xl97
Master Member
I'll have to check it out when I get to work..
but thats NOT the same transistor "I" used.. (thats similar to the one memebr used).. follow his wiring diagram.. (if he has the collector, emitter & based labeled)
Iron man motorised faceplate electronics tutorial!!!
- Thread starter 7sinzz
- Start date
I'll have to check it out when I get to work..
but thats NOT the same transistor "I" used.. (thats similar to the one memebr used).. follow his wiring diagram.. (if he has the collector, emitter & based labeled)
Oh yeah that true. it similiar as member used.
Would be great if you could help me out though. TNX!
msleeper
Sr Member
Awesome. I'm going to be buying a cast Patriot helmet so knowing those servos can lift a faceplate is reassuring.
A fill things i need to know before giving you an answer:
Did you use a resistor for the base? the base cant handle much current, you need to limit this current from the arduino, try using a 2.2Kohms resistor on the base, if it is still not as bright as you like, drop that resistor value to something a lil lower than 2.2K
Is the load linked to the collector of the transistor?
follow this for NPN transistors and you will never be wrong again:
The collector collects the load and pass it to the emitter, the emitter emits it to the GND, but just if the base is feed properly.
follow those diagrams:
as you can see on the second diagram, the collector collects the load, and the emitter links it to the GND.
Dear Memebr,
1. yes i used a transistor, had one lying around dont know exactly how much Ohm it is.
2. dont know what you mean.
Here is the setup as it is now (sorry for my quick sketch)
As you cab see here, the voltage going trough the LEDs is not enough. Should be 5V.
Hope you can help me. I want to get this helmet finished.
3. I came across another problem.:cry As soon as i connect the battery to the breadboard, the servos move a little bit and then go back to the correct postition.
How is this possible? it would be really bad when the helmet is close and i turn the power on and the servo move and goed back.... How can i solve this.. Is it in the code, or a electronic issue. I will be placing an on/off switch on the battery positiv cable.
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xl97
Master Member
you connect the battery to the transistor.. not GND from Arduino..
transistor has three pins.. only 1 connects to Arduino.. (same one you have the resistor on)
+ from battery to (resistor) to + on LED
- from battery to transistor
- from transistor to - on LED (this line cold also have the resistor on it if you like..instead of on the + side of the led)
control pin from Arduino (resistor) to transistor (I think yours is D5)
I havent worked through init servo set-up yet myself.. (so cant comment yet)
but 'please'.. look at the diagrams made for you guys.. (they really 'do' work!
http://www.therpf.com/f24/iron-man-...nics-tutorial-170853/index32.html#post2936077
http://www.therpf.com/f24/iron-man-...nics-tutorial-170853/index30.html#post2931061
you see the GND from battery is directly connect to the transistor.. (its the whole reason why you have to use a transistor, because the Arduino cant supply enough current.. so you use the battery to do so..)
(sorry updated the typo)
*look at the diagram:
http://dmstudios.net/misc/IM_eyeCircuit/IronMan_circuitLayout_xl97.jpg
transistor has three pins.. only 1 connects to Arduino.. (same one you have the resistor on)
+ from battery to (resistor) to + on LED
- from battery to transistor
- from transistor to - on LED (this line cold also have the resistor on it if you like..instead of on the + side of the led)
control pin from Arduino (resistor) to transistor (I think yours is D5)
I havent worked through init servo set-up yet myself.. (so cant comment yet)
but 'please'.. look at the diagrams made for you guys.. (they really 'do' work!
http://www.therpf.com/f24/iron-man-...nics-tutorial-170853/index32.html#post2936077
http://www.therpf.com/f24/iron-man-...nics-tutorial-170853/index30.html#post2931061
you see the GND from battery is directly connect to the transistor.. (its the whole reason why you have to use a transistor, because the Arduino cant supply enough current.. so you use the battery to do so..)
(sorry updated the typo)
*look at the diagram:
http://dmstudios.net/misc/IM_eyeCircuit/IronMan_circuitLayout_xl97.jpg
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the guy have a 200ohms resistor on the base of the transistor and expect it to work like a charm
bro, put at least a 2kohms resistor on the base (red.black.black.brown.brown)
the resistor you are using is too low to proper set the base of the transistor.
also, you connected nothing to the transistor, make sure you interrupts just the GND of the leds, and thats it, the 5V line will be the same as a normal wiring, you need to use the transistor just on the negative rail.
bro, put at least a 2kohms resistor on the base (red.black.black.brown.brown)
the resistor you are using is too low to proper set the base of the transistor.
also, you connected nothing to the transistor, make sure you interrupts just the GND of the leds, and thats it, the 5V line will be the same as a normal wiring, you need to use the transistor just on the negative rail.
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you connect the battery to the transistor.. not GND from Arduino..
transistor has three pins.. only 1 connects to Arduino.. (same one you have the resistor on)
+ from battery to transistor
- from battery to transistor
control pin from Arduino (I think yours is D5)
I havent worked through init servo set-up yet myself.. (so cant comment yet)
but 'please'.. look at the diagrams made for you guys.. (they really 'do' work!
http://www.therpf.com/f24/iron-man-...nics-tutorial-170853/index32.html#post2936077
http://www.therpf.com/f24/iron-man-...nics-tutorial-170853/index30.html#post2931061
you see the GND from battery is directly connect to the transistor.. (its the whole reason why you have to use a transistor, because the Arduino cant supply enough current.. so you use the battery to do so..)
Hi guys.
Looks like you guys dont agree on this on.
XL: you say one transistor pin goos to to the (+) from battery, while memebr says transistor only on the negative.
But actually in your scematics you both connected the same way. Only the negatives. Thats what i did.
Also why GND battery directly to transistor? All grounds are connected to eachother arent they?
Djstorm100
Active Member
They are agreeing. Think of a transistor as a relay. The board can't supply the power needed to power servos LEDs and etc. Thus you get regulated volts ( vreg), depending on your battery pack, to the object you are trying to power. Now you have a npn and pnp. The two outside letters are the connection from battery to power object. The middle letter is where the board trigger the transistor to turn "on" much like a relay
NPN uses negative side of the circuit ( what you are trying to power) and positive signal from the board to turn the transistor on
PNP uses positive side of the circuit ( what you are trying to power) and negative signal from board to turn the transistor on
xl97
Master Member
sorry...
I have updated my suggestion, to remove confusion..
you are correct + goes to LED not transistor..
still.. 3 lines to transistor..
NEG in
NEG out
Control line to >> (resistor) >> Arduino D5
+ from battery to (resistors) to + on LED
- from battery to transistor
- from transistor to - on LEDS (this line could also have the resistor on it if you like..instead of on the + side of the led)
control pin from Arduino (resistor) to transistor (I think yours is D5)
better?
and the GND from battery/transistor needs to connect to LEDS... NOT GND from Arduino..
the Arduino isnt capable of putting out that much current...
diagram again:
View attachment 204888
I have updated my suggestion, to remove confusion..
you are correct + goes to LED not transistor..
still.. 3 lines to transistor..
NEG in
NEG out
Control line to >> (resistor) >> Arduino D5
+ from battery to (resistors) to + on LED
- from battery to transistor
- from transistor to - on LEDS (this line could also have the resistor on it if you like..instead of on the + side of the led)
control pin from Arduino (resistor) to transistor (I think yours is D5)
better?
and the GND from battery/transistor needs to connect to LEDS... NOT GND from Arduino..
the Arduino isnt capable of putting out that much current...
diagram again:
View attachment 204888
Picard1471
Active Member
Anyone got wave files for the helmet closing sound for a arduino wave board plus any help with a single servo option to go with it ???
xl97
Master Member
I'll have to dig up the files I used.. (some were posted here.. the others were just googled to be honest)
nice eye pcb's..
did you go with the 5050 leds?
(curious as why you chose them? over say 1206 or another led?)
I had same style done before... and was kinda getting turned off on the current need for them (60mA each 5050 led)
still look great and work great to... just curious is all!
memebr -
where are located at bud? (geographically that is?)
nice eye pcb's..
did you go with the 5050 leds?
(curious as why you chose them? over say 1206 or another led?)
I had same style done before... and was kinda getting turned off on the current need for them (60mA each 5050 led)
still look great and work great to... just curious is all!
memebr -
where are located at bud? (geographically that is?)
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xl97
Master Member
I guess I was asking where are you currently (physically) at/located right now.... like if someone was to send you a package/mail.
I am physically located in Brazil right now, LOL :ninja
msleeper
Sr Member
nice eye pcb's..
did you go with the 5050 leds?
(curious as why you chose them? over say 1206 or another led?)
I had same style done before... and was kinda getting turned off on the current need for them (60mA each 5050 led)
still look great and work great to... just curious is all!
I'll double check with my partner, he's way more experienced in this sort of electronics than I am so I've let him kind of do his own thing.
EDIT
Here's what he said:
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