Evan, As I understand it, to maintain control of a typical quadcopter, the flight controller adjusts the speed of each rotor several hundred times a second, based on feedback from various sensors - this may (!) be beyond the Apple //e. Besides, the quad couldn't carry it! Steve -----Original Message----- From: vcf-midatlantic [mailto:vcf-midatlantic-bounces@lists.vintagecomputerfederation.org] On Behalf Of Evan Koblentz via vcf-midatlantic Sent: Monday, September 26, 2016 12:49 AM To: Vcf-ma List <Vcf-midatlantic@lists.vintagecomputerfederation.org> Cc: Evan Koblentz <evan@snarc.net> Subject: [vcf-midatlantic] Mad science experiment Tonight's insanity: Lego drone programmed in Logo. Someone (presently) sell an expensive Lego drone kit, controlled by a phone app, using a mixture of Legos and custom parts. Why not do the same on an Apple //e using only 1980s Lego parts and Logo? This will be incredible if I can get it working for World Maker Faire next weekend. I am focusing hard on a lightweight and efficient design.