Board power input, use the same power as the microcontroller logic level.
Common ground for power and logic.
I2C clock line to the host microcontroller.
I2C data line to the host microcontroller.
STEMMA QT/Qwiic I2C connector for compatible boards and accessories.
AW9523 GPIO expander pins for LED current-source dimming or GPIO input/output. Adafruit notes no internal pull-ups or pull-downs.
Interrupt output pin that can alert when an input value changes.
Hardware reset input, set low to reset. Adafruit notes a 10kΩ pull-up resistor.
I2C address configuration jumpers: default 0x58, A0 shorted 0x59, A1 shorted 0x5A, both shorted 0x5B.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VIN | power | Board power input, use the same power as the microcontroller logic level. | 3V to 5V logic-level board power, per Adafruit Learn. | |
| GND | ground | Common ground for power and logic. | 0V | |
| SCL | i2c | I2C clock line to the host microcontroller. | Host I2C logic level. | |
| SDA | i2c | I2C data line to the host microcontroller. | Host I2C logic level. | |
| STEMMA QT |
ADS1115/MCP3421 ADCs, MCP4725 and GP8413 DACs, CP2102 USB-UART boards, and I2C plumbing like the LTC4316 address shifter — matched to bus, resolution and signal range.
CP2102 USB UART Board (mini) visual previewCP2102 USB UART Board (mini)
FT232 USB UART Board (mini) visual previewFT232 USB UART Board (mini)
10-bit ADC (SPI) visual preview10-bit ADC (SPI)
2-Channel RS232 Module for Raspberry Pi Pico visual preview2-Channel RS232 Module for Raspberry Pi Pico
4-Ch USB 3.2 Gen1 Hub (USB3.2-Gen1-HUB-4U) visual preview4-Ch USB 3.2 Gen1 Hub (USB3.2-Gen1-HUB-4U)
6-in-1 USB to Serial Converter visual preview6-in-1 USB to Serial Converter
Adafruit AD5693R 16-Bit I2C DAC Breakout visual previewAdafruit AD5693R 16-Bit I2C DAC Breakout
Adafruit ADS122C04 24-Bit ADC - STEMMA QT / Qwiic visual previewAdafruit ADS122C04 24-Bit ADC - STEMMA QT / Qwiic
Adafruit CAN Pal - CAN Bus Transceiver visual previewAdafruit CAN Pal - CAN Bus Transceiver
Adafruit DAC6578 Breakout - 8-Channel 10-bit I2C DAC visual previewAdafruit DAC6578 Breakout - 8-Channel 10-bit I2C DAC
Adafruit DAC7578 Breakout - 8-Channel 12-bit I2C DAC visual previewAdafruit DAC7578 Breakout - 8-Channel 12-bit I2C DAC
Adafruit DS2484 I2C to 1-Wire Bus Adapter Breakout visual previewAdafruit DS2484 I2C to 1-Wire Bus Adapter Breakout
10W Super Bright LED - Violet visual preview
10W Super Bright LED - Warm White visual preview
3-Pin LED Strip Connector Cable - Single Head (5PCS) visual preview
3-Pin LED Strip Connector Cable (5PCS) visual previewWS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.
Components · Addressable LEDs · 176 parts
18-Channel 8-bit PWM LED Driver w/ I2C Interface visual preview
24LC256 I/P I2C EEPROM PDIP-8 visual preview24LC256 P DIP-8 visual preview
4N25 DIP-6 visual preview74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.
Components · Integrated circuits · 68 parts
256MB Micro SD Memory Card visual preview
25LC256 256 Kbit SPI EEPROM visual preview
64 Mbit Serial Pseudo SRAM - PSRAM - 3.3V 133 MHz visual preview
8GB Class 10 SD/MicroSD Memory Card - SD Adapter Included visual preview24LC32/25LC256 EEPROM, I2C FRAM, 64Mbit PSRAM, and microSD breakouts up to 64GB — matched to write frequency and data volume, not just interface.
Components · Memory & storage · 39 parts
1/4W Resistor Pack - 400 PCS visual preview
1N4001 Diode - 10 pack visual preview
1N4007 Diode visual preview
1N4148 General Purpose Fast Switching Diode visual previewE12 resistor kits, ceramic and electrolytic capacitor sets, 1N4148/1N4007 diodes, TIP120 Darlingtons, IRLZ44N MOSFETs and 100F supercapacitors — bench stock in kit quantities.
Components · Passives · 56 parts
| connector |
| STEMMA QT/Qwiic I2C connector for compatible boards and accessories. |
| I2C connector follows board power/logic level. |
| 0-15 | gpio | AW9523 GPIO expander pins for LED current-source dimming or GPIO input/output. Adafruit notes no internal pull-ups or pull-downs. |
| INT | interrupt | Interrupt output pin that can alert when an input value changes. |
| RST | reset | Hardware reset input, set low to reset. Adafruit notes a 10kΩ pull-up resistor. |
| A0 / A1 jumpers | configuration | I2C address configuration jumpers: default 0x58, A0 shorted 0x59, A1 shorted 0x5A, both shorted 0x5B. |
