faster or slower interval) and respond to those. If the server returned data, parse it for settings changes (e.g. On failure, try again for some number of times before giving up. if the upload succeeds, and there is no return data from the server, sleep. An sscanf regexp can be configured to extract up to 3 values from the returned data for local display with linear conversion to engineering units ( Y = mX + b ).ĥ. This allows an external sensor / data logger to be used in addition to or instead of the camera. A "trigger" string to be sent to the peripheral can also be configured.
from a serial port connected to a peripheral device, the status of our external event pin, battery status, etc. mask out and xmit only parts of the picture (where the dials, digits, indicators are) or subtract this picture from the last one taken and send only the difference, etc.Ĥ. In the future, some form of image processing might be added here. If we are waking and connected to WiFi, turn on the LEDs, take a picture, turn off the LEDs, upload the picture to the configured server. (see the esp8266WebSerial project above for more details).ģ. If there is no connection after a few tries, and this was our first power on, go into AP mode and wait for someone to connect and feed us a configuration.
If we are waking, try to connect to the configured WiFi. The idea here is that we can wait for a light to flash on a control panel, or for some other detectable event before powering all the way up to take a pic.Ģ. If this feature isn't desired, it can be disabled in config, or just pull the external pin high. wake up on RTC, check external pin to see if an event has happened during sleep, if not, go back to sleep. Hopefully the code can be ported to lower cost hardware, or even custom hardware in the future.ġ. Ported to ESP32, for easy setup of WiFi router connection, configuration of the pause between pics, what URL to post the pic to, etc.Ī few low cost hardware platforms were suggested atīecause for $12 as a development version, the extra cost is well worth convenience.
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