The global circulation of water is a little like the distribution of power on the board. There is a source and an endpoint, but it’s a closed system. Tributaries may diverge or converge to provide ...

"VFOsys2" is the original version of a digital VFO with analog dial display by Tj Lab(JF3HZB), which can be compiled on Arduino IDE with Board manager "esp32 ver. 2.0.9" and Library "LovyanGFX ver.