pansquoy

@AbydosOne@artucI was going the single led route because having two 50dB speakers does not produce 100dB of sound. I figured the same applied to light sources. I remember my physics professor saying to increase whatever is being radiated (sound, light, etc.) it is better to simply have a more powerful source. I was trying to avoid consuming more power since I am battery limited. Thoughts?

I need help selecting an infrared LED to use with my raspberry pi night vision system. I have had a hard time finding a good IR light source but Digikey looks promising. Their LEDs are listed by radiant intensity or mW/sr (milliwatt per steradians). My performance constraints are that I want the LED to emit a +-45 degree angle beam of infrared light so my camera can see at +-30 feet. The power source for the LED, raspberry pi 3B plus, official 7" touch display, NoIR Camera, and LED is a 12V Duracell DURDC12-5F deep cycle AGM battery. I have a DROK voltage converter to take the 12V down to 5V for the PI and it's equipment. I will likely need another voltage converter for the LED because to my surprise there are few 12V options on Digikey that fit my needs. I have an engineering background but am not very knowledgeable with electrical things. I am not afraid of math so hit me. Does anyone know of some other places to get a single powerful IR LED that emits 940nm IR light (I tried Amazon, they don't have many good options)? How do I convert from mW/sr to another unit like lumens or lux? How many lux do I need to see at 30 feet, or is this information only attainable with testing my particular camera?

@bmx6454 thanks so much for pointing that out I had no idea. I am using an i5 6600K. I experiment with my computer so right now I'm undervolting and running the system completely passive. It is silent except for coil whine on the motherboard. I still want the ability to overclock when I get the urge. I tried to put my system's information in my profile and link my pcpartpicker list in my signature. Not sure if that is visible.

I need motherboard replacement advice for my desktop. Backstory and Problem I was reinstalling a Hyper 212 Evo and put the mounting plate on wrong. When tightening the nuts on the back of the board the back plate for the radiator pressed against screws sticking out of the motherboard. Also, the entire system is mounted to a pegboard on the wall with twist ties. There was board flex when I was removing it prior to installing the radiator. The power supply is good after testing. The fans do not spin up and the Ethernet port LEDs do not light up. I do not have a way to test the CPU. There is no video signal. Reasoning I would buy an LGA1151 Z390 for $100 from Microcenter but I need a TOSLINK port to drive my 5.1 surround system. That gives me only two $180 options. Should I buy a used Z170 with a TOSLINK port for about $75 on eBay or a new $100 Z390 and pick up a sound card (maybe a Vantec 7.1 Channel PCIe Sound Card) with TOSLINK for $40 later on? If my motherboard is fine somehow and the issue is something else, I can't return the eBay purchase. If I buy new with the option of returning, I am worried about spending money on a motherboard with an old socket. If I do upgrade my system later, I won't have to pick a board with an optical jack because I will have the sound card. I don't game any more and don't intend to upgrade my desktop any time soon. I have a server and a laptop so I'm not without a computer. Thank you for your advice.