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👉 ESP32 pin finder tool 👈for ESP-32-WROOM-32E
https://github.com/David-Nahorniak/ESP32-pin-finder-tool
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🖊️ Notes of my project📌 PIN✨ BASIC🚍 BUS PROTOCOLS
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Use forConnect toNotesGPIONumberNameTypepriority ratingInputADCOutputProblems with pinsCapacitive
touch		DACRTCAttachedI2C
(standard)		UARTSPI
(VSPI and HSPI)		JTAGSD/SDIO/MMC Host
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025IO00GPIO0NoADC2_CH1Yes!!outputs PWM signal at boot, boot buttonT1RTC_GPIO11
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135TXD0GPIO0NoNoYes!!debug output at boot UART0 TX (U0TXD)
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224IO02GPIO0Yes!!ADC2_CH2Yesfloarting or low for flashingT2RTC_GPIO12LED on-board HSPI QUADWPHS2_DATA0
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334RXD0GPIO0YesNoNoHIGH at bootUART0 RX (U0RXD)
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426IO04GPIO4YesADC2_CH0YesT0RTC_GPIO10HSPI QUADHDHS2_DATA1
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529IO05GPIO1YesNoYes!!outputs PWM signal at boot (but Andreas Spiess had no problems)VSPI CS (SS)HS1_DATA6
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620SCK/CLK*Unusable0NoNoNoconnected to the integrated SPI flashU1CTSSPICLKHS1_CLK
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721SDO/SD0*Unusable0NoNoNoconnected to the integrated SPI flashU2RTSSPIQHS1_DATA0
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822SDI/SD1*Unusable0NoNoNoconnected to the integrated SPI flashU2CTSSPIDHS1_DATA1
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917SHD/SD2*Unusable0NoNoNoconnected to the integrated SPI flashU1RXDSPIWPHS1_DATA2
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1018SWP/SD3*Unusable0NoNoNoconnected to the integrated SPI flashU1TXDSPIWPHS1_DATA3
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1119SCS/CMD*Unusable0NoNoNoconnected to the integrated SPI flashU1RTSSPICSOHS1_CMD
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1214IO12GPIO1Yes!!ADC2_CH5Yesboot fail if pulled highT5RTC_GPIO15HSPI MISO (SDO)MTDIHS2_DATA2
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1316IO13GPIO4YesADC2_CH4YesT4RTC_GPIO14HSPI MOSI (SDA,DIN)MTCKHS2_DATA3
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1413IO14GPIO2YesADC2_CH6Yes!!outputs PWM signal at bootT6RTC_GPIO16HSPI SCLK (CLK, SCL, SCK)MTMSHS2_CLK
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1523IO15GPIO0Yes!!ADC2_CH3Yes!!
if low then no boot consol log, outputs PWM signal at boot
T3RTC_GPIO13HSPI CS (SS)MTDOHS2_CMD
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1627RX2
GPIO (no WROVER)
3YesNoYesNot available on WROVERUART2 RX (U2RXD)HS1_DATA4
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1728TX2
GPIO (no WROVER)
3YesNoYesNot available on WROVERUART2 TX (U2TXD)HS1_DATA5
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1830IO18GPIO3YesNoYesVSPI SCLK (CLK, SCL, SCK)HS1_DATA7
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1931IO19GPIO3YesNoYes(U0CTS)VSPI MISO (SDO)
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2133IO21GPIO3YesNoYesI2C SDAVSPI QUADHD
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2236IO22GPIO3YesNoYesI2C SCL(U0RTS)VSPI QUADWP
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2337IO23GPIO3YesNoYesVSPI MOSI (SDA,DIN)HS1_STROBE
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2510IO25GPIO4YesADC2_CH8YesDAC1RTC_GPIO6
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2611IO26GPIO4YesADC2_CH9YesDAC2RTC_GPIO7I2C alter. SCL
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2712IO27GPIO4YesADC2_CH7YesT7RTC_GPIO17I2C alter. SDA
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328IO32GPIO5YesADC1_CH4YesT9RTC_GPIO9
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339IO33GPIO5YesADC1_CH5YesT8RTC_GPIO8
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346IO34GPIO2Yes!ADC1_CH6NoNo internal pullupRTC_GPIO4
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357IO35GPIO2Yes!ADC1_CH7NoNo internal pullupRTC_GPIO5
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SENSOR_VP
GPIO2Yes!!ADC1_CH0NoNo internal pullupRTC_GPIO0Hall sensor
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SENSOR_VN
GPIO2Yes!!ADC1_CH3NoNo internal pullupRTC_GPIO3Hall sensor
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1GNDPower
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23V3Power
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3ENPower
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15GNDPower
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32NCPower
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38GNDPower
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39GNDPower
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↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
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↓ ESP-WROOM-32 PINOUT DIAGRAM ↓↓ Explanation ↓
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GPIO
5- the best of all
YesADC1_*Yesfrom official documentationT*DAC_*RTC_*I2C *UART0 *VSPI *MT*HS1_*
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4- awesomeYes!Yes!from the table by Andreas SpiessI2C alternatively *UART1 *HSPI *HS2_*
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GPIO (no WROVER)
3- yeah, butYes!!ADC2_*Yes!!from randomnerdtutorials.comUART2 *
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Unusable2- rather notNoNoNoSPI*
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Power
1- bad bad bad
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0- no way
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↓ what it's for ↓
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My rating how difficult the pin is to work with. Based on data from the "basic use" chapter.HOW TO:
Reads Analog Values		HOW TO:
PWM output (Analog Output)		Explains why there are exclamation marks next to input and output.HOW TO:
Capacitive Touch Sensor Pins		WHAT IS:
Digital
To
Analog
convertor		HOW TO:
External Wake Up from Deep Sleep		HOW TO:
I2C (Inter Integrated Circuit)		WHAT IS:
UART		WHAT IS:
SPI (Serial Peripheral Interface)		(PlatformIO debugging)

HOW TO:
Inline Debugging
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All pins except those marked have internal pullup.HOW TO:
I2S (Inter-IC Sound)
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↓ NOTES ↓
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randomnerdtutorials bad data!standard SW changeable pinHSPI [spi2]
VSPI [spi3] standard libraries
SPI [spi0, spi1] flash only
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ADC2
can not be used when Wi-Fi is used
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↑ https://randomnerdtutorials.com/esp32-pinout-reference-gpios/ ↑
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