Beeper
This is a very simple program that just beeps when you connect a voltage over 0.5 V to channel A. There is a 1.0 V voltage on the waveout output, so if the two probes are connected together you get a beep.
The program can be used to check logic level signals and whether PCB traces are connected.
Voltage thresholds and beep volume are configurable.
To check logic level signal: Connect probe to Channel A. Connect probe ground to your circuit. Touch the probe tip to some wire, the device will beep if the wire has voltage.
To check conductivity: Connect one probe to Channel A. Connect another probe to Wave out. Touch both probes to the wire you want to measure, the device will beep if the wire is connected. The grounds do not need to be connected. If you don't connect the grounds, the measurement can be done even when your circuit is powered.