nametc3 Posted August 23, 2006 Report Share Posted August 23, 2006 Hi !help me !I have a display metter by LED .I want to change display to LCD. Because I work outdoor so I can't see it. Quote Link to comment Share on other sites More sharing options...
ante Posted August 23, 2006 Report Share Posted August 23, 2006 Hi,We need to see the schematic. Quote Link to comment Share on other sites More sharing options...
MP Posted August 27, 2006 Report Share Posted August 27, 2006 Are you sure you didn't post this backwards? LED will normally be brighter outdoors than LCD. If it is black LED, perhaps you want to go to the brighter red LEDs.Like ante said, you will have to post the schematic before successful changes to the circuit are possible. MP Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 27, 2006 Report Share Posted August 27, 2006 You can't see an LED display outdoors in the sunshine. But an LCD display is fine in the sunshine. Quote Link to comment Share on other sites More sharing options...
Guest nanop Posted August 27, 2006 Report Share Posted August 27, 2006 You can't see an LED display outdoors in the sunshine. But an LCD display is fine in the sunshine.I think they're both the same ;). Ever seen huge LED boards along streets like gas stations, ads, etc. Those huge TVs in Times Square are made out of lots and lots of RGB LEDS. There are also OLEDS that are being developed to be used in TV. :)It really depends on what kind it is. Like the LCD on a calculator is nothing compared to a LCD moniter. Same with LEDS.LCDs are usually used for simplicity ( you don't have to solder, waste time buiding). They are also good at to look at MEDIUM range.LEDS are usually used when u look at it at CLOSE to FAR Range. They're also a pain to build up a whole grid of them. But they're cheap!! Quote Link to comment Share on other sites More sharing options...
MP Posted August 28, 2006 Report Share Posted August 28, 2006 Yep. Depends on what he has. Hope we can see a schematic.MP Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 28, 2006 Report Share Posted August 28, 2006 He has a meter with an LED 7-segment display that he can't see when it is sunny outside.He wants to convert it to an LCD 7-segment display, not to an LCD monitor.The LCD digits on my multimeter are black on a white background and are very clear even when the sun shines directly on them.Outdoors LED displays have a shade covering them from sunlight. I don't need to shade my LCD multimeter. Quote Link to comment Share on other sites More sharing options...
nametc3 Posted August 28, 2006 Author Report Share Posted August 28, 2006 Yes, thank AudioguruI want to convert LED 7-segment to LCD 7-segment digitsI don't know electronic circuit, but my display meter have 4 LED and not automatic point help me circuit to convert Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 28, 2006 Report Share Posted August 28, 2006 An LCD display needs a completely different circuit than an LED display. It might be easier and cheaper to buy a new one.What does it measure? I have seen new LCD multimeters selling for $10.00CAN. Quote Link to comment Share on other sites More sharing options...
Guest nanop Posted August 28, 2006 Report Share Posted August 28, 2006 BTW, LCDs also need AC electricity to make them work. DC would damage them. Quote Link to comment Share on other sites More sharing options...
MP Posted August 29, 2006 Report Share Posted August 29, 2006 You can't see an LED display outdoors in the sunshine. But an LCD display is fine in the sunshine.You can't see either one well in the sunlight. It is the backlight that helps you see the LCD display. The black segment LED and black segment LCD displays both are hard to see in sunlight without a light background. Perhaps you just need a backlight. Perhaps a replacement display with white background. Again, who knows how to help without a schematic or data on what you are using. All I see here is a lot of debate of LED vs. LCD.nametc3: Where is your information? Some designs are easy to convert and some are not.MP Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 29, 2006 Report Share Posted August 29, 2006 Both my LCD display multimeters, all my LCD display calculators and my LCD display watch are very easy to see in the sunshine. They don't have backlights.None of my LED display gagets can be seen in the sunshine.The opposite occurs in total darkness. Quote Link to comment Share on other sites More sharing options...
MP Posted August 29, 2006 Report Share Posted August 29, 2006 This thread isn't about you and your gadgets audioguru. Please allow the subject to get back on track. This is not helpful to nametc3. He is looking for advice on how to modify a circuit. He should post more information to get that help.MP Quote Link to comment Share on other sites More sharing options...
Guest nanop Posted August 29, 2006 Report Share Posted August 29, 2006 Maybe just one thing could fix your problem without even replace the display.[glow=green,2,300]See if using a anti-glare spray, or putting a anti-glare transparent cover over the meter screen would help.[/glow] ;)Thye have those in many places. OR just search the web! Quote Link to comment Share on other sites More sharing options...
RDL2004 Posted August 29, 2006 Report Share Posted August 29, 2006 Remember that LEDs are Light Emitting Diodes, they can only be seen by the light they give off. LCDs are Liquid Crystal Displays, they do not give off light on their own and can only be seen by the light that shines on them or through tham.The back-lit LCD screens on computers and TVs are quite a bit different from the typical reflective types used on meters and wristwatches. The reflective type of LCD is usually very readable in sunlight, being very black on a gray background. The typical LED display gets very washed out and hard to see in bright light such as outdoors, since all it can do is emit light. It has to be a very powerful and expensive LED to be seen in sunlight. Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 29, 2006 Report Share Posted August 29, 2006 Thanks RDL, that is the same as what I have been saying.Nametc3 started this topic because he can't see his LED display in sunshine, so he wants to convert it to an LCD display that can be seen. Quote Link to comment Share on other sites More sharing options...
Guest nanop Posted August 29, 2006 Report Share Posted August 29, 2006 This thread isn't about you and your gadgets audioguru. Please allow the subject to get back on track. This is not helpful to nametc3. He is looking for advice on how to modify a circuit. He should post more information to get that help.MPThe topic and question is how should he modify the circuit to convert a LED to LCD display. Not about which one's the best or the better one.Any help? Quote Link to comment Share on other sites More sharing options...
audioguru Posted August 29, 2006 Report Share Posted August 29, 2006 The topic and question is how should he modify the circuit to convert a LED to LCD display. Not about which one's the best or the better one.Any help?I have already said, "An LCD display needs a completely different circuit than an LED display. It might be easier and cheaper to buy a new one." I also said that an LCD multimeter can be purchased for only $10.00CAN.You can see the difference on the datasheet:http://www.intersil.com/data/fn/fn3082.pdf#search=%22icl7106%22ICL7106= LCDICL7107= LED Quote Link to comment Share on other sites More sharing options...
MP Posted August 30, 2006 Report Share Posted August 30, 2006 Well said, NanOp.MP Quote Link to comment Share on other sites More sharing options...
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