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About Me:

i rather not say anything


Please tell us a bit about your UAV interest

might get involved developing


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ctech4285 commented on ctech4285's blog post Anouncting EPM V2 Electro Permanent Magnet and OGCAN CAN BUS daughter card!
"Hello Marc,
I looked into the case and your are right about the bad communication we should not have let you wait 4 days to replay to your email.
So the thing is and I'll add clarification on our website is that 10% of shipments get lost and have to…"
May 4, 2014
ctech4285 commented on ctech4285's blog post Delivery service in Matiguas Nicaragua, first test 7km package delivery
"Hein, We actually only flew 7km but it'll do well over 20km, I never actually flew long enough to run the battery down 45 minutes in hover should be possible. The magnet does not need any power during static operation, only a few Joules to switch.…"
Mar 26, 2014
ctech4285 posted a blog post
Mar 25, 2014
ctech4285 commented on ctech4285's blog post EPM Cargo Gripper V2 Setup Instructions, Auto Mission and manual RC....
"Hello Hugues,
The reason for the delay is that I did not work without one, something to do with the logic the commands get executed.
On the second point, if the EPM makes perfect contact with the target it should not be necessary. If the contact is…"
Mar 1, 2014
ctech4285 posted a blog post
Hello all,I just finished up the instructions let me know what you guy think!click this link if you don't like the formatting :)http://planner.ardupilot.com/wiki/common-electro-permanent-magnet-g...(EPM) Electro Permanent Magnet Gripper…
Feb 28, 2014
ctech4285 commented on ctech4285's blog post Anouncting EPM V2 Electro Permanent Magnet and OGCAN CAN BUS daughter card!
"No, the flight computer should issue commands either to the EPM or the OGCAN card. The plan is integrate this into ardupilot code as a mission command"
Feb 13, 2014
ctech4285 commented on ctech4285's blog post Anouncting EPM V2 Electro Permanent Magnet and OGCAN CAN BUS daughter card!
"The Can Bus daughter card only provides a Can Bus interface and it looks like it will become standard for everything within the year.
There are numerous advantages with can bus, this is a good discussion on this:…"
Feb 13, 2014
ctech4285 commented on ctech4285's blog post Anouncting EPM V2 Electro Permanent Magnet and OGCAN CAN BUS daughter card!
"Hello Gary,
That would be awesome, I been trying to get to the wiki but there is never enough time
I just added you to the chat with pavel on skype
Euan, really nice job!!"
Feb 13, 2014
ctech4285 commented on ctech4285's blog post Anouncting EPM V2 Electro Permanent Magnet and OGCAN CAN BUS daughter card!
"Hello Hugues,
The price including shipping is 49.99$
I would not recommend at all to go over 1.5kg per unit. Although the holding force is higher the slightest vibration or a not so perfect mate will cause your cargo to drop.
And yes you can link as…"
Feb 13, 2014
ctech4285 posted a blog post
We are announcing Version 2 of the EPM, Electro Permanent Magnet and the OpenGrab CAN daughterboard (OGCAN). A simple solution for cargo gripping for UAV’s and robots.Introduction EPM V2Operating principle explained in this…
Feb 13, 2014
ctech4285 posted a blog post
Hello,So last time I went over how we mask PCB's now I am going to show how we etch the boards in 3 minutes flat. Traces down down to 8mil, 1 out of 50 boards might fail.Here we have part two, let me know what you…
Jan 17, 2014
ctech4285 commented on ctech4285's blog post How we make our PCB's Nicadrone.com
"yeab thinning with ethanol, spraying and keep water out is really the key. 10 pin DFN's are really not a problem.
I haven't tried toner transfer so no idea if that's a useful process"
Jan 16, 2014
ctech4285 posted a blog post
Hello;I been getting a lot of emails about how we make our PCBs so finally had some time to post something:Making PCB for production runsWe are in a 3rd world country so we can't get PCBs/asm'ed in anything under 8-10 weeks so we devolved small…
Jan 15, 2014
ctech4285 commented on ctech4285's blog post EPM Cargo Gripper. Simple easy method for gripping and relasing cargo on a copter
"Ah nice,
I would love to see some pictures!
Hmm if i hear from more people that they like 45mm form factor I'll be happy to accommodate this.

>Question is - if it comes with a 1mm silicon target square, can we order spares?
Yeab, just added it…"
Jan 14, 2014
ctech4285 commented on Trent at MyGeekShow's blog post Flying my Raptor140 at 109mph/176kph
"oh very nice, I can see that the prop velocity is around 200km/h, good match for 135km/h flight speed. I am curious what the range would be if this was setup for endurance, eg low rpm large prop for optimized for the 30-45km/h speed."
Dec 21, 2013
ctech4285 commented on ctech4285's blog post EPM Cargo Gripper. Simple easy method for gripping and relasing cargo on a copter
"There is a 1mm steel plate under the PCB, I did a lot of experiments and never been able to cause damage to the PCB"
Dec 20, 2013
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