RS232 Serial Interface that I built to work on various electronics that had tty access.
I built this Serial TTY device to access the boot loader on my WRT54G router. All I needed to do was solder a header onto the motherboard and then telnet into the device. It’s also useful on other electronics that use the RS232 protocol.
Close up of the enhanced RS232 chip, the MAX233A.
Rearview of homebrew RS232. Breadboard with hot glue to prevent shorts.
JTAG header (Flash) on left and Serial header (TTY) on the right.