Ever since we made the first RedBoard in 2013 we've continued to tweak, improve upon, and introduce new RedBoards all with the familiar UNO footprint.
SparkFun RedBoards
Sketch above is meant to show general dimensions of RedBoards. Some board dimensions may differ slightly.
Arduino Compatible
As you would come to expect out of an Arduino UNO alternative, all SparkFun RedBoards are compatible with the Arduino IDE.
Consistent Footprint
Commonly known as the UNO footprint, SparkFun's RedBoards take advantage of this familar form factor to be compatible with many of the shields on the market today.
Abundant Options
There's a RedBoard for everyone. Whether you need the power of the onboard SAMD21 of the RedBoard Turbo or the battery conservation of the RedBoard Artemis we've got an option for your next build.
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The RedBoard Plus is an Arduino-compatible development board that has everything you need in an Arduino Uno with extra perks like USB-C, Qwiic, and more.
| MCU | Bootloader | Input Voltage | Clock Speed |
|---|---|---|---|
| ATmega328P | Optiboot (UNO) Bootloader | 7V–15V via barrel jack 5V via USB-C | 16MHz |
| Flash | PWM | Analog Inputs | UART | I2C | SPI |
|---|---|---|---|---|---|
| 32 kB | 6 | 8 | 1 | 1 + Qwiic Connector | 1 |
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The SparkFun RedBoard Qwiic is an Arduino-compatible development board with a built in Qwiic connector, eliminating the need for soldering and shields!
| MCU | Bootloader | Input Voltage | Clock Speed |
|---|---|---|---|
| ATmega328 | Optiboot (UNO) Bootloader | 7V–15V | 16MHz |
| Flash | PWM | Analog Inputs | UART | I2C | SPI |
|---|---|---|---|---|---|
| 32 kB | 6 | 6 | 1 | 1 + Qwiic Connector | 1 |
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The SparkFun RedBoard combines the simplicity of the UNO's Optiboot bootloader, the stability of the FTDI, and the shield compatibility of the Arduino R3.
| MCU | Bootloader | Input Voltage | Clock Speed |
|---|---|---|---|
| ATmega328 | Optiboot (UNO) Bootloader | 7V–15V | 16MHz |
| Flash | PWM | Analog Inputs | UART | I2C | SPI |
|---|---|---|---|---|---|
| 32 kB | 6 | 6 | 1 | 1 | 1 |
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The IoT RedBoard is an ESP32 WROOM-equipped development board that has everything you need in an Arduino Uno with extra perks like USB-C, Qwiic, and more.
| MCU | Bootloader | Input Voltage | Clock Speed |
|---|---|---|---|
| ESP32-D0WD-V3 embedded, Xtensa dual-core 32-bit LX6 microprocessor | ESP-IDF Software | 7V-15V via barrel jack or 5V (regulated) via USB-C | Adjustable 80MHz – 240MHz |
| Flash | PWM | Analog Inputs | UART | I2C | SPI |
|---|---|---|---|---|---|
| 4/8/16 MB | 6 | 8 | 1 | 1 + Qwiic Connector | 1 |
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If you’re ready to step up your Arduino game from older 8-bit/16MHz microcontrollers, the SparkFun RedBoard Turbo is a formidable alternative. It can also support Python scripts!
| MCU | Bootloader | Input Voltage | Clock Speed |
|---|---|---|---|
| ATSAMD21G18 32-bit/48MHz ARM Cortex-M0+ | UF2 | 4.2V–6.0V for charger - otherwise 3.5V–6.0V | 16MHz |
| Flash | PWM | Analog Inputs | UART | I2C | SPI |
|---|---|---|---|---|---|
| 4MB | 10 | 6 | 1 | 1 + Qwiic Connector | 1 |
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The RedBoard Artemis takes the incredibly powerful Artemis module from SparkFun and wraps it up in an easy to use and familiar Uno footprint.
| MCU | Bootloader | Input Voltage | Clock Speed |
|---|---|---|---|
| ARM Cortex M4F Apollo3 Chip | Ambiq factory Secure Bootloader (ASB) or SparkFun Variable Bootloader (SVL) | 7V–15V via barrel jack 5V via USB-C | 48MHz 98MHz turbo |
| Flash | PWM | Analog Inputs | UART | I2C | SPI |
|---|---|---|---|---|---|
| 1 MB | 21 | 6 | 2 | 6 + Qwiic Connector | 4 |
RedBoard Shields
Our Qwiic line of products has grown to include powerful development boards, helpful shields, a vast array of sensors and much more.
