PiBox » Iron Man » Sensors

First pass is pushed. It compiles but isn't tested. And there are no stubs yet for actually controlling the light switch. This is just a communications implementation.

First, getting back to working with the ESP-01 took a while. My layout on the breadboard was klunky so I reworked it and things stopped working. It took quite a bit of time before I found the problem.

If you power the ESP-01 from it's own 3.3v source, then the FTDI board used to program it must have the same ground. If not then any attempt to program gets stuck while the PC tries to connect to the ESP-01 bootloader. I'll post some pics for this setup later.

After fixing that I can upload and run the old esp8266 sample code I had. It will boot into the WifiManager hot spot for configuring the board using 192.168.4.1 and the AP "imiot". However, the lightsw code, which was based on that, doesn't work.

Now I need to run meld to compare the two modules and see why the new code isn't booting into the wifi manager.

Also: If I use the Arduino IDE, I have it pointing at 1.6.7. I should update this to the 1.8.4 version, using "latest" as a symlink and pointing ~/bin/arduino to that. See also: https://github.com/esp8266/Arduino.

There is a prime example, nearly identical to what I'm trying to do, on this website:
https://www.forward.com.au/pfod/ESP8266/GPIOpins/ESP8266_01_pin_magic.html

The section on Driving a Relay and Reading a Push Button using GPIO0 / GPIO2 is what I need to implement.

FYI: my current code for imlightsw wasn't working because of my incorrect use of GPIOs. The example code above should fix this (along with some hardware mods to the breadboard).

There's also this article, which is probably a little closer: http://acoptex.com/project/304/basics-project-021e-esp8266-esp-01-wi-fi-module-5v-relay-modules-webserver-at-acoptexcom/

Added support for building with either serial console or blue LED using SERIAL environment variable.
Added support for switching to Pair Mode after power on using same button as Config Mode.

• First I need to verify the web server is setup properly and I can reach it.
• Then I need to implement/verify the REST API for the device.
• Then I need to integrate AES encryption for decoding commands and encoding responses.

The first two shouldn't take long, though implementing a command to enable/disable the device has to be tested from the monitor.

The last one may need some fiddling to get right. Hopefully the Arduino AES library support 128 bit encryption which is what the monitor is using.

1. Connect a light to the relay.
2. Connect power to the relay.
3. Test that a request to toggle/set the state changes power to the light.
4. Make sure current state is stored so the state can be reapplied on the next power up. Either that or reset to off on power up.

Most of this is physical stuff. I just need a small battery and LED for the demo or maybe get clever with something a bit brighter.

The code changes are small because I mostly have code for toggling the relay though they are untested. Storing/reloading the state is not handled yet, though that's pretty simple too. I do need to return new state data to the monitor so it can save it. I also need to test the device get function that returns current state data.