Adafruit Love To Code Chibi Scope is a small, 1.3" diagonal OLED screen that doubles as an oscilloscope with text, voltage, and wave functions all in one package. Connect the Chibi Scope to a circuit with the included alligator clips; wire up +5V, GND, and TXT. The first two pads are for power, the third pad is the analog/text input. Please note the analog/text input is 3.3V signal/logic max. This little scope connects to the Chibi Chip's "TXT" output. Use the default "text" mode to debug, display sensor values, or code text-based events. Chibi Scope also goes into "volts" mode, showing the current input voltage like a multimeter. Press the button again, and the Chibi Scope transitions into "wave" mode, displaying the shape of the voltage on its input pin over time, similar to an oscilloscope.