Modifying an UART Programmer for ESP-01 Programming

The easy way to program an ESP-01 is to use an UART programmer with a tidy slot that fits the PCB such as the following.

Unfortunately, the programmer is not complete because taking the ESP-01 into programming mode involves pulling GPIO0 low and the programmer as pictured has no means to accomplish that.

Using a push switch, and some copper wire, the switch is glued to the back of the ESP-01 programmer and then two copper wires connect the pins that would correspond to GPIO0, respectively the GND pin on the ESP-01.

Now, to program the ESP-01, all that needs to be done, is to hold down the push switch while inserting the ESP programmer into an USB port and the ESP will be switched into programming mode.