I am going to be building a new shield using an Esp32-Cam board and just want to make sure these pins will work for 8 outputs.
Does anyone see any issue using these pins?
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GPIO0: outputs PWM signal at boot, must be LOW to enter flashing mode
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GPIO1: TX pin - debug output at boot
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GPIO2: connected to on-board LED, must be left floating or LOW to enter flashing mode (This would be used for my Relay Trigger) It is connected to the Camera Flash LED onboard
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GPIO4:
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GPIO12: boot fails if pulled high, strapping pin
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GPIO:13:
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GPIO14: outputs PWM signal at boot
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GPIO15: outputs PWM signal at boot, strapping pin
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GPIO16:
If it is thought that one of those will not work I also have the option to use GPIO3: RX HIGH at boot.
Thanks.