Hi,
A while ago, at the dump recycling shop i scored on seperate days, for $5 at either time, a portable dvd player and a box with a bunch of old broken rc cars (parts from a nitro car and 3 electric chasis with parts still on), and the second time a 7" digital photo display, great condition plus a great condition 4ch medium sized rc helicopter with everything, only things wrong were 1 cell in the lipo battery was inflated, the other i tested is working totally fine strangely enough, also the gear driving one of the two propellors (2 sharing a single shaft) is completely flat on 25% of the gear so realisticly it would never fly, especially since it had no tail propellor that could possibly compensate.
Anyway, with both of those, i got 2 high powered medium sized motors, 2 small servos, 2 large servos, a large brushed dc motor, 2 reversible ESC's 3 car chasis, 3 working 2ch receivers, 1 working 4ch receiver, 1 4ch helicopter AM or possibly FM (says fm but works on am receivers), working perfectly fine, 1 dismantled but possibly honkey dory (ok) 2ch pistol style remote which uses a board that is small and square and can easily transfer into any case, perfect for what i may have in store for it, and then mechanics wise i got a few parts here and there which can also be used, like about 5-6 sets of suspension steering sets, all in perfect condition, a differential drive which in the book is called a gearbox, which works and is presently already connected to the motor and other assorted rods and stuff.
My goal is to hopefully build a decent car with all these parts. There are certainly enough, however the servos i have are quite old, or too small (they are japanese and look perhaps 10-20 years old, the chasis of the car was pcb fiberglass and hard a cast iron bullbar/bumper and wheels with actual detailed rims), so i aim to either rev up the power, or replace them with much larger servos.
In either case building my own servo booster would be ideal, plus i dont like the idea of driving servos directly off the receiver, it just doesnt feel right, like running a motor directly off a 555 chip for PWM.
ANyway, the servos are fairly standard, 3 wires, one white red and black in that order. How do i go about making a servo booster for them? im not fermiliar with how servos get their signals and power but its my understanding that the white wire is a PWM signal, and the red and black are power, in which case a booster would simply be an amplifier on the power input, right?
otherwise, please tell me how i should amplify the power to the servo to operate it safely off the receiver with a little more juice or otherwise accommodate a much larger servo.
Also, the servos and receivers that i have been able to get to work together so far are not from the same cars so i dont know if they are even supposed to be working together or not, ideally i want to avoid wrecking anything. Also this would would be used to possibly use the helicopter 4ch receiver on larger servos, the helicopters servos are quite tiny so im unsure about how compatible it might be with larger servos.
So thats the servo question down, the next thing i wanted to ask was is it possible to push a receiver down/up two channels? specifically i want to use two 2 channel receivers together as a 4ch receiver, but they both use the same channels in the same frequency.
I have quite a few receivers here but i will probably only end up using 1 that will permanently sit inside whatever project i use it in, leaving 2 free that i likely wouldnt use, unless of course they could be used together.
so would it be a matter of changing the crystal? or altering a resistor/capacitor value or some other thing inside the receiver circuit? or is it just not practically possible? though i already have a 4ch receiver, i thought it might be a bit of fun to try and do that.
Lastly, i want to hook up a 5-6v rail comming off the main battery which will be anywhere from 8-12v li-ion, that 5-6v rail would power any lights, the receiver and also be the power input for the servo booster if its required, so as not to use a seperate AA battery pack to power it, since thats just silly.
How should i go about connecting a regulator up to the main battery, would a capacitor and diode be enough to protect it from any spikes and such from the motor?
If i should use a specific regulator and diode, what do you recomend, also, what would be an ideal current range for the regulator to have, so as to ensure im ensuring that theres enough power for the receiver and servo and maybe then some? im not sure about how much your typical servo and receiver use, plus i have different receiver models here so it may vary slightly.
Thankyou
A while ago, at the dump recycling shop i scored on seperate days, for $5 at either time, a portable dvd player and a box with a bunch of old broken rc cars (parts from a nitro car and 3 electric chasis with parts still on), and the second time a 7" digital photo display, great condition plus a great condition 4ch medium sized rc helicopter with everything, only things wrong were 1 cell in the lipo battery was inflated, the other i tested is working totally fine strangely enough, also the gear driving one of the two propellors (2 sharing a single shaft) is completely flat on 25% of the gear so realisticly it would never fly, especially since it had no tail propellor that could possibly compensate.
Anyway, with both of those, i got 2 high powered medium sized motors, 2 small servos, 2 large servos, a large brushed dc motor, 2 reversible ESC's 3 car chasis, 3 working 2ch receivers, 1 working 4ch receiver, 1 4ch helicopter AM or possibly FM (says fm but works on am receivers), working perfectly fine, 1 dismantled but possibly honkey dory (ok) 2ch pistol style remote which uses a board that is small and square and can easily transfer into any case, perfect for what i may have in store for it, and then mechanics wise i got a few parts here and there which can also be used, like about 5-6 sets of suspension steering sets, all in perfect condition, a differential drive which in the book is called a gearbox, which works and is presently already connected to the motor and other assorted rods and stuff.
My goal is to hopefully build a decent car with all these parts. There are certainly enough, however the servos i have are quite old, or too small (they are japanese and look perhaps 10-20 years old, the chasis of the car was pcb fiberglass and hard a cast iron bullbar/bumper and wheels with actual detailed rims), so i aim to either rev up the power, or replace them with much larger servos.
In either case building my own servo booster would be ideal, plus i dont like the idea of driving servos directly off the receiver, it just doesnt feel right, like running a motor directly off a 555 chip for PWM.
ANyway, the servos are fairly standard, 3 wires, one white red and black in that order. How do i go about making a servo booster for them? im not fermiliar with how servos get their signals and power but its my understanding that the white wire is a PWM signal, and the red and black are power, in which case a booster would simply be an amplifier on the power input, right?
otherwise, please tell me how i should amplify the power to the servo to operate it safely off the receiver with a little more juice or otherwise accommodate a much larger servo.
Also, the servos and receivers that i have been able to get to work together so far are not from the same cars so i dont know if they are even supposed to be working together or not, ideally i want to avoid wrecking anything. Also this would would be used to possibly use the helicopter 4ch receiver on larger servos, the helicopters servos are quite tiny so im unsure about how compatible it might be with larger servos.
So thats the servo question down, the next thing i wanted to ask was is it possible to push a receiver down/up two channels? specifically i want to use two 2 channel receivers together as a 4ch receiver, but they both use the same channels in the same frequency.
I have quite a few receivers here but i will probably only end up using 1 that will permanently sit inside whatever project i use it in, leaving 2 free that i likely wouldnt use, unless of course they could be used together.
so would it be a matter of changing the crystal? or altering a resistor/capacitor value or some other thing inside the receiver circuit? or is it just not practically possible? though i already have a 4ch receiver, i thought it might be a bit of fun to try and do that.
Lastly, i want to hook up a 5-6v rail comming off the main battery which will be anywhere from 8-12v li-ion, that 5-6v rail would power any lights, the receiver and also be the power input for the servo booster if its required, so as not to use a seperate AA battery pack to power it, since thats just silly.
How should i go about connecting a regulator up to the main battery, would a capacitor and diode be enough to protect it from any spikes and such from the motor?
If i should use a specific regulator and diode, what do you recomend, also, what would be an ideal current range for the regulator to have, so as to ensure im ensuring that theres enough power for the receiver and servo and maybe then some? im not sure about how much your typical servo and receiver use, plus i have different receiver models here so it may vary slightly.
Thankyou