100KM
keeyen pang
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  • Sabah
  • Malaysia
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keeyen pang's Groups

keeyen pang's Discussions

Receiver freeze up after a few minutes

Started this discussion. Last reply by keeyen pang Jan 22, 2014. 2 Replies

I have a strange situation where the whole system work fine when I first connect the power. But after a few minutes, the receiver suddenly stop working, do not react to transmitter input and the LCD…Continue

Crash analysis needed. No nav_pitch input

Started this discussion. Last reply by Dave Schmitt Mar 10, 2014. 4 Replies

Today I am flying a mapping mission. Plane take off and circle in home location in RTL mode while climb for altitude. ( I set the RTL altitude @ 350 M ) when it reach about 200 meter I put it to…Continue

Tags: Crash

Can not send command via GCS

Started this discussion. Last reply by Hein du Plessis Aug 22, 2013. 1 Reply

I re post my question here hoping someone will lend me a hand.I am running APM 2.73 with RDF900 with default radio setting. I can not send any command from flight data tab, eg : change altitude,…Continue

upload fail

Started this discussion. Last reply by Raph May 13, 2014. 35 Replies

I am having problem with upload command from flight data. Eg Change altitude, restart mission ect. I do not have this type of problem with the previous Mission Planner. When I try to change altitude,…Continue

 

keeyen pang's Page

Latest Activity

Stanley Anak Suab commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"Nice keeyen pang, well done. Im also experimenting with the same kind of battery. As  Gary Mortimer mentioned yes, this will be the game changer. "
Jan 18
Darius Jack commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Daryl, since default capacity of Li-Ion cells deteriorates easily after a number of charging cycles and in result you get sets of P or S interconnected used Li-Ion cells, featuring non-standard capacities, non-standard internal resistances. It…"
Jan 14
Daryl Tingley commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Darius JackAs @Martin said you do not need to have a balancer connection for each cell, just per parallel grouping. Check out the mygeekshow link (https://www.youtube.com/watch?v=adfydRg8PYU) about Li-Ion packs. Im not exactly sure why these more…"
Jan 14
Damian commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"Problem with the cheap Chinese 18650 batteries is that the manufacture is lying and sometime in range of 100% of capacity. This website checks real capacity and it is a joke. Also the Chinese cells will die/deteriorate much sooner than the proper…"
Jan 14
Martin commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Darius Jack, what on earth are you talking about? Li-Ion has much better energy density than LiPo. The maximum output current is much lower, but the airplane's current consumption in cruise is much lower than 1C. You can pretty much double the…"
Jan 13
Damian commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"In general higher the maximum current (C),  more lithium required and higher weight. ZIPPY Flightmax 3000mAh 3S1P 20C                                    …"
Jan 13
Darius Jack commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Daryl, I believe you are right but since chemistry remains unchanged, size unchanged, could you kindly explain me what makes capacity to double ? Ok, I would prefer to buy oversized Li-Ion cells to replace  " Panasonic 18650B Li Ion…"
Jan 13
Daryl Tingley commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@MartinThanks!"
Jan 13
Nicholas Bratton commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@ Keeyen  The power requirement to spin the propeller will be the same. As the cell voltage drops the current draw will have to increase in order to meet the same amount of power. P = I x V"
Jan 13
Martin commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Daryl, 21000/6=3500 mAh. Only parallel cells increase the capacity of the battery."
Jan 13
Daryl Tingley commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"Darius Jack, Thanks for the info on the heat issue. However I think your missing something huge based on your continued talk on Li-Po batteries from your response to me and a few others above. 18650 lithium batteries batteries offer a huge capacity…"
Jan 13
Darius Jack commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Daryl, higher capacity 18650 cells have shorter life-cycle since alike chemistry is packed within the tube of the same volume, so fast charging , fast discharging is an issue, generating more heat. Tesla applied cooling fans to get individual…"
Jan 13
Daryl Tingley commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"Am I doing my math wrong? 4S6P 21000mah of 24 18650 batteries only yields 875mah per battery. Even if the 21,000 mah is 75% of the cells rated capacity for safety reason that is only 1166mah per batt. If that's all…"
Jan 13
Darius Jack commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Keeyen, @Hugues, @Cala, Li-Ion battery packs are generally not fit for drones, much heavier than Li-Po (metal tubing extra weight), limited individual cell capacity due to its size. Building multi-P multi-S Li=-Ion battery pack requires smart…"
Jan 13

100KM
keeyen pang commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"I'll need more test to observe the behavior of the Li Ion battery. From the few flight with It, I notice that the Amp goes higher when voltage drop. Higher Amps means more current drawn so it may contribute to lower flight time. I also notice…"
Jan 13
Johnatan commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@Cala Li-ion batteries can store around 50-75% more energy than Li-Po but if you draw Li-ion batteries more than specific C they are going to give less energy, e.g if a a Li-ion is rated 3400Mah with 0.5C if you draw 2C you are going to get less…"
Jan 13

Profile Information

About Me:
Have been in the RC hobby for 20 years, mainly in airplane and helicopter, and recently multi rotor. Conservationdrones.org Asia team member
Please tell us a bit about your UAV interest
I am totally new in this field. Would like to start with the most simple form of FPV and ultimately would like to build a low cost UAV capable for long range low altitude air survey and petrol. 2013 update : A few Skywalker base UAV had build for aerial mapping purpose. Result is quite promising.
Hometown:
Sandakan

Keeyen pang's Blog

100 KM Mapping / Video conservationdrones

Posted on January 11, 2016 at 3:30am 40 Comments

Introducing the new 100 KM long range Mapping / Video conservationdrones base on Skywalker air frame. With the new power system, the flight duration is more than 3 hours and range over 120 KM with 200 grams payload, typical weight for point and shoot camera such as Canon S 100 GPS on board. The all up…

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6 Mode for Futaba T8J

Posted on June 17, 2015 at 2:30am 0 Comments

https://www.youtube.com/watch?v=xKs8hmfe-VE

Futaba T8J is a reliable and economical 8 channel computer radio. I'm using it exclusively for all my UAV, both plane and multirotor. Normally I only use 3 mode for all my UAV build. For Plane, mode 1 is FBWA, mode 2 is Auto and mode 3 is RTL. For multirotor,…

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What a simple orthomosaic and DEM can do

Posted on September 17, 2014 at 2:00am 15 Comments

https://www.youtube.com/watch?v=3odtsy6l_KE

Using Orthomosaic and Digital Elevation Model to create 3 D model is nothing new. But normally it will require lots of computing power and knowledge. Skyline's TerraBuilder and TerraExplorer make it easy for the average people to make 3D video from an orthomosaic…

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Comment Wall (2 comments)

At 3:51am on April 7, 2014, Shu Hiong Tan said…

Hi Keeyen,

My name is Hiong and I am new to the world of UAVs. While researching the use of UAVs in Malaysia I came across your name and Wee Siong (via ConservationDrones.org). I recently met with Wee Siong and he mentioned that you would be in KL this week, would you have the time to meet with me for coffee while you are here?

Many thanks,

Hiong

Many thanks,

Hiong

At 8:38am on June 7, 2014, masam said…

Thanks for adding me. Nowadays its very satisfying just to watch the aircraft flies itself, performing auto missions. I really must be getting old.

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