New hack: KW203 modded with a STM8S003.
Sorry no PCB as this was a weekend project. There are some additional component changes etc.
Why? Most generic USB meters do not have sufficient resolution to see low current gadgets. My modded meter has a resolution of 1mA and can easily see the current drawn by the LCD meter (3mA) and my USB serial dongle (10mA). It is a handy tool to have.