Re: [altusmetrum] HMC5883L

[Keith Packard]

Steve Saner  writes:

> Ah, okay, fair enough. In theory I just ordered 10 of them from china at 
> $0.92 each. We'll see how that goes. ;-)

Good luck! I just ordered a MPU-9250 evaluation board from invensense;
that's a newer part that includes a 3-axis compass along with the 3-axis
accel and gyro sensors. We'll probably switch to that for TeleMega v3.0
and EasyMega v3.0.

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Re: [altusmetrum] HMC5883L

[Steve Saner]

On 05/02/2016 06:46 PM, Keith Packard wrote:

Steven Saner  writes:


I am finding a problem, however with the HMC5883L 3-axis compass.
Digikey doesn't have any in stock and in contacting them today, they
tell me it is an obsolete part and won't be restocked.


The current firmware doesn't really do anything interesting with this
data, other than log it for post-flight analysis. If you hacked up the
firmware, you could disable this part and report back bogus values
instead.

Looks like we'll have to update EasyMega and TeleMega to some other mag
sensor in the near future.



Ah, okay, fair enough. In theory I just ordered 10 of them from china at 
$0.92 each. We'll see how that goes. ;-)


Steve

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Re: [altusmetrum] HMC5883L

[Steven Saner]

On 05/02/2016 03:06 PM, Douglas Bertelsen wrote:
> Aliexpress might be a good way to find some parts that are now EOL. I
> have had to do this once or twice in the past. Octopart might result in
> a few US vendors with some residual stock or even suggest the
> replacement part.

Indeed, looks like some options exist here. Thanks!

Steve

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Re: [altusmetrum] HMC5883L

[Steven Saner]

On 05/02/2016 03:06 PM, Douglas Bertelsen wrote:
> (Some digging suggests that the HM5983 might be a replacement; more
> reading required for a definitive answer.)

Yeah, I saw that, except it is discontinued as well.

Steve

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Re: [altusmetrum] HMC5883L

[Steven Saner]

On 05/02/2016 03:07 PM, Jared Szechy wrote:
> Digikey is scheduled to have them in stock in September.
> 
> http://www.digikey.com/product-detail/en/honeywell-microelectronics-precision-sensors/HMC5883L-TR/342-1082-6-ND/2507854

Interesting. Apparently the CSR that I talked to didn't figure that out.
Nonetheless, it sounds like whatever shipment they get in Sept will be
the last one.

Steve

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Re: [altusmetrum] HMC5883L

[Jared Szechy]

Digikey is scheduled to have them in stock in September.

http://www.digikey.com/product-detail/en/honeywell-microelectronics-precision-sensors/HMC5883L-TR/342-1082-6-ND/2507854

On Mon, May 2, 2016 at 3:58 PM Steven Saner  wrote:

> Last month there was a thread on this list regarding the home
> construction of a TeleMega. I have recently gained access to some
> slightly more advanced tools through a local Makerspace and I decided
> that I'd be interested in giving this a go as well. However, I decided
> that I would try my hand at an EasyMega first, so as to not have to deal
> quite so much with the RF stuff on the first try. Also, I have use for one.
>
> I am finding a problem, however with the HMC5883L 3-axis compass.
> Digikey doesn't have any in stock and in contacting them today, they
> tell me it is an obsolete part and won't be restocked. I've also found
> that a few other vendors that I am familiar with don't have any either.
> So I'm wondering what the thought is on this.
>
> Is there a replacement that would work on the current board layout and
> firmware? Do you know of a source that still has some of these parts? Or
> do you have any other suggestions?
>
> Now I do find a bunch of modules built for things like Arduinos and such
> that have these chips on board. Perhaps the solution is to get one of
> those and try to steal the chip. Some are even silly cheap on ebay...
>
> Steve
>
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> Andover, Kansas USA
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Re: [altusmetrum] HMC5883L

[Douglas Bertelsen]

Aliexpress might be a good way to find some parts that are now EOL. I have
had to do this once or twice in the past. Octopart might result in a few US
vendors with some residual stock or even suggest the replacement part.
(Some digging suggests that the HM5983 might be a replacement; more reading
required for a definitive answer.)

Doug

On Mon, May 2, 2016 at 2:58 PM, Steven Saner  wrote:

> Last month there was a thread on this list regarding the home
> construction of a TeleMega. I have recently gained access to some
> slightly more advanced tools through a local Makerspace and I decided
> that I'd be interested in giving this a go as well. However, I decided
> that I would try my hand at an EasyMega first, so as to not have to deal
> quite so much with the RF stuff on the first try. Also, I have use for one.
>
> I am finding a problem, however with the HMC5883L 3-axis compass.
> Digikey doesn't have any in stock and in contacting them today, they
> tell me it is an obsolete part and won't be restocked. I've also found
> that a few other vendors that I am familiar with don't have any either.
> So I'm wondering what the thought is on this.
>
> Is there a replacement that would work on the current board layout and
> firmware? Do you know of a source that still has some of these parts? Or
> do you have any other suggestions?
>
> Now I do find a bunch of modules built for things like Arduinos and such
> that have these chips on board. Perhaps the solution is to get one of
> those and try to steal the chip. Some are even silly cheap on ebay...
>
> Steve
>
> --
> --
> Steven Saner  KD0IJP
> Andover, Kansas USA
> ___
> altusmetrum mailing list
> altusmetrum@lists.gag.com
> http://lists.gag.com/mailman/listinfo/altusmetrum
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[altusmetrum] HMC5883L

[Steven Saner]

Last month there was a thread on this list regarding the home
construction of a TeleMega. I have recently gained access to some
slightly more advanced tools through a local Makerspace and I decided
that I'd be interested in giving this a go as well. However, I decided
that I would try my hand at an EasyMega first, so as to not have to deal
quite so much with the RF stuff on the first try. Also, I have use for one.

I am finding a problem, however with the HMC5883L 3-axis compass.
Digikey doesn't have any in stock and in contacting them today, they
tell me it is an obsolete part and won't be restocked. I've also found
that a few other vendors that I am familiar with don't have any either.
So I'm wondering what the thought is on this.

Is there a replacement that would work on the current board layout and
firmware? Do you know of a source that still has some of these parts? Or
do you have any other suggestions?

Now I do find a bunch of modules built for things like Arduinos and such
that have these chips on board. Perhaps the solution is to get one of
those and try to steal the chip. Some are even silly cheap on ebay...

Steve

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