I've just noticed that MikroElectronika have just brought out a Analog=20 system Lab Kit using TI parts. It contains Op-Amps, 2 * 12 bit DAC's, buck DC/DC controller, analogue=20 multipliers. It appears to be aimed at schools and for those learning and=20 experimenting with analogue devices. http://www.mikroe.com/eng/products/view/790/analog-system-lab-kit-pro/ Colin -- cdb, 15/12/2011 =20 -- colin@btech-online.co.uk --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .