFT_LED and TFT_RST are free of any such role - the safest first picks.
Getting started
flash your first firmware in ~2 minutesBoard: ESP32 Wrover Module Flash Size: 16MB (128Mb) Flash Mode: DIO PSRAM: QSPI PSRAM Partition Scheme: 16M Flash (3MB APP/9.9MB FATFS) Upload Speed: 921600
// toggle GPIO4 - wire an LED and resistor to it
void setup() {
pinMode(4, OUTPUT);
}
void loop() {
digitalWrite(4, HIGH); delay(500);
digitalWrite(4, LOW); delay(500);
}[env:d32_pro]
platform = espressif32
board = esp32dev
framework = arduino
monitor_speed = 115200
upload_speed = 921600
board_build.arduino.memory_type = qio_qspi
build_flags = -DBOARD_HAS_PSRAMesp32dev - or type it after board =.esp32:
board: esp32dev
variant: esp32
framework:
type: esp-idf
psram:
mode: quad
speed: 80MHz
# blink - GPIO4
output:
- platform: gpio
pin: 4
id: led_out
light:
- platform: binary
name: "LED"
output: led_outesp32dev (same ids as PlatformIO).esptool.py --chip esp32 --port /dev/ttyACM0 \
--baud 921600 write_flash 0x1000 firmware.bin--port = your /dev/tty* (macOS/Linux) or COMx (Windows).Specifications
ESP32 · 65 × 25.4 mm · vs other ESP32 chips →Dimensions
About this board
Inside sits the ESP32 - a dual-core Xtensa with both Bluetooth Classic and BLE.
At $8.80 it's cheaper than most ESP32 boards, which usually run around $20.
Only 8 GPIO are broken out, where most ESP32 boards manage about 24 - worth checking the pinout covers what you need.
Around the module: 8MB (QSPI) PSRAM, a microSD slot, battery charging (TP4054) via JST-PH 2.0, status LEDs (Built-in, Charging) and Reset buttons.
- LOLIN TFT connector for a plug-in display (no onboard screen - display sold separately)
- LOLIN I2C connector for chainable modules
- V2.0.0 ships with 16MB flash / 8MB PSRAM; earlier V1 has 4MB flash / 4MB PSRAM
Where to buy
prices are typical street pricesResources
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