I'm building a glider without a motor ,to power the servos could i just get a servo wire and connect the negative and positive wires to two lithium batteries then connect this to channel 3 on my receiver were the esc usually plugs into?
It depends on the kind of lithium battery. Two cells of Lipo have 8.4V. This is too much for regular servos. You must either use high voltage servos (HV) or a BEC like the HXT UBEC. There are other batteries like 2S LiFePO. This type of battery has lower voltage. You could also try one cell of LiPo. Some receiver and servos work fine even at 3.5V.
Simple answer is NO, and not just for the servos as more often than not they'll be fine, but you will kill the receiver. You have two options, 1/ Use a BEC (battery eliminating circuit) which you connect to your LiPo and the other end is a servo connector which you plug into any unused port on your receiver. This will then power your receiver and your servos. 2/Use a hump pack, either a 4 or 5 cell NiMh (4.8-6v). This is the more simple and cheaper option.
No you will need a BEC if using a LiPo, Now if you use a 4AA NiMh Pack like we did 10 years ago it just plugs in the batt port of the receiver. Look under reciever packs. There are a bunch of diffrent chemestry packs out there. A 2 cell LiFePo4 pack will deliver a nominal voltage of 6.6v
Senator your answer is too simple. I did some research. These are the voltage limits of current receivers models: HoTT: 2.5V-8.4V, Futaba FASST: 3.5-8.4V (newer devices), Orange RX: 3.7V-9.6V, $pektrum: 3.5V-9.6V. I think it is safe to say that there is almost no relevant receiver (newer than 2 years old) that does not work with 2S LiPo. The servos are the problem and that is why they build HV servos. If this was not true, the whole HV story would not make any sense. I predict that in some years we only have HV components. Today, there is no reason why to build servos for 5V. However, I guess we agree that Joshua should use a BEC...
What are the chances that Jiri (555)
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Location: Wü*rzburg, GERMANY and Jiri (402)
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Location: Wuerzburg, GERMANY are one and the same person?
The description says male but the picture shows female connectors. Can anyone who has purchased this item confirm that these are female (socket) connectors rather than male (pin) connectors? For example, the ends are the same as on a servo and would plug into a receiver, correct?
I received them recently. Seems like there has been some confusion regarding the male/female in the previous discussions as well. It connects male-to-male, so pins to other pins. The cable has "female" plugs as on the pictures. I'll use them to connect the quadrocopter board to a receiver.
The leads are exactly what are pictured here. I ordered a lot for multirotor connectors between the RX and board. If you use them side by side, they tend to become really tight .... but it can be done.
What defines a plug to be male or female is the part of the contact. Still not satisfied? see an example in this site, href='http://www.hobbyking.com/hobbycity/store/uploa ds/262084425X554494X31.jpg' These are male or female?
An option for multirotors is to use the female wires/connectors that come with Arduino kits and one will be able to cut down on the ground and power leads from the RX. Not too useful with Arduino boards unless the I/O pinouts are side by side on both ends.
honestly? you think Chinese new year is the problem when i pay for something on the 13th of Jan? thought new year started on the 22nd of Jan to the 1st of Feb?? still doesn't explain why my items are not shipped on 4th of March right? that's over a month from the end of Chinese new year?? looks like hobbyking will be getting a lot less money from me this year :(