Explore SparkFun development board pinouts with this free SparkFun Board Pinout Reference. Identify GPIO layouts, power pins, UART, SPI, I2C, PWM, ADC pins, and connector configurations.
Configuring Serial Console on Artemis
Target pins TX1 (PAD 24) and RX1 (PAD 25) with a 3.3V USB-to-UART converter to establish serial terminal debug consoles safely.
Adding I2C Qwiic Sensors
Chain multiple Qwiic sensors using standard pre-wired cables to easily connect I2C displays and accelerometers.
Controlling PWM Channels
Drive motors or adjust LED brightness by mapping output lines to hardware-backed PWM-capable pads (e.g., D3 or D5).
Artemis Deep Sleep Code
Trigger ultra-low power modes in software, bringing current draw down to microamps while keeping RTC wakeup counters active.
SparkFun RedBoard and Thing Plus platforms utilize advanced ARM Cortex and RISC-V SoC architectures. Because these modern silicon chips feature sub-micron processes, they rely on clean, stabilized 3.3V CMOS logic signaling. Applying direct 5V input lines to these delicate ports will compromise internal chip junctions and lead to complete processor failure.
This reference consolidates layout configurations, logic states, and physical system interfaces across the SparkFun family.
Finding accurate pinout layouts is crucial for embedded designers, system architects, IoT engineers, and DIY hobbyists. This directory documents active signal paths to help prevent wiring errors, serial protocol failures, and board damage.
Always verify pinout configurations with a digital multimeter before powering up custom circuits or shield adapters.
No, the logic pins operate strictly at a 3.3V threshold. Exposing any GPIO, SPI, or UART pins to a 5V logic source without a level shifter can cause immediate hardware failure.
By default, SparkFun development boards configure their main UART debug terminal (TXD0 / RXD0) to a baud rate of 115200.
Yes, you can apply regulated 5.0V directly to the 5V power header pins. However, this bypasses the on-board input protection fuse, so ensure your power source is regulated and stable.
Adding too many devices to a single I2C bus can exceed the safe capacitive load limit, degrading signal integrity. Use lower-value pull-up resistors or active bus extenders for long chains.
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SparkFun Board Pinout Reference is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.