ESP-01 WiFi Credential Manager
ESP-01 WiFi Credential Manager If you've played with an ESP-01(s), you know they can be a huge pain! Pull this pin to low on boot to start in programming mode. Pull that pin high on boot to run the installed sketch. Seriously, if you simply give this device power, it neither runs the installed sketch nor allows flashing a new sketch. Oh, and if you have a different version of the ESP-01, there may be other quirks. But if you have the patience to work through all of the quirks surrounding this device, it can be a lot of fun though! So the big deal here is the WiFi capability. You can put this little guy on a network and spin up a web server so that you can interface with other devices. All that in something with a footprint smaller than a half-dollar. For my first project, I made a pollution sensor, and I used the ESP-01 to serve measurements over the network. It was pretty cool, but I had the WiFi credentials hard-coded in my Arduino sketch which meant that changing any WiFi sett...