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Mon 2019.10.28
'default address is 0x3F. I thought I had actually tried that out of frustration, but I guess not.'
Just in case you had actually tried 0x3F:
'I have tried with and without "var i2c = new I2C();"'
Wouldn't matter as described as follows:
@calebbrewer if it hasn't been discovered yet, from post #5, L1 and L2 are not the same initialization. (e.g. function setup is not applied to var i2c)
FYI me thinks that is what Gordon was pointing out in #6
Robin
SWEET! That clicked in my brain! The chip os an pcf8574AT. It's default address is 0x3F. I thought I had actually tried that out of frustration, but I guess not.
Thanks for the help! It is usually something simple I have over looked.