Differences

This shows you the differences between two versions of the page.

--- kits:pwm [2023/10/23 13:10] – [GPIO Settings Page:] removed DAC reference James Sentman
+++ kits:pwm [2023/10/23 13:50] – added firmware reset info James Sentman
@@ Line 78: / Line 78: @@
 ==GPIO Ratings and Safe Usage:==
-The pins brought out to the screw terminals have extra protection to try to protect the CPU from excessive voltage or spikes from static but it is still definitely possible to damage or destroy the CPU by using these improperly. The aux GPIO on the expander connector may have other limitations and not support all the functionality. (BETA: As of this beta version the capabilities of these are not limited in the UI so you can select functions they won’t support.)  The maximum current output per GPIO pin should be limited to 12ma and the total output from all the GPIO pins should be limited to 40ma. In reality the ESP32 seems to support quite a bit more than this without damage but if you do that you are taking your fate into your own hands. If you need to run more than a 5mm led from a GPIO pin directly you should use the GPIO to turn on a transistor or mosfet. There are many diagrams and tutorials available for safely connecting such things to an esp32 or arduino. In the case of an NPN channel mosfet no other hardware is required, in the case of a transistor a 1k or so resistor in between the GPIO output and the transistors gate is required or the transistor will burn itself out fairly quickly.
+On this module no protection is added beyond what is offered inside the chip itself. It should be robust enough to survive casual handling but will not survive a static discharge from you. It is also likely that if used on a long wire that it could be destroyed by a nearby lightning strike as those can induce a large amount of current onto such a line. If you need to use these for more than local control and monitoring please consider the GPIO module as that has extra protections added. Or use other line conditioning or control devices.
+The maximum current output per GPIO pin should be limited to 12ma and the total output from all the GPIO pins should be limited to 40ma. In reality the ESP32 seems to support quite a bit more than this without damage but if you do that you are taking your fate into your own hands. If you need to run more than a 5mm led from a GPIO pin directly you should use the GPIO to turn on a transistor or mosfet. There are many diagrams and tutorials available for safely connecting such things to an esp32 or arduino. In the case of an NPN channel mosfet no other hardware is required, in the case of a transistor a 1k or so resistor in between the GPIO output and the transistors gate is required or the transistor will burn itself out fairly quickly.
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 ===Normal Operation:===
 In normal operation with a valid XTension connection the LED will be dimly lit to indicate that everything is working properly. You can configure the brightness of the LED or even set it to 0 if you do not wish the LED to be lit all the time. This setting is available on the settings web page. If the wifi drops or the connection to XTension is lost the LED will change to the appropriate state to indicate that.
+=====
+====Firmware Reset:====
+There are 2 ways to reset the device to “factory” defaults. At any time the device is powered on and running, hold the setup button for 10 seconds. The status LED will begin to flash rapidly indicating that it is ready to reset. Release the button and the defaults will be reset and then the device will reboot into setup mode so you can reset the wifi information and other settings.
+If the devivce will not finish the boot process or continues to restart for some reason you can reset the settings during the startup sequence.
+After resetting the device wait for the startup animation to begin fading the status LED up and down. During this animation press and hold the setup button. Do not press the setup button during the actual power on phase as this will put the device into local firmware upload mode. If this happens press the reset key and try again.
+After the startup animation completes the device will check for the setup button and if it finds you’re holding it the LED will begin to flash rapidly. Hold the setup button for about 10 seconds until the LED stops flashing and turns on at full. Release the setup button as soon as the LED stops flashing. The device will reset to defaults and reboot into setup mode.