First I guess I should say that I'm new here. I've been dabbing in electronics for a bit now, since I got into Amateur Radio anyways. I've found this site to be quite useful, so I decided I'd join in on the forums. My name is Ryan, nice to meet you.
Now that the introduction is complete, I found this little project online and decided to give it a try. I've always had an interest in creating emergency style lighting, this project looked fun. Here is a link to the youtube video I found this project on. A link to this guy's site is provided on the video (the site is in Dutch).
Ok, there's the schematic, the hex code for the microcontroller can be found at the bottom of THIS PAGE.
I built this with the programmed microcontroller using 2 different leds, both are 3mm, one red (Vf = 2.2V @30mA) one blue (Vf = 3.5V @30mA). The voltages coming out of the TIP50s on the board are around 7.5V which is too high for these leds, basically I'm trying to get this circuit to operate in a state where I can successfully string about 20 to 30 of each red and blue leds together on the "display board" in parallel and have everything come function the way its supposed to. I'm not entirely sure how this guy got the schematic he did.
If anyone can either take a look at this, or build one up of their own and make suggestions, that'd be fantastic. I'd also be nice to get an explaination as to how you got the result you did so I can learn how you came to that conclusion (more knowledge for the noggin).
In addition, if you have any links to, or a schematic of your own of any kind of led flasher like this, or one with multiple flash patterns that you wouldn't mind sharing, I'd love to try them out too.
Let me know if you need any more information from me. Thanks for the help/suggestions.
-Ryan
Now that the introduction is complete, I found this little project online and decided to give it a try. I've always had an interest in creating emergency style lighting, this project looked fun. Here is a link to the youtube video I found this project on. A link to this guy's site is provided on the video (the site is in Dutch).
Ok, there's the schematic, the hex code for the microcontroller can be found at the bottom of THIS PAGE.
I built this with the programmed microcontroller using 2 different leds, both are 3mm, one red (Vf = 2.2V @30mA) one blue (Vf = 3.5V @30mA). The voltages coming out of the TIP50s on the board are around 7.5V which is too high for these leds, basically I'm trying to get this circuit to operate in a state where I can successfully string about 20 to 30 of each red and blue leds together on the "display board" in parallel and have everything come function the way its supposed to. I'm not entirely sure how this guy got the schematic he did.
If anyone can either take a look at this, or build one up of their own and make suggestions, that'd be fantastic. I'd also be nice to get an explaination as to how you got the result you did so I can learn how you came to that conclusion (more knowledge for the noggin).
In addition, if you have any links to, or a schematic of your own of any kind of led flasher like this, or one with multiple flash patterns that you wouldn't mind sharing, I'd love to try them out too.
Let me know if you need any more information from me. Thanks for the help/suggestions.
-Ryan