Why different signal ranges of ESP-12E and nodeMCU board?
Posted: Tue Feb 14, 2017 1:44 amI have setup an ESP12-E by soldering on a protoboard. I have used an efficient 100 nF ceramic cap across VCC - GND pins and a 470 uF capacitor across power rails. On the other hand I have a nodeMCU board on a breadboard with no peripherals. Can anybody enlighten me why am I getting a much better range on the nodeMCU board compared to RAW ESP12-E setup when both of them are basically ESP-12E modules?
My first guess would be that the wire connections on my ESP-12E somehow weaken the strength of the signal compared to nodeMCU's PCB connections. But this seems to be a really last resort reasoning and I'm hoping there is something in calibration of these chips that I am missing. Even though I am burning both the flashes with exactly the same software(down to init_data_default and blank.bin files). Is there something else that can impact the performance except code and layout of wires?
If it's helpful I am using an AMS117 3.3V converter on my ESP-12E setup; the same as used on a nodeMCU board.
My first guess would be that the wire connections on my ESP-12E somehow weaken the strength of the signal compared to nodeMCU's PCB connections. But this seems to be a really last resort reasoning and I'm hoping there is something in calibration of these chips that I am missing. Even though I am burning both the flashes with exactly the same software(down to init_data_default and blank.bin files). Is there something else that can impact the performance except code and layout of wires?
If it's helpful I am using an AMS117 3.3V converter on my ESP-12E setup; the same as used on a nodeMCU board.