SparkFun SAMD21 Mini Breakout
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Fit a 32-bit control experiment into a compact footprint with the SAMD21 Mini Breakout. Its integrated USB and Cortex-M0+ processor make it a candidate for a small custom robot board or a dense prototype. A useful lesson is to move a working breadboard program onto a smaller assembly while keeping a clear pin map and testing each connection. The compact layout saves board space but also makes power and signal planning more important.
Before you buy
Use a compatible 3.3 V circuit and the documented SAMD software setup. The observed page reported low stock, which must be rechecked before procurement.
SparkFun SKU: DEV-13664 · Category: Controllers, compute & development boards
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Official product specifications and documentation
EAR summary based on supplier documentation; this is not a hands-on review. Product identity rechecked during the October 25, 2026 sprint. SparkFun Originals eligibility evidence was recorded October 17, 2026. Affiliate eligibility remains subject to SparkFun's program terms.