AVR - CDC
AVR-CDC is an USB-RS232C interface using CDC (Communication Device Class) protocol on USB 1.1. Although CDC is a part of USB 2.0 standard, it works on low speed USB with slower speed. ATtiny45 can handle the 4800bps 8N1 well enough.No dedicated driver necessary. CDC loads Windows built-in usbser.sys.It is very low cost ith ATtiny45, this is the cheapest solution for the USB-RS232C interface.[read]
AVR DDS signal generator
This is the second version of the AVR signal generator. This time it uses a single sided PCB to simplify the project, and has both offset and amplitude controls. All the source code and schematics are available on the website. Signal generators can be very expensive, this version shouldnโt break the bank.[read]
AVR Thermometer
Build a simple digital thermometer using AT90S2313 and DS1820. Download the hex code directly to the chip with ISP cable. The thermometer is capable of measuring temperature from -55C to +125C with 1 degreeC resolution.[read]