Buying guides
How to choose the right part, what to check before you order, and how ordering to Canada works.
Choosing a servo for robotics: SG90 vs MG90S vs MG996R vs serial bus servos
Compare SG90, MG90S, MG996R and serial bus servos by torque, size, gears and power, and work out how much torque a joint actually needs.
7 min read
ESP32 vs Arduino vs Raspberry Pi: which board for your project
What the Arduino Uno, ESP32 and Raspberry Pi are each good at, where each struggles, and what else you need to buy to get one running.
6 min read
Stepper motors and drivers: NEMA 17, A4988, DRV8825 and TMC2209 explained
What NEMA 17 does and doesn't tell you, how to wire a stepper and set a driver's current limit, and how the A4988, DRV8825 and TMC2209 compare.
5 min read
Sourcing parts for FIRST, FTC, VEX and school robotics teams in Canada
Plan a season's parts order: what the FTC, FRC and VEX rules allow, which spares to stock, how to allow for delivery times, and how to request a bulk quote.
5 min read
Ordering electronics parts to Canada: delivery times, tracking, returns and import fees
What to expect after you order: delivery estimates, multiple packages, tracking, returns and refunds, and what our policy does and doesn't cover on import fees.
5 min read
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