Once i get it wired up the right way i might ask you to see if im right just so i dnt blow anything
Do u think this would work with 2 68 ohm resistors if not that is fine .....could 3 work?
Do u think this would work with 2 68 ohm resistors
No. It would work with 4 - two on each side. 136 Ohms draws too much current. 272 Ohms does not.
Ok i think i hav 4 and srry but one last ?......it goes digitalpin 2 -4 resistors -ground of six volt supply
Then ground of arduino to ground of 6v supply.......right? Then where does gate go?
Ive got drain and source wired up right ......isnt that a plus(sarcasm lol)
Ok i think i hav 4 and srry but one last ?......it goes digitalpin 2 -4 resistors -ground of six volt supply
Then ground of arduino to ground of 6v supply.......right? Then where does gate go?
pin --////-- --////-- + --////-- --////-- gnd
Connect gate to the +.
Oh ok i get it now.. thank u ill post later to let u know if it works
Alright so i wired it as such please correct me if im wrong.....
Pin2 to resistor plus resistor gate resistor plus resistor 6 volt supply ground all 68 ohm
Arduino ground to six volt ground
Pir sensor to pin 11
Drain to positive terminal of gun
Negative terminal of gun to ground of six volt supply
Source to positive terminal of six volt supply
? Is that right?
Is that right?
If I'm picturing the wiring correctly, yes.
The fact that your transistor got so hot earlier makes me question whether it is still good. As cheap as they are, I'd toss it and use a new one.
Ok thank u so much .....very excited to see the results
I have a build based on Project Sentry Gun, using an electronic paintball marker. On the board I made for that I use a standard NPN transistor acting just as a switch in parallel with the markers normal trigger microswitch.
Power for the paintball marker's board is derived from an onboard 9V regulator on my control board, and then I literally just take the collector and emitter of the transistor to a 2 pin header, which attaches to 2 wires soldered across the existing trigger microswitch. The gun can then be triggered by the trigger microswitch on it's own board, via the Arduino/Processing Sentry Gun software, or manually via another push switch on my control board (again in parallel with the transistor and original microswitch).
Yea that transistor is definitely bad......put batteries into gun and started shooting......thats with no wires into the arduino lol
I have already had one thread aboutthis topic and i got the answers i needed , but i was only getting response from one person.......i would like to run it by a few more people before i go full out and test it.....my project is a motion sensing airsoft gun.....it sits still and once somone walks past pir sensor, it will send voltage to the gate to trigger the airsoft gun. This is how i wired it (picture)(the 6 volts is for airsoft gun)......please correct me if i am wrong.....here is where i am getting transistor from and also the datsheet....http://www.radioshack.com/product/index.jsp?productId=2062618 ..... http://alltransistors.com/mosfet/transistor.php?transistor=2390........this is in words of how i wried it.....Alright so i wired it as such please correct me if im wrong.....Pin2 to resistor plus resistor gate resistor plus resistor 6 volt supply ground all 68 ohm. Arduino ground to six volt ground. Pir sensor to pin 11. Drain to positive terminal of gun. Negative terminal of gun to ground of six volt supply. Source to positive terminal of six volt supply ? Is that right?
By the way i am only 14 and know very little about electronics .....so dont go smarticus on me 
Don't go all cross-posting on us.
Topics merged.
If you are going to shop radio shack, then you might try the below relay and drive it with an NPN transistor.
I dont want to change my design unless i have to....all i want to know is if it will work
I know that there are different ways you can set this up, but all I want to know is if the way I set it up will work.
Although if it does not work, don't be hesitant to correct me if I am wrong.
Also the gun needs all 6 volts to shoot it has to be at least 5.9 or higher. If not it won't be powerful enough to pull back the spring in the gun. This reply is not meant to bump up my topic.
dbutler0526:
I know that there are different ways you can set this up, but all I want to know is if the way I set it up will work.
Although if it does not work, don't be hesitant to correct me if I am wrong.
You have been given a lot of advice, so what is stopping you from trying your setup to see if it works? 