saber_holder
New Member
Hey all... Right now I'm in the process of building a replica of the Pulse Rifle prop from the movie "Aliens". If your familiar with it, you'll know that the guns have LED shot counters on the side to show how many bullets are left. For my prop, I'm going to put one of these counters in, but I need some help.
Before I start though, I want to say that I'm NOT planning on having these go or cycle in any sort of order.. They will be static, and will stay on the number I want.
So, I go over to my friendly neighborhood Walmart to get some supplies. As usual, they really didn't know what to get for me, but they had some of the parts that I needed. I got 2 of these 1 digit 7 segment LED counters, some wire, and some AA batteries and battery holsters (its what they reccommended to get).
I get home, and I immiediatly start touching the wires to the pins on the LED (don't flame me about shorting lights out.. I know hardly anything about this). Nothing happens. I hope they arn't burnt out. So I go online and start talking to a fellow prop maker who knows some stuff about LEDs. We talk about it for a while, and eventually find this tutorial:
https://www.iguanalabs.com/7segment.htm
We talk about it for a while, and eventually find out that we need to wire each pin to the VCC (with a resistor in between), and then wire the VCC to the positive end of a 9 volt... But heres the problem.. Where does the negative battery power supply go?
Each LED has a wire coming from it... but only one. Where the heck is the negative supposed to go? Thanks.
Before I start though, I want to say that I'm NOT planning on having these go or cycle in any sort of order.. They will be static, and will stay on the number I want.
So, I go over to my friendly neighborhood Walmart to get some supplies. As usual, they really didn't know what to get for me, but they had some of the parts that I needed. I got 2 of these 1 digit 7 segment LED counters, some wire, and some AA batteries and battery holsters (its what they reccommended to get).
I get home, and I immiediatly start touching the wires to the pins on the LED (don't flame me about shorting lights out.. I know hardly anything about this). Nothing happens. I hope they arn't burnt out. So I go online and start talking to a fellow prop maker who knows some stuff about LEDs. We talk about it for a while, and eventually find this tutorial:
https://www.iguanalabs.com/7segment.htm
We talk about it for a while, and eventually find out that we need to wire each pin to the VCC (with a resistor in between), and then wire the VCC to the positive end of a 9 volt... But heres the problem.. Where does the negative battery power supply go?
Each LED has a wire coming from it... but only one. Where the heck is the negative supposed to go? Thanks.