When organizing introductory to electronics events, it many unexpected things could go wrong.

• Laptop should not be from library/school, as it doesn’t allow to install required drivers.
• Remind them to bring mouse and charger.
• New macbooks only have USB-C/thunderbolt ports, and may need different cable to connect Arduino/NodeMCU/etc.
• Kids should be able to read English words (function names, identifiers, etc), able to use computer, and know keyboard layout. Using en-us layout on Finnish laptops is frustrating, when they need to use brackets, semicolons or arrows.
• Some may bring old laptops that only support WiFi a/g. Setting up alternative WiFi AP could be good solution.
• Have enough extension cords.
• Somebody may accidentally short-circuit battery pack, and it will explode or hurt others. Always check that First-Aid kit is available and complete.
• Be ready that 10-20% of things/components get broken. Preparing spare parts will reduce stress for organizers.

Notes for events with kids below 10.

• Kids should be able to read English words (function names, identifiers, etc), able to use computer, and know keyboard layout. Using en-us layout on Finnish laptops is frustrating, when they need to use brackets, semicolons or arrows.
• Understanding electronics and safety is not part of their attention. Try to avoid having laptops and other devices that directly connect to power line. Using powerbanks could be a good idea.
• Tasks with modifying single integer variable, and then trying is easy and keep interest. It could be motor speed, delay or number of cycles in for-loop.
• Kids may tear wires, bend pins, and experiment with electronics in other not-expected ways without even noticing what they are doing. Allow them to do it.
• Battery, motor, potentiometer, few leds to destroy, resistors, breadboard, wires is enough to keep them busy for few hours.