Answered End Stops causing Arduino board not to work

See the endstop connectors in the top right of the picture? That is where they plug in and the plug should be on the top two wires (- and gnd) not the bottom two wires (- and +) or the endstop will short out the power.

 

One of your stepper drivers looks like it is in backwards. Picture is too small to verify accurately.

Or maybe four are backwards.

 

They need to jumper between S and - (not - and +)

 

All the potentiometers on the stepper driver boards should face the same direction. The pins labeled on the driver boards need to match the labels on the RAMPS board, generally the left pins (as per your picture) should be GND, VDD, 1B 1A, 2A, 2B, GND, VMOT

It looks like you have four correct and one incorrect. You can at damage either the stepper driver board or the RAMPS board if you try to use it this way.

 

As you can see my RAMPS board does not look like that

 

I am not sure if your RAMPS board is just wired wrong (or labeled wrong) or what.
Given the position of the pins I am leaning towards wired wrong. The jumpers should be across the right-most two pins in my photo...(S and -)

 

A number of potential reasons.
1) My picture was from an R1 board, Robo used to use a generic RAMPS 1.4 and swapped with the R1+ to a custom one (but I don't think their custom one looks like yours)
2) even before they switched to custom ones they could have had different batches
3) Maybe someone already swapped yours for another one? Some of the cheaper ones are not what I would call the highest quality It took me 3 new ones to get one working one last time I replaced a RAMPS board. Amazon Prime saved me there.

 

I usually suggest the complete kit if you can swing it since that gives you everything. All electronics.
There are a number of them on Amazon -- this is an example, not an endorsement (shop around).

https://www.amazon.com/kuman-Printer-Controller-Arduino-Starter/dp/B016D6DSBW

If you have an R1+ then the RAMPS board is slightly different and will require rerouting a couple of the the wires (nothing major). If you have an R1 then it is a normal RAMPS 1.4

We have a thread I can direct you to if you need it that shows (in detail) how to convert an R1+ to use a standard RAMPS board.

 

Typically the standard RAMPS and the Arduino Mega can be found for about $15 US each indivdually.

 

The ones on the switch are spade connectors. I am not sure about the ones on the board -- perhaps someone else can chime in. They look like a type of JST connector (but I am not sure).

 

@Michael Miller most replacement RAMPS board kits are fully populated, so you don't have to solder anything to them. The pin headers use a connector called a Dupont connector. I am not sure what other connectors you are asking about.