RGB LED Ring - V1.21 front side RGB LED Ring - V1.21 New batch of boards Knock knock Knock knock Knock knock Knock sensor + amp Knock sensor + amp Makeshift workbench Knock sensor waveforms 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 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 TI-89 menu TI-89 integration TI-89 sum + plot menu TI-89 function plot TI-89 info page TI-30 TI-85 shield removed TI-30 TI-89 - 'full frontal nudity' TI-89 shield removed