Knock sensor waveforms Knock knock Old com system Old com system AVR recycling AVR recycling Dangling intelligence Dangling intelligence Still driving to Copenhagen 20 Swedish Kronor Bill Frederiks Kirke Still driving back home Copenhagen Harbour A "let me cross the water" building A sunset Børsen‎ Vor Frelsers Kirke Near Copenhagen "Kastellet" A sunset Indoor Skiing Copenhagen Canal Tour Malmö Parking Ticket A sunset Makeshift workbench Knock sensor + amp Knock sensor + amp Knock knock Knock knock Knock knock New batch of boards RGB LED Ring - V1.21 RGB LED Ring - V1.21 front side White Wagtail Scarlet Minivet Red-whiskered Bulbul Roseate Tern TI-85 magically fixed ;-) TI-89 TI-89 TI-89 front cover TI-85 TI-89 backcover removed TI-85 2 dead lines :-( TI-85 TI-85