Design review · 2026/10/19
2-layer vs 4-layer PCB for a first prototype
Choose PCB layers from routing, return paths, mechanical limits and test needs, and understand when a prototype needs a separately reviewed quote.
PCB prototyping guides
Plan your first custom PCB: compare prototype costs, prepare an engineering brief, and understand review, testing and manufacturing files.
Prototype planning · 2026/10/19
Arduino to custom PCB: choose your first board architecture
Move an Arduino prototype to a custom PCB: compare shields, carrier boards and integrated designs, then prepare pin mappings, programming and acceptance checks.
Prototype planning · 2026/10/19
How much does a custom PCB prototype cost?
Break down design, parts, assembly, testing and delivery costs, and check whether your first five boards fit the $149 Proto Kit scope.
Board design · 2026/10/19
ESP32 custom PCB design: a practical requirements checklist
Prepare an ESP32 custom PCB design brief with the exact module, power requirements, GPIO map, programming access, enclosure constraints and acceptance tests.
Prototype planning · 2026/10/19
Your first custom PCB, from breadboard to five prototypes
Prepare a practical board brief, preserve what works on your breadboard, and define the review and acceptance steps for your first custom PCB.
Design review · 2026/10/19
What engineer review checks before PCB fabrication
Understand electrical review, manufacturing checks and approval records, with an illustrative PCB review log that separates open issues from evidence.