3rd November EEG Dev Kit Update

Login to foc.us/me to try the above. Here is the full release note for 0.7.4 - added: AFE full control via AWS IoT - added: tDCS - added: local settings file - added: feature to update bootloader - added: dk.online AWS IoT flag including MQTT LWT message to set dk.online to false - added: dk.mqtt.url attribute to AWS IoT - added: Wi-Fi security failure indication (3 red blinks) - added: switching OFF the 5V power supply when AFE is OFF - modified: triple click timeout changed 1000 ms -> 500 ms - modified: watchdog timer improved - fixed: get_latest.txt URL was fixed (hardcoded) - fixed: WiFi flashing (via jig) is not possible if WiFi file system was damaged - fixed: RGB LED driver may output not exact color - fixed: sometimes hangs at switching OFF - fixed: sporadic device hangs - fixed: battery reading (device doesn't read battery if the button is pressed) - fixed: risk of missing AWS IoT delta messages bootloader: - fixed: device can hung in bootloader in rare cases during updating BLE firmware
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