Matrix user forums

Hi!

Again me It would be nice with the HMC5883L component I2C compass. Unfortunately I am not able to create one. I would be glad If
Somebody Will/could. Please.
Use it in my homebuild lawn

Thank’s in advance.

Br jorgen

No hope for me, ? please

Br.

Jorgen

Hi Jorgen,

I'll have a look for you tomorrow.

So nice Ben, thank¨s in advance...

Br jorgen.

Hi Jorgen,

I'm out the office today but I've made the component for you, hopefully it should work well but let me know.

I'll push it to the update system tomorrow when I'm back in but here is the component file if you want to try it today.

Just copy the file into your "C:\ProgramData\MatrixTSL\FlowcodeV8\Components" folder and restart Flowcode. Note it's hidden by default in Windows explorer so just paste the address into the address bar.

Hi Ben!
Waow, what a service. One of the many reason I love Flowcode Thank´s Ben. I have tryed to test the new component, but I didn´t managed to get it work. I am sure I am doing something wrong. Please have a look on my test.

Thank´s in advance.

Jorgen.

Hi Jorgen,

Try this instead.

Hi Ben!

First seen this now. I make a test this this evening and you hear.

Again thank`s Ben

Br Jorgen

Hi Ben!

Sorry it doesn´t work. Nothing come out in the display It have two module none of them work, Not even a zero in display.
I have update....
But work fine in simulation.

Br Jorgen.

Hi Jorgen,

Hmm,

There are no blocking functions in the component code but it may be the I2C CAL that is blocking. Do you have pull up resistors on the SDA and SCL traces? Internal pull up resistors may also be an option if your target device supports this.

Are you using software or hardware I2C? I believe software mode supports clock stretching which may account for the lock up if there are no pull ups?

Hi Ben!


I change Channelmode from channel 1 to software mode, and now I see in the display for the X, Y, Z = -1, -1, -1 but no changes when I turn the compass.

Yes I have pullup resistor mounted.

These tiny module: https://www.ebay.com/itm/Magnétomètre-3 ... 2749.l2649

Any idea Ben, please.

Br Jorgen.

Hi again Ben!

Further investigation: Suddently, while I was surfing concerning the HMC 5883 I found out that there are two different type, and I have both. ?

On the PCB on the one type I see printed: GY- 271 and on the other GY- 273 but should be the same HMC5883 so why ??

FC8. If I perform the test with the GY - 273 I get the value -1 on X,Y,Z.

FC8. If I test the GY - 271 I get some random number when powering the Arduino up, and then it stop, nothing more happend.

I make a test from here with Arduino IDE "stolen" from here : https://www.instructables.com/id/Tutori ... duino-Uno/
With the GY-271 It work in Arduino IDE. But not with the GY - 273.??? For me, I would be glad if only one of them work in FC8.

(But I want in FC8 for implementing in a another project)


Maybe this help.

Br Jorgen

Hi Jorgen,

I happened to buy one last week so it should hopefully arrive today and I'll be able to investigate why it isn't working for you.

Hi Ben!

Thank you very much.

Br Jorgen

Hi Ben!

If you not have received the module yet, I can send you one.

Br Jorgen

Hi Jorgen,

Sorry for the delay I had some time off to enjoy the nice weather

The module has now arrived, I'll have a go ASAP and let you know.

Hi Ben!

No rush Ben, enjoy the good weather I have asked for help, and then I have to wait. I am glad you will create a component for me. Could be that the they forgot to send one for you.
Look forward to hear from you.
Br Jorgen

Hi Jorgen,

I'm getting -1 too so I have sent off a question to the manufacturer to see if we can work out what is not working.
It could be that the datasheet is not quite right (there's not a lot of info there and what is there is a bit conflicting) so I might try and find a reference code library if I get some more time today.

Hi Ben!

Well, not so easy at all.
If it is to complicatet and need to long time, don`t spend more time on that, I know you are a busy man.

Br Jorgen

Hi Jorgen,

The eBay seller has admitted the sensor he sold to me is not actually the honeywell device and in fact is a similar Chinese device with a different I2C address and different register setup! I wonder if you've had a similar issue?

He's sending me the actual specifics for my device as well as a library so I will try and add this too.

I fond a library for the Honeywell device and my code looks like it should be ok so I'll push the updates I made today to the update system in the morning.

I've now pushed my changes to the HMC5883L component to the update system. Hopefully it will solve the problem you're having assuming you do actually have the HCM5883L sensor

My sensor ended up being a QMC5883L so I'll see if I can create a simple component to drive this now.

Edit, QMC5883L now complete and seems to be working nicely. I've already pushed this to the update system.

Hi Ben!

I am really grateful, thank´s.

Follow up: Working nice.

FC8 component: QMC5883L I use hardware HMC5883L/GY273 Working perfect, Hmm...

FC8 component: HMC5883L I use hardware HMC5883L/GY273 Not working, Either with HMC5883/GY271.

I am more than happy with the result, now I know what I have to use in combination : FC8 component: QMC5883L ,hardware HMC5883L/GY273.

Again many thank´s Ben, now I can continue with my project where I have to use the compass, lawnmover.

Br Jorgen