The lemon battery is one of the most popular science experiments for kids. It features in Episode 2: B is for Battery of Circuit Playground by LadyAda from AdaFruit Industries. When my kids watched this episode they of course wanted to make a lemon battery.
It’s a quick and fun experiment to do and kids can get really involved with it. When their cousin visited we had fun doing the experiment. We used a mixture of lemons and limes – any acidic citrus fruit will work nicely.
“B is for Battery” – Circuit Playground Episode 2!
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.