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Safety & Orientation

MICRORACK is designed to be a safe and robust platform for experimentation. Following a few simple rules will ensure your modules live a long and happy life.

The "Look for the Notch" Rule

Every MICRORACK module has a distinct triangular cutout (notch) at the bottom of the PCB. This is your orientation guide.

Correct Incorrect
Notch at bottom Notch at top
Power pins align with rails Module won't work
Module functions normally No damage, just no function

How to Check

  1. Hold the module with the components facing you
  2. Look for the triangular notch (60 mil / 1.52mm deep)
  3. The notch should point toward the bottom of your breadboard (usually the side closest to you)
  4. Insert the module so the power pins seat firmly in the power rails

FYI: If you accidentally plug a module in backwards, don't panic! MICRORACK modules include reverse polarity protection — they simply won't work until you flip them around. No smoke, no damage.

Electrical Safety

Voltage Levels

MICRORACK operates on low voltage (±12V, +5V DC). It is safe to touch the modules while powered.

Safety Aspect Status
Shock hazard ✅ None (low voltage)
Module touch-safe ✅ Yes
Reverse insertion ✅ Protected

Avoid Short Circuits

  • Don't drop metal objects (loose wires, paperclips) onto the powered breadboard
  • This can short the power rails and potentially damage your power supply
  • If you hear a "pop" or see smoke, disconnect power immediately

Hot-Swapping

While MICRORACK modules are designed to tolerate hot-swapping:

Approach Recommendation
Best practice Power off before adding/removing modules
Acceptable Careful insertion with power on
Avoid Rapid or careless module swapping while powered

Why? Hot-swapping can cause brief voltage transients. Modules are protected, but powering off first is always safer.

Handling Modules

Pin Headers

  • The male pin headers on the underside are robust but can bend
  • If pins get bent, gently straighten them with needle-nose pliers
  • Avoid forcing bent pins into the breadboard

Static Electricity

Like all electronics, modules can be sensitive to static discharge:

  • Touch a grounded metal object before handling modules (especially in dry environments)
  • Store modules in anti-static bags when not in use
  • Avoid handling modules on carpet or synthetic surfaces

Quick Safety Checklist

Before powering on:

  • ☐ All modules inserted with notch at bottom
  • ☐ Power Module firmly seated in power rails
  • ☐ No loose wires or metal objects on the breadboard
  • ☐ Power supply connected and correct polarity

Still Unsure?

If you're worried about a specific connection or orientation: