Pinecil Hall Sensor

[mikerocklewitz]

Hey all,

I ordered some hall sensors off of d-key to add the magnetic shutoff to my pinecils. I followed the schematic from the pine64 wiki and ordered the exact Si7210-B-00-IV(R) as listed. The installation was pretty straightforward - 5 points to solder.

But....

How do i make it work? It makes no difference what sensitivity I set it to, it does not detect magnetics.

[Ralim]

Hi,

If the menu setting is showing the sensor is being detected.

Make sure your magnets are strong. I use a large neodymium one mounted near the iron when in the stand.

Though possible it's being broken in the code path, I'll run some testing tomorrow if I get time.

[mikerocklewitz]

The only setting for the hall sensor that I see is sensitivity under sleep settings.

I assume that's the only setting.

[mikerocklewitz]

Hah.

it works fine. Apparently knowing where the magnets are located in the soldering stand is pretty important.

[discip]

@mikerocklewitz Good evening Sir, is there any chance of you providing information, preferably pictures, of where to install the sensor?

thanks in advance kind regards

[Ralim]

@discip If you look at the pinecil pcb on the top, there is an unpopulated SOT-23-5 footprint between the two pads for the soldering tip contacts. Just solder it on there :) I can get a photo later if need be

[mikerocklewitz]

I apologize for not seeing this. I have a disassemble dead but should be modded board at home. Will get pictures tonight.

Actually ill snap pics when i go on break on 3hrs. I wont keep yall waiting lol

[discip]

Thank you to both of you! The information I got is sufficient, so no additional photos are needed, at least for me. But maybe someone else could use them. 😃

@Ralim One more question though, which of the SOT23-5 do you recommend? There is a bunch of 'em listed here https://files.pine64.org/doc/datasheet/pinecil/si7210-datasheet.pdf. 😅

[Ralim]

You must match the one in the schematic Si7210-B-00-IV(R)

[discip]

Thanks! 😃👍

[mikerocklewitz]

I apologize for not seeing this. I have a disassemble dead but should be modded board at home. Will get pictures tonight.

Actually ill snap pics when i go on break on 3hrs. I wont keep yall waiting lol

Was that 3 hours? Im not gonna circle it, you can play where's wally or find the bodge work

[Ralim]

Ah you have the newer PCB revision. Either way, it should be the only unpopulated spot the right size / shape :)

[discip]

@mikerocklewitz

Was that 3 hours? Im not gonna circle it, you can play where's wally or find the bodge work![20220118_182037.jpg]

Sorry it is me one more time, but it seems that you've photographed 2 times the wrong side of the board 😅, since the hall sensor belongs on the other side. That photo made me think the sensor was preinstalled on my device. 🤣

Nevertheless thanks for trying!

Here is a photo @ritkit made showing the spot where the sensor belongs:

[mikerocklewitz]

Im going to apologize 🤣🤣

I was looking at a chip i removed and posted the incorrect image - any previous images by me are were invalid - this one is correct :)

[discip]

Ah that's a lot better!

No need to apologize, every thing is fine by me! 😃👍

Just wanted to make this clear in case someone would see these photos thinking they are showing the populated hall sensor

[mikerocklewitz]

If admin can clean this up please do

[discip]

@mikerocklewitz If you want, you could clean it up yourself by choosing edit after you click the 3 dots in the upper right corner of the corresponding post. Then just swap the wrong photo with the one you posted last.😊

[mikerocklewitz]

@mikerocklewitz If you want, you could clean it up yourself by choosing edit after you click the 3 dots in the upper right corner of the corresponding post. Then just swap the wrong photo with the one you posted last.😊

Yea. It may be a day or two til i get around to it though. I do not like github on my phone.

Edit: fixed.

[gregknight]

I guess I should’ve looked at the installation instructions before ordering the sensor, any tips on how to solder something to my soldering iron? 😂

[mikerocklewitz]

I guess I should’ve looked at the installation instructions before ordering the sensor, any tips on how to solder something to my soldering iron? 😂

2 Pinecils are better than one 💁‍♂️