* you could have a square under the 7805 that's a bit larger than the ic cut away from the ground fill and use some vias to connect the top copper to the bottom (basically use a bottom square as extra heatsink for the regulator) * i'd suggest having the back side almost all ground plenty of room, no need to have components on both sides. * move the 3.3v ldo on the top side of the pcb. Yeah, i guess you need at least something like 500mA for the 5v regulator.Īnyway. so I guess you need at least around 400mA. Also, another page says the start up current can be up to 320mA. and ESP8266 consumes up to 170mA of current when transmitting.
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