Re: ESP 12f needs 5v not 3.3 (In my case)
Posted: Tue Dec 13, 2016 8:44 am
The problem is that you think a piece of wire is a perfect conductor. It isn't. You need short wire connections between the power connections on the ESP8266 and the Capacitors (plural) that are acting as bypass capacitors and you should have as short a connection to the regulator. The 100uF capacitor is not adequate for providing the bypass requirements at high frequencies (fast current spikes). The power connections need to be close and low impedance.
I am satisfied with your new title as it is accurate.
I have worked continuously since 1985 designing electronic products. PCB design is a major component to my work. It is more than a connection of lines on a schematic. Lots of times people can get away with a marginal design. Sometimes things will crash and there is no discernible reason. So patches are put in place in software that help to recover, but the root cause is still there. My designs need to be as good as possible because of the numbers of products shipped. I have learned, sometimes painfully, about what can be done and what should be done.
I have no problem with the point to point resistor wiring. But I believe that the cause of your problems is the interconnections on the power lines, and the lack of adequate bypassing.
Buy yourself a decent board for development. I'm sure that you will not need 5 volts on the module to get it to program properly.
I am satisfied with your new title as it is accurate.
I have worked continuously since 1985 designing electronic products. PCB design is a major component to my work. It is more than a connection of lines on a schematic. Lots of times people can get away with a marginal design. Sometimes things will crash and there is no discernible reason. So patches are put in place in software that help to recover, but the root cause is still there. My designs need to be as good as possible because of the numbers of products shipped. I have learned, sometimes painfully, about what can be done and what should be done.
I have no problem with the point to point resistor wiring. But I believe that the cause of your problems is the interconnections on the power lines, and the lack of adequate bypassing.
Buy yourself a decent board for development. I'm sure that you will not need 5 volts on the module to get it to program properly.