Do I need to connect the unused terminals to Gnd even if their not used/called?
Do I need a capacitor somewhere
Ldr sensor with it's resistor : ok-ish
Vcc is connected to the Wemos 3.3 powered by 3 1.2v AAA batteries.
I'll provide a fritz diagram this evening if required.
You'll find attached the fritzing file, sorry. (just remove the .txt extension)
You do not really need to connect the other multiplexer inputs to ground for two reasons.
an error whild retranscripting it in schematics.
That shouldn't have happened. Fritzing checks that your schematic view and you breadboard view are consistent and highlights any connections that don't match between the two diagrams.