Gyro inspired by Spartan

[Alan_Chow]

even the setup procedure is simialr to Spartan DS760....

I read it from the internet. Don't know the performance of it.

oWG6ZHs4Ugs

[whisperdancer]

This is their homepage:

http://www.sjgd-tech.com/Engilsh/products.asp?type_id=69

[HELIWARD0]

1, vidio covers the pics mate
2, link wont work

[psindrup]

even the setup procedure is simialr to Spartan DS760....

I read it from the internet. Don't know the performance of it.


Another pirate copy from the East?

Peter

[Scotty T]

I agree, I wouldn't trust that thing.

[Jetleaf]

For all we know it may be supported by Spartan. I'd love to hear Angelos opinion on it. At 168.00 it would be an attractive alternative assuming it has Spartans blessings. The 300 model looks even more like the Spartan, but no price on it.

[Ultraviolet]

It looks like a Spartan clone. It is very likely that they hacked the onboard chip lock and copied the firmware. Unfortunately there is probably very little that Spartan can do about it. The Chinese government allows piracy of all kinds to flourish.

[Angelos]

No, it does not have Spartan's blessings but it is flattering that they choose to make a ds760 lookalike. Unfortunately some people will fall for it as they do with the Futaba GY401 lookalikes from eBay than end up in the bin after the first flight.

-Angelos

[cd5]

The golden rule of this hobby i think is you get what you pay for. I would not waste my time on a ripoff as it would cost more in the long run. Competition is a good thing but piracy ruins legit industry . I think people need to be aware of the difference. If you want a cheaper component and dont need high end stuff, that is fine, as long as it isnt a theft of someone else idea that they have developed and invested money in.

[Scotty T]

Angelos is right on the money. Don't settle for the fakes.

As well, look at the site you order from, can you imagine the support you get for it? UGH!

Once you buy it, you are left in the dark.

Spartan and Solid G is #1 don't settle for anything less.

[CTG1129]

i agree with cd5, you get what you pay for

[DominicD]

This is small community, support the good guys like Angelos.

[psindrup]

This is small community, support the good guys like Angelos.

+1 :thumbup:

Peter

[stock]

+1

501 is still my favorite jeans.

[aballen]

I'd buy a spartan if I could find one is stock! :o

Oops by biterness is showing... seriously though I would not buy this. If Angelos was selling his gyro for $700... that would be one thing, but the spartan is a bargain at its price for one amazing gyro. Even if the knockoff is a perfect clone, I would rather spend my $$ supporting companies like spartan.

[Alan_Chow]

bDsR0pJsqo4

that's the "Configurator card" for this "Clone" Gyro. A similar device from Spartan is not ready in the market right?

It can adjust Gyro Parameter in Setup Menu

1. Servo type selection
2. Gyro Direction / Reverse
3. Rudder servo travel trimming ( Left/Right can be trimmed seperately )
4. Gyro sensitive adjustment ( Clockwise/Anti-clockwise rate sensitive can be adjustment seperately )
5. Deadband adjustment
6. Gyro exponential curve adjustment ( Clockwise/Anti-clockwise Exp. curves can be adjustment seperately )

[Angelos]

And the built quality is "as good as it gets" for a gyro made in China at that price. Attached photo of this gyro that I have had on my desk for the last couple of months showing a "great" soldiering job of the sensor (1). And before anyone argues that this could be photo of one of our gyros.... our gyros don't have component placement print (the white line marked 2) and don't have a LED next to the sensor (3). During manufacturing of our gyros they are all individually inspected with the microscope and solder joints x-ray'ed if there is any doubt.

Also the gyro that I have here is not temperature calibrated which means most units will start to drift as they warm up during flight which we have proven during R&D and decided to invest in the complex and time consuming temperature calibration process. This is very easy to justify when you calculate... gyro powered at around 5V and consumes around 60mA = 300mW heat anticipated in that tiny plastic case. Inside it gets warm rather quick and gets more severe in higher voltages. I also attach a screenshot of our gyro calibration software. The ds760's are loaded in carrier cards that hold 22 gyros and 4 carriers are placed in the environmental chamber where the are cooled and heated while gyro bias data are collected. Under computer control the carrier cards also perform a fully automated test to all functions of each gyro, assign serial numbers to them etc. The carriers are then loaded on a calibration turn table where rotation and response tests are performed. Finally, from all the collected data the PC software can then identify the odd gyro that does not meet the spec and shouldn't be sold.

-Angelos

[Alan_Chow]

And the built quality is "as good as it gets" for a gyro made in China at that price. Attached photo of this gyro that I have had on my desk for the last couple of months showing a "great" soldiering job of the sensor (1). And before anyone argues that this could be photo of one of our gyros.... our gyros don't have component placement print (the white line marked 2) and don't have a LED next to the sensor (3). During manufacturing of our gyros they are all individually inspected with the microscope and solder joints x-ray'ed if there is any doubt.

Also the gyro that I have here is not temperature calibrated which means most units will start to drift as they warm up during flight which we have proven during R&D and decided to invest in the complex and time consuming temperature calibration process. This is very easy to justify when you calculate... gyro powered at around 5V and consumes around 60mA = 300mW heat anticipated in that tiny plastic case. Inside it gets warm rather quick and gets more severe in higher voltages. I also attach a screenshot of our gyro calibration software. The ds760's are loaded in carrier cards that hold 22 gyros and 4 carriers are placed in the environmental chamber where the are cooled and heated while gyro bias data are collected. Under computer control the carrier cards also perform a fully automated test to all functions of each gyro, assign serial numbers to them etc. The carriers are then loaded on a calibration turn table where rotation and response tests are performed. Finally, from all the collected data the PC software can then identify the odd gyro that does not meet the spec and shouldn't be sold.

-Angelos

Hi Angelos,

thanks for your comparison between spartan and the clone one. I feel much better now because I own 2 spartan.

Alan

[raptorheli2]

Looking at the user guide of this gyro that the seller posted on another website it seems that it is missing the 250Hz servo mode that is now available on the Spartan. If it is indeed a copy it will have Spartan firmware version 1.00 or 1.01 and thus is missing more important features that were added later. It won't wait until the Spektrum receiver links before it calibrates, it won't have brown-out and static hit revovery, it won't have bumpless restart, no redundant data storage and some other stuff. It just shows you how much effort Spartan is putting in making their products better and it well worth spending the few extra bucks.

cheers

[SoftwareDrone]

You know you've arrived [as a company] when other companies start making knock-offs of your products. Hat's off to the guys at Spartan.
:thumbup:

[aballen]

Looks like this BGA needed a little more time in the oven


And the built quality is "as good as it gets" for a gyro made in China at that price. Attached photo of this gyro that I have had on my desk for the last couple of months showing a "great" soldiering job of the sensor (1). And before anyone argues that this could be photo of one of our gyros.... our gyros don't have component placement print (the white line marked 2) and don't have a LED next to the sensor (3). During manufacturing of our gyros they are all individually inspected with the microscope and solder joints x-ray'ed if there is any doubt.

Also the gyro that I have here is not temperature calibrated which means most units will start to drift as they warm up during flight which we have proven during R&D and decided to invest in the complex and time consuming temperature calibration process. This is very easy to justify when you calculate... gyro powered at around 5V and consumes around 60mA = 300mW heat anticipated in that tiny plastic case. Inside it gets warm rather quick and gets more severe in higher voltages. I also attach a screenshot of our gyro calibration software. The ds760's are loaded in carrier cards that hold 22 gyros and 4 carriers are placed in the environmental chamber where the are cooled and heated while gyro bias data are collected. Under computer control the carrier cards also perform a fully automated test to all functions of each gyro, assign serial numbers to them etc. The carriers are then loaded on a calibration turn table where rotation and response tests are performed. Finally, from all the collected data the PC software can then identify the odd gyro that does not meet the spec and shouldn't be sold.

-Angelos

[Laurens]

I ordered a spartan yesterday, I don't even want to bother with cheap Chinese clones of whatever product.

[aballen]

where?

[Aberdeen]

You know you've arrived [as a company] when other companies start making knock-offs of your products. Hat's off to the guys at Spartan.
:thumbup:


OR the Cat is out the BAG! :rolling

[[X]Outlaw]

Spartan FTW! I would never trust a rip off