So I have been trying to get my motor to work for more than half a year now, I'm no electronics expert and I have been learning electronics from internet resources as a hobby. Right now I think I have reached a point where I need to ask for help.
I have tried using a L293D H-bridge and a TIP120 transistor but none of it worked. Since the L293D is just an array of 4 transistors so I thought it might be easier to get things working if I just use a single transistor.
I'm using this motor which I think the specs are;
Voltage: 3-6V
Stall Current: 1.7A
So I have a few questions and problem:
1. Do I put the transistor at the red wire or the black wire side of the motor? What are the pros and cons?
2. How do I read the amplification(I think aka DC current gain/Hfe) of the TIP120? In the table it says 1000, in figure 2 it says 250 and in figure 1 it says it varies with collector current(Ic), which one is the right one? (I have even seen some saying it's 2000, like whatt??)
3. Should I use a slightly lower base resistor value than the actual value calculated in order to give more amperage margin to the motor? Or is it a bad idea?
I'm currently using a 9V battery for power, I think that might also be a problem since I heard 9V batteries can only supply 500mA. I'll be changing to LiPO batteries once I find a cheap battery and charger.
I have tried using a L293D H-bridge and a TIP120 transistor but none of it worked. Since the L293D is just an array of 4 transistors so I thought it might be easier to get things working if I just use a single transistor.
I'm using this motor which I think the specs are;
Voltage: 3-6V
Stall Current: 1.7A
So I have a few questions and problem:
1. Do I put the transistor at the red wire or the black wire side of the motor? What are the pros and cons?
2. How do I read the amplification(I think aka DC current gain/Hfe) of the TIP120? In the table it says 1000, in figure 2 it says 250 and in figure 1 it says it varies with collector current(Ic), which one is the right one? (I have even seen some saying it's 2000, like whatt??)
3. Should I use a slightly lower base resistor value than the actual value calculated in order to give more amperage margin to the motor? Or is it a bad idea?
I'm currently using a 9V battery for power, I think that might also be a problem since I heard 9V batteries can only supply 500mA. I'll be changing to LiPO batteries once I find a cheap battery and charger.
