Syma Forum

Cool mod, that looks really awesome.

Is there any reason why you used a 2x 10 Ohm resistors and 1x 22 Ohm resistor? (was one of the colors too bright?)

Very nice placement of the channel reversal switch, and Gyro mod potentiometer. they look like they were meant to be there.

I especially like the the paddles, do they make any noticeable difference to the flight?

Also as you seem to be modding it to the max, look into getting a set of S111G blades for more thrust, and possibly making/buying a carbon fiber frame.

P.s. I will finish the RF mod guide off over this weekend, sorry it has taken me so long, i've just not had the time lately to do anything fun

have you seen this pic?

with the heli facing you, number the terminals 1-7 from the left.

anode is connected to 1. base color cathode is connected to 6. reverse is connected to 4. forward is connected to 3.

i hope this helps. if not, i can take some better pics. let me know

-al

CPD said

wannabe_pilot said
 

and here's a quick video of an LED mod i did

 

Wow, that is really Cool!!!!! I started watching thinking you meant like lighing in front for going foreward, lighting in rear for reverse, but man, that is really freaking cool!!!

As per this topic anymore, well...

http://memegenerator.net/insta.....e/24024571

I have no idea what so ever what I'm doing here anymore. Good think I'm not going to school for electrical engineering, cause I'm totally lost in space. (and that is why we turn to raptor)

lol i wish i were an engineer..this stuff is so interesting

there's a pic in the album that explains how the LED was wired up. if you can solder its pretty easy

I got my first S107 just over a month ago, here are some of the mods that i've done (the one's I've gotten pictures of, anyway)

hope you enjoy

S107 Mods

and here's a quick video of an LED mod i did

Sorry I haven't been active on the forum recently.

Can you please upload a closeup photo of the place where you soldered it onto the board.

also as azhag said, check that you have cut the tracks.

Raptor said
Here are some pics of the chanel reverse mod, It allows the Silverlit propellers to be used without flipping the tail over.

Edit:does anybody know how to make the images work, without everyone having to resize them when they want to look at them?

Edit: FIXED (hopefully) 😛

i did this mod with a spdt switch but nothing changes when i flip it. would the mod not work if the wire gauge is too small?

Edit(2):
After performing the mod on my S107 transmitter, I can confirm that it is possible to limit the throttle.

This is a easy mod to perform, as it requires only one 22K Variable Resistor, connected with 2 wires.

There is no need to cut circuit traces, and can easily be removed with no damage to the transmitter if it is no longer required.

With this mod, i was able to limit the height that I could obtain with my S107.

I wonder if you can combine this mod with gyro mod:

a) first increase the turning speed with "classic" gyro mod,

b) then use a potentiometer to fine tune sensitivity of the right stick  in controller, and therefore adjust in-flight the turning speed of the helicopter.

Hello again,

I've been mulling over a few more things:

Assuming two batteries in series connected to the motors, could a "turbo" button be created with http://www.radioshack.com/prod.....Value=SPDT that has a ~10k resistor on one leg and a ~5k resistor on the other? I'd wire it to close through the 10k resistor normally, causing the duty cycle to decrease to 55-60% while pressing the button would close the circuit through the 5k resistor, allowing a momentary duty cycle of ~77%

Was originally going to use a 25k linear potentiometer but couldn't figure out how i'd quickly make throttle adjustments while flying without risking overdoing it

-al

Hello Wannabe Pilot , A big welcome to the forum, I hope you enjoy your time here.

I am glad to hear that you enjoy the Gyro mod, and hope that you like you will like the other mods as much.

Wow, that’s a lot of questions, I hope I can answer them all.

wannabe_pilot said

I want to do the IR to RF mod you posted.... but do you plan on finishing the instructions?

Finishing the instructions was put on the back burners until someone showed interest in building the circuit. Now that you have, I will try my best to finish the Instructions within the next 2 days.

wannabe_pilot said

i spent hours trying to see if the main motors could be replaced with more powerful to generate more lift but couldn't find anything pertinent.

what is the rpm of the main motors? are there viable alternatives?

Sorry I don’t know what RPM the motor spins at. And I’m not personally aware of any alternatives.

wannabe_pilot said

have you given more thought to the mod you mentioned? could you explain how to supply more voltage to the motors? how would you implement pwm in conjunction with the tx throttle mod?

1- Please excuse me if I get complicated with this:

To put it simply: If you double the voltage, but half the time the motor is on for. It will run a the same speed, and the same temperature, but give you lots of potential to make it run faster.

2- More power could be supplied by removing both the drive motors positive power cables (red & White) from the control board, and connecting a second battery between them.

Connect the motor wires to the positive terminal of the second battery, and connect the negative terminal to the positive terminal of the first.

3- The helicopter uses PWM all of the time to control the speed of the motors. By controlling the percentage of time the motor receives a “on” pulse. The voltage always stays the same.

I.e. [On 100us: Off 0us] would be full throttle,

[On 75us: Off 25us] would be 3/4 throttle.

[On 50us: Off 50us] would be half throttle.

By using the throttle cap mod set to 50%, with a second battery, the helicopter would have almost exactly the same power as a stock helicopter. The fun starts once the throttle cap is turned up. It should allow more power to be delivered to the motors, but at the risk of the motors overheating, so you would have to try and find the sweet spot between thrust and heat (approximately 65% turn)

wannabe_pilot said

could you explain the advantage of inverting the pitch channel on the tx? does that allow you to spin the tail motor in different directions depending on the rotor you have on?

As you correctly said, it does allow you to spin the tail rotor in a different direction, this is useful for when the tail prop is replaced with a PicooZ blade, that is required to spin in the opposite direction to the stock tail rotor, for forward flight.

wannabe_pilot said

The direct battery mod, what does it mean to have "access to the battery without the diode"? would this allow you to plug an external battery into the charging port and fly the copter that way? or is it in addition to a main battery connected to the circuit board?

The diode is a “safety feature” that only allows energy to flow into the battery when the helicopter is switched off.

It would allow you to plug an external/removable battery into the charging port and fly the copter to increase flight times, any external devices that may need power, it also means that you can use a much more reliable battery charger to charge and maintain your helicopter, such as a balance charger.

However, once this mod is performed the helicopter shouldn't be charged with the USB charger or transmitter, as they will most likely over charge the battery.

If there is anything that I missed of didn't explain properly, just say and I will try and clear it up.