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Final Update

Can Someone From @robu help me with this
will this work together or do I need some other components

Can someone please help me with this one

Is this correct?
Will this work ??

Some updates on this plan Now Going to use this https://robu.in/product/2-channel-isolated-5v-10a-relay-module-opto-coupler-arduino-pic-avr-dsp-arm/ A 2 channel relay with this i can simply automate the water pump using two float switches - One at the bottom will be for close the circuit (turn on ...

so I had plans to make a kill switch for the water pump to stop water from overflowing from the tank which is on the terrace, it is a 3 story bungalow type house https://robu.in/product/1-channel-isolated-5v-relay-module-opto-coupler-for-arduino-pic-avr-dsp-arm/ this is the product I saw and started ...

Does robu Pune have any services like this, workshop and like

Well there's no need of microscope or like
But only require that pointy soldering iron

I tried with one that looks like angled chopped
But the problem was it was not heating at the end point it was old and cheap one without any temperature control

Any pointy one would do just need to heated

So I have this router Xiaomi router 4c And in many online forums I have seen that the router has usb capabilities which I confirmed from OPENWRT forum But the problem is the d+ and D- point are so small I tried to solder but I had no experience with it and had old tools, so it wasn't working out So ...