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!
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.