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robotics • electronics • coding

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  • Everything's included - parts, wires, batteries are included in all our kits
  • No experience needed - our online lessons to mentor, guide, and teach your kid
  • Safety first - no soldering required, low voltage projects
  • Challenge their mind - learn real engineering concepts
  • Challenge their hands - build using real electronics components
  • Challenge their grit - not-so-easy means much-more-rewarding when the challenge is met


Kids ages 7-12:
Select our "not-so-easy" electronics kit (monthly subscription)
Kids ages 10+:
Select our "not-so-easy" Q the Robot robotics kit (one-time purchase)
Log online for our video & coding lessons that will show your kid how to build the project & teach them how it works.

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How the final Project Countdown circuit works

As the capacitor is being filled, the current reduces through the resistors. The last resistor runs out of current first, and that turns off the PNP which makes the LED turn on. The resistor behind the one that ran out of current runs out of current next, and finally the 1st resistor runs out when the capacitor is filled.

Capacitors In A Circuit - Small Capacitor

when you replace the larger capacitor with the smaller one, the LED doesn't fade that much because it can't hold as much electricity

About the PNP Circuit

it needs power to not come in to the base prong to work, and so when our tentacles are connected it does not go off

Why can't we see infrared?

we can not see infrared because that is the only type of light energy that our eyes are not sensitive to.

Why the LED stayed off

The LED stayed off because the thermistor is at room temperature, and the circuit is not set up so the LED turns on when it gets warm. The circuit is set up so when the thermistor is cold the bi-color LED will turn on, not the other way around.

PNP Transistor Review

If the base prong is connected to the negative battery wire, it will be turned off, lighting up the LED. If the base prong is connected to the positive battery wire, the transistor will be on, turning off the LED.