Since this is my first project with an ESP8266-01s I want to test all the relevant parts before I feel confident enough to assemble my final project. First if all i wanted to test if the buck converters are stable enough to provide constant 3.xV for the ESP, even when confronted with different input Voltages. In a second step i want to test the signal strength of the serial output of the ESP and try to raise it to the 5V that are needed for the Roombas serial pins.

To test all this I use a 12V Power supply i got laying around that got shipped with the wrong plug. Its output will get downconverted by the XXXXXX to 3.3V and fed to the VCC and GND pins of the ESP