Hello Mike (N4JRD)! >reference applications and a much better description of Pbasic command >ny other pic basic compilers ?What do you think about picbasic ? I am using also PICBASIC and I am very satified. No problems. I have done a keyboard scanner( 8*8 matrice) to RS-232 ( 9600 baud), a serial to 4*20 LCD with many options ( EEPROM logos, 12-bit AD-converter, cursor control, row control). Serial to 4*relays ( 12V coils, 250VAC 10A contacts, 3*16-bit AD-converter to serial ( 3 USD coverter chips!). No I am thinking serial to PWM problem ( no spikes to output during serial input), Halogen lamp ( 12VAC 2A ) or 4-20 mA current output control by serial etc. Pekka Pekka Ritamaki PROBYTE Oy Nirvankatu 31 FIN-33820 TAMPERE Finland http://www.sci.fi/~pri Electronics product design: hardware+software+development tools puh INT +358-31-2661885 fax INT +358-31-2661886