““Check for Bad and Good Beeps Now, plug your battery clip into the breadboard as you would normally, but without the battery. Touch one measurement lead tip to the positive connector and the other to the negative connector. If you hear a beep, there’s a short circuit, and you need to fix it! Check all your connections to the positive and negative supply columns. Next, check the connection between pin 11 on the 4011 NAND-gate IC and pin 13 on the 4017 decade counter to make sure they’re connected correctly. Use the continuity tester to check that you have a connection by carefully touching the lead tips on the IC pins. There isn’t much space between IC pins, so take care to be sure each tip only touches the correct pin. This time, a beep is a good sign.””
