Hall-O DIY kit

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Hall-O DIY kit

Release status: working

Hall effect endstop sensor
Attribution - ShareAlike
CAD Models
see files
External Link

This page is being edited.


The brave that want to solder the Hall-O themselves, will get all the info required, to do so.

If this is the first time you solder SMD, you have chosen a nice project to begin with.

After this one, you will agree that soldering SMD is easier and faster then through hole.


What`s in the bag

There is a small magnet in the bag, so be careful when you open it.


Content :

- ziplock bag

- Hall-O pcb

- paper containing components

- 1m cable

- magnet

There is a small magnet in the bag, so be careful when you open it.

Content of paper

Hallodiypaper.jpg Click on image for a larger format

Content :

- paper (color may vary :) )

- A1302UA linear hall sensor

- BC848 npn transistor

- 10uF capacitor

- 100nF capacitor

- green LED

- 10K potentiometer

- LM358 opamp

- 2x 560 resistor

- 1K resistor

- 3x 10K resistor

- 22K resistor

- 1M resistor


First of all make sure your soldering iron has a tip of 0.4mm, and make sure its clean.

That part is so important, when soldering SMD, that I will repeat it: make sure the tip is clean.

Clean means, there is no rest tin on it, but also means that when you hold tin to it, the tin immediately flows. So without pressing the tin to the tip.

If it does not flow, cool the iron, and clean it with a knife. Do not cut but rather scrape the tip and then heat it back up while holding tin to it.

Now you have a proper working soldering iron.


When soldering SMD always start with the smallest components and work your way up.

Put tin on 1 pad on the pcb.

Place the component with tweezers on the pcb and hold it there.

Solder that 1 pad to the component, and then the other(s).

If the pcb is placed as above picture,

- The line of the 10uF capacitor is + and goes to the bottom.

- The little green line in the LED goes to the right.

- The no.1 pin of the LM358 is on the lower right of the board.

To determine the no.1 pin on any SMD IC, put the IC in front of you so you can read the text on it. Now the no.1 pin is to the lower left.


The last component will be the hall sensor itself.

Put the pins in the holes, so the sensor is 5mm higher then the pcb and bend the pins 90 degrees.

Now the sensor is aligned with the board.

Cut the pins so they do not stick out on the other side(1mm) of the pcb.

Note that the sensor should stick out about 2 mm from the board, to ensure you can bend the sensor in a 90 degree angle opposed to the board.

Now you are ready to go to the main Hall-Θ page, and setup the rest of the Hall-O.