Arduino Ethernet shields use HW method to reset (initialize) the W5x00 chip. They have the W5x00's RST pin hard wired to Arduino's RST pin. If Arduino is reset, the W5x00 should be reset also. However ...

Keyless Door Pin Lock System This Sketch allows the End user to create a PIN Lock System the access is granted when the correct 4 character PIN is entered, when the correct password is typed the text ...

One side of the capacitor connects to the DTR line of the USB-serial chip and the fourth pin from the left on the upper edge. The other side connects to the reset line which appears to be available ...