Voice Recorder Circuit Diagram. Here is another instructable describing how to set up a simple audio out circuit with arduino. The first requires two people and a pair of wires long enough to locate the listener out of hearing range of the speaker.
It was a close approximation to the sigsaly at 1200 bits. Add wav decoder functionality. Design display gui configure the touch i2c driver.
Multirate circuit switching was the next step away from basic circuit switching.
The schematic for. Rw pin of the lcd is grounded. You can see in the middle figure that ive turned the first graph into a very approximate bar chart. Circuit diagram for basic alarm with delayed trigger.