I am trying to make a led project with 2 c bat and a knife switch and it does not work the led says 2.5 volts whats wrong?
Posted by gja132 9 years ago
LED is more and more popular worldwide. I think it should be the trend of the future in the lighting industry
Posted by ledssonledlight 7 years ago
Hey everyone, where can i get some LEDs in the USA from a manufacturer? max price per led is 11 cent! please help. kingbright is a little o the higher side. :(
Posted by led235 9 years ago
I am wiring some LEDs in series-parallel using a 9v battery. The schematic I've been looking at online as a reference shows resistors being used but doesn't say what size. Here is the layout: |-- LED -- LED -- LED -- resistor?--| |-- LED -- LED -- LED -- resistor?--| |-- LED -- LED -- LED -- resistor?--| |--9v-----------------------------------------| I assume it's a simple calculation but I haven't worked with this stuff in a few years. Thanks in advance.
Posted by L3fty 6 years ago
So I noticed there are a lot of LED 'ibles so I am creating a trying to keep the best in this forum.LED HK on Ebay has many lots of 100 of a variety of colors of LED's for only $8.Link: http://myworld.ebay.com/led-hk/The Electronic Goldmine has specific LED's and miscellaneous assortments of LED's.Link: http://www.goldmine-elec-products.com/departments.asp?dept=1088Help this forum grow by commenting with your favorite online LED retailer(s).
Posted by bomberman3 10 years ago
I Need help to build a led light sheet with 100 3mm LEDs they are 3.5v LEDs I have never worked with LEDs before or resistors so please keep it in simple terms. the idea is to use a 12v battery and reduce it to 3.5v supply any ideas comments are appreciated
Posted by YARTZ 10 years ago
I've seen LED throwies, LED floaties but not LED flyies. Since I don't yet have my camera and I don't have an interest in throwies but I know a lot of people do... Anyone fancy making an LED flyies instructable? LEDs and button batteries, taped together and taped to the bottom of helium filled balloons. The balloons then tied together with cotton thread to make a mat of flying LEDs! Any takers?
Posted by Jayefuu 9 years ago
Hi guys, im doing ahistory project and im trying to make it so that i can have a line of LED's that will make LED 1 turn on, and as LED 2 turns on LED 1 turns off, LED 3 turns on LED 2 turns off, and so on and so forth, and activated by a switch? Can someone Help me?
Posted by Demont 7 years ago
Just curious if anybody has done a mini LED cube with surface mount LEDs.
Posted by aliasjanedoe 8 years ago
Is there a way to transmit an LED light wireless to another location without having to attach to the original LED itself? In other words, the transmitting device would capture the LED light when it turns on via a fiber optical cable or other light capturing device and then transmit the light to the receiver. Actually, the light does not have to be duplicated, just some sort of signal sent to the receiver to indicate when the LED is illuminated, but again without having to solder the original LED.
Posted by tmal123 2 years ago
How are these LED strips wired? I know they must be in parallel but what kind of resistors and how many LEDs per parallell? If anyone has a diagram of a good layout on how to string up 48 green LEDs with a 12v power supply, it'd be much appreciated.http://cgi.ebay.com/300mm-Flexible-Led-Strip-w-30pcs-Green-Leds-Extendable_W0QQitemZ200170044029QQihZ010QQcategoryZ66949QQssPageNameZWDVWQQrdZ1QQcmdZViewItemandhttp://cgi.ebay.com/48CM-PVC-LIGHT-STRIPE-STRIP-IN-48-LED-BULB-LAMP-GREEN_W0QQitemZ300169468922QQihZ020QQcategoryZ66949QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Posted by mrshow555 10 years ago
http://www.ebay.com/itm/130922282764?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649#ht_303wt_1084 Includes: One 12 volt LED board with 6 white LEDs and resistor. Six 8mm wide angle white LEDs. Six 5mm wide angle white Piranha LEDs Ten 5mm 15-30 degree white LEDs $6 Shipping included
Posted by luxstar 5 years ago
A guy named "portreathbeach" built this simple 3x3x3 LED matrix. It uses a PIC16F690 in a ZIF socket for the brains. Each layer has nine LEDs with the cathodes tied together. The anodes from each LED are connected to the LED below. The LEDs are multiplexed so that even though all layers appear to be on, they're being addressed individually. Video of the matrix in motion below !!
Posted by =SMART= 10 years ago
Would 4x AA batteries, light up 9 LED's in Parallel?(With a resistor of course) The LED's are 3 volt. I am making an LED belt for my Friend. I wired it up and only the red LED's lit up for some reason.( The colors used are red, green, and 1 blue) is there a problem in amperage or is there a short or something?
Posted by Jordo 10 years ago
Is there a way to control a group of LEDs or even an RGB LED with some sort of temperature sensor/thermometer? I'm new to electronics and wanted to know if you could have a Red LED glow when something relatively hot/warm was near and have a Blue LED glow when something relatively cold/cool was near by. I'm new to electronics and was just curious
Posted by smkoberg 9 years ago
Hello, I am wanting to make an LED circuit consisting of 11 blue LED's and a 9v battery. Can someone tell me which LED's to use, which resistor to use, how the LED's should be aligned (series/parallel), etc. for this? I do not know electricity very well at all and would rather not screw this up. Thank you
Posted by jgruber1 5 years ago
The runner-up prizes in the Get the LED Out! Contest now include $50 worth of LEDs from Phenoptix.Long-time visitors may remember that Phenoptix put up LEDs as prizes in the last LED contest and we're happy to see them here again.
Posted by fungus amungus 9 years ago