electrical safety ~1 mA: OK ~10 mA: shock, contraction ~100 mA: fibrillation body: M ohm external, k ohm internal skin depth: ~1/f^(1/2) dielectric breakdown: ~kV/mm inventory RGB LED PWM hello.RGB.45.cad hello.RGB.45.asm LED array Charlieplexing hello.array.44.cad hello.array.44.2.cad (2 layer vinylcutter) hello.array.44.asm LCD 44780 hello.LCD.44.cad hello.LCD.44.asm video RS170, NTSC, PAL, SECAM hello.video.44.cad hello.video.44.asm speaker MOSFET hello.speaker.45.cad hello.speaker.45.pwm.asm hello.speaker.45.wave.asm DC motor H-bridge torque, power, efficiency, gearing hello.H-bridge.44.cad hello.H-bridge.44.asm stepper motor full, wave, half-, micro- stepping unipolar, bipolar hello.stepper.44.cad hello.stepper.44.full.asm hello.stepper.44.wave.asm hello.stepper.44.half.asm motor control Rohm Allegro Freescale servos through-hole assignment make a board that interfaces an input device with an output device guru output devices: Natan lab sections Tue 10:00A Nadya Tue 4:00P Max Wed 6:00P Jonathan