Pictured is my test set up . I used two ( Three actually ) USB wall adapters , the one in the picture being advertised as being a 1A model . The other USB adapter was advertised as being 2A , interesting little tidbit , each adapter is capable of supplying half the advertised current . Also I am using a Charge Doctor to monitor the current going to the charger . So with the 1A adapter that equals around half an amp , and with the 2A adapter about one amp of current . So that means I have a way of limiting current going to the USB charger .
2A adapter ( 1A actual ) Here we have all of 5watt to play with . Depending on the voltage state of the battery being charged , you could very well pump 5Watt into the charger ( less any losses ) . If you do your math , that is a potential charge rate of around 4+ Amps ( depending on how much power is absorbed by the charger ) and the actual voltage state of the battery . ( Yikes ! ) I did have a battery ( old ) that had a resting voltage of 0.6v , and I did use the 2A adapter and it did hit 0.97A on the Charge Doctor ... Single battery charge ( Yes it did charge quickly )
1A adapter ( 0.5A actual ) This is much better in my humble opinion as we have some 2.5Watt to play with . Even with half as many watt's to play with the potential is there to charge a single AA at potentially over 2A .. Charging 2 to 4 AA would...Continue Reading
● App control: Check and adjust its charging status at any time
● 2.1 inches LCD screen display charging mode and battery status
● 5V 1A USB output: Can be used as power bank to charge your devices
● Compatible with Li-ion, LiFePO4, Ni-MH and NiCd batteries
● Charges 4 batteries simultaneously, each of the 4 slots monitors and charges independently
● 4 buttons to set the charging current and battery type conveniently
● CC and CV two charging modes
● Automatically stops charging when battery is fully charged
● Activation function for Li-ion batteries with protection board
● Reversed polarity / short-circuit / over-current / over-charge protection
Posted by old4570 |
Aug 23, 2013 @ 03:10 AM | 2,934 Views
Wow - Seems I havent posted on the forums for a while ..
Lets see :
Weather blows hard ATM , we have had some seriously bad weather this winter and lots of wind , an awful lot of wind ...
Went to school again to do my cert 4 in training and assessment ...
Was it 3 weeks ago we had a nice day , and I flew 3 of my 450's ...
I have been slack , lazy if you will , must be the bad weather , I have 2 heli projects and I should start to do some thing with them ... Like thread locking to begin with .
Its a chore , but needs to be done
Other than that , either or both projects should move rather quickly , and playing with the orange RX ( 3 axis ) can be done indoors ( to see if its capable of holding the tail at least )
Posted by old4570 |
May 06, 2013 @ 10:35 PM | 5,239 Views
Well after getting my Orange Rx with 3 axis gyro , I started thinking about what heli to drop the gyro into ? I was on ebay and saw this frame kit , for $15 shipped I figured it was worth a look see ..
Frame came today , and its been bolted together using two sets of left hand frame panels , thats ok , I was planning on doing that myself as one side is cheaper than the other to buy and ship ( Strange but true ) .. + It will make no difference to how the heli works or flies , though a keen eye may pick up on the fact its assembled from 2 sets of left hand panels ..
Came with canopy mounts / servo mount pads / anti rotation bracket and a complete frame ... For $15USD shipped , this will become the X-heli to test the Orange 3 axis gyro Rx ...
I got myself the Orange 3 axis gyro receiver ( spectrum ) as it really is relatively cheap , and as can be seen , its not overly large for a Rx with a built in Gyro .
Now from what I have seen ( youtube ) these sort of work well , and ver1 and ver2 did show some promise , so when ver3 became available , I thought it time to put my money down and get one ..
Now my main goal is to see if it will work ( receiver ) in a 450 helicopter ..
Since these receiver / gyro's were meant for planks ( RC Aircraft ) I want to test it in a flybar 450 , and see if the 3 axis gyro has anything to offer ..
Certainly be interesting to say the least ..
I will see if the Orange Rx/Gyro can hold the tail first ( looks like it will work with a regular Gyro ) , and then with a regular HH Gyro ..
And then see how much Elev/Ail can be dialed in on the Gyro
Oh well , something interesting to do in anyway ..
The guide is primarily for Noobs [ if you are already flying ] you most likely dont need it . And please , this is not a how to fly guide . Simply my attempt to ease any apprehension Noobs may have about the assembly process .
If there is enough interest , the next book might be on Flight Stability :
Setting up the heli to be stable :
Cover such things as the Gyro [ several of them ]
Maybe the 3 axis gyro
Flight stabilizing solutions such as Flymentor
And cheaper options , weighted blades , blade weight , Flybar weights etc, for Noobs of course since experienced pilots dont need help , its us noobs that need all the help we can get .
One of the things I dont understand ?
Why would a beginner set up a heli for 3D ???
Beginners need helicopters to be stable , solid platforms that provide the pilot with as little excitement as possible , once they progress , they can tune the heli to be more exciting [ responsive ]
An overly responsive [ exiting ] helicopter will most likely cause as many crashes as a poorly assembled and set up one [ possibly more ] for those just starting out . And possibly drive the individual away from the hobby , and we cant have that , can we ?