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Electronics / Re: Problems running motors with sabertooth
« Last post by Admin on Yesterday at 03:05:37 PM »
jkerns is right, the motordriver is going into 'thermal shutdown'.

Ideally, you should use a motordriver of 35 amps.

Another option is to run your motors at a smaller voltage, or PWM to no more than perhaps 70% duty. While the driver might not overheat anymore, the motors would have very reduced torque/rpm.
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Software / Re: Problems uploading to Axon II using McUber
« Last post by Admin on Yesterday at 02:26:10 PM »
Any word from Yeta Corp?

I few more silly questions, but just in case:
- You mentioned you used com port 6. Did you verify that this is the correct port?
- Is the battery fully charged, and what voltage?
- Try a different USB cable (I've actually had one that didn't work straight from the factory)
- Try without the on/off switch, just plug the battery into the battery pin (switch can also be broken)

My last suggestion is to get a hardware programmer . . .
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Software / Re: RTC on axon
« Last post by Admin on Yesterday at 02:17:58 PM »
There is no real time clock on the Axon, if that's what you mean.

You can however use the on-board timer to time-stamp your data, but it will drift slowly over time (a few minutes per day). For most projects that isn't a problem.

Otherwise, you can buy a separate RTC to use with your Axon, or measure the error and then time shift your data.
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Misc / Amazon seeks exemption to test drone deliveries
« Last post by Admin on Yesterday at 02:10:56 PM »
I thought it was just a big PR stunt . . . but it appears Amazon might actually be serious about drone deliveries . . .

http://www.computerworld.com.au/article/549795/amazon_seeks_us_exemption_test_delivery_drones/
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Electronics / Re: Problems running motors with sabertooth
« Last post by jkerns on Yesterday at 07:27:39 AM »
If you are running 35 amp motors through a 25 amp drive, it is likely that the driver is overheating and shutting down.

Too small wires will have a voltage drop across them and waste power and in the worst case melt the insulation, but they would not typically cause the symptoms you describe.
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Need help in just about everything related to robotics,
Thanks.
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Software / RTC on axon
« Last post by the_edge123 on Yesterday at 04:11:33 AM »
I'm interested in getting the axon2.
I would like to know if the RTC is enabled to timestamp sensor data.

--
Fabien
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Electronics / Re: Problems running motors with sabertooth
« Last post by Tommy on Yesterday at 03:12:36 AM »
Quote
I'm running two 24V 35amp motors with a Sabertooth Dual 25A
maceliz, something seems wrong with the above line(using 25A drive with 35A motor?)
do you have a model or part number for the motors your using?

Tommy   
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Electronics / Problems running motors with sabertooth
« Last post by maceliz on July 26, 2014, 09:19:58 PM »
I'm running two 24V 35amp motors with a Sabertooth Dual 25A 6V-24V Regenerative Motor Driver connected to a remote controller and it is working fine but after some minutes the motors stop, my assumption is the wiring is getting to hot as I can feel it and are not allowing the current to flow but I'm not sure.

If I wait some seconds the motors work fine again.

I'm using 12 gauges wires and planning to change it for 8 gauge wires?

Do you think I'm doing the right assumption or might be something different?

Thanks
10
Electronics / Re: Airsoft robot fireing system
« Last post by DiegoChavez on July 25, 2014, 07:39:57 PM »
bdeuell that is a great idea. I was thinking of using a sabertooth but that seams easier and cheaper. It is also smaller.
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