Fixed Volt-56: Node-55: Probe-54: Probe-53: Node-52: And Gate-51: Buffer-50: Ground (0 V)-49: Led-48: Resistor-47: Buffer-46: Or Gate-45: Node-44: Resistor-43: Push-42: Rail-41: lm555-40: Node-39: Node-38: Node-37: Node-36: Potentiometer-35: Resistor-34: Resistor-33: Capacitor-32: Ground (0 V)-31: lm555-30: Rail-29: Node-28: Node-27: Capacitor-26: Node-25: Node-24: Resistor-23: Node-22: Node-21: Ground (0 V)-20: Node-19: Node-18: Node-17: Toggle Switch-16: Node-15: lm555-14: Node-13: Resistor-12: Resistor-11: Node-10: Node-9: Node-8: Node-7: Ground (0 V)-6: Ground (0 V)-5: Buffer-4: And Gate-3: And Gate-2: Node-1: Connector-57: Connector-59: Connector-61: Connector-62: Connector-64: Connector-65: Connector-66: Connector-67: Connector-68: Connector-69: Connector-70: Connector-72: Connector-74: Connector-75: Connector-76: Connector-77: Connector-78: Connector-79: Connector-81: Connector-83: Connector-84: Connector-85: Connector-86: Connector-87: Connector-89: Connector-90: Connector-91: Connector-92: Connector-93: Connector-94: Connector-96: Connector-97: Connector-98: Connector-99: Connector-100: Connector-101: Connector-102: Connector-103: Connector-104: Connector-105: Connector-106: Connector-107: Connector-108: Connector-109: Connector-110: Connector-112: Connector-114: Connector-115: Connector-116: Connector-117: Connector-118: Connector-120: Connector-122: Connector-124: Connector-126: Connector-128: Connector-129: Connector-131: Connector-133: Connector-135: Connector-137: Connector-139: Connector-141: Connector-143: Connector-144: Connector-145: Connector-147: Connector-148: Connector-149: Connector-150: Connector-151: Connector-153: PlotterWidget-155: SerialPortWidget-156: