Is it possible to add a MHz display to any motherboard or does the board have to have some sort of hookup for it already? I am confused as to how these things really work? I have a case with a space for a small square display but didn't know if my board would allow it.
They're fake and the numbers are set with jumpers. Turbo is the only connection as it toggles which numbers. I once had a case which just said "HI/LO" with turbo toggle.
I have the turbo switch connected to the fsb jumper selection on a cytrix 5x86 motherboard and configured the mhz led display to show 33 or 40mhz.
wrote:Is it possible to add a MHz display to any motherboard or does the board have to have some sort of hookup for it already? I am confused as to how these things really work? I have a case with a space for a small square display but didn't know if my board would allow it.
The only thing you need is +5V & GND to power the turbo display on which is pulled straight from a molex cable. They don't require any other connections unless they have the ability to show two separate numbers, which is done by simply shorting it's turbo on/off jumpers.
power it on and while it's on test each jumper to see which segments get lit up for both "turbo on" and "turbo off" to set it to your desired speeds (the motherboard doesn't send any signal for this, it's all manual).
As other's have said, if you're using a board with a (TURBO SWITCH) header, that typically connects directly to a turbo button on the front of your case (when pressed your CPU slows down / speeds up), then another header (TURBO LED) goes from the motherboard to the turbo display and simply shorts/opens a jumper on the display to have it change, no data is used for this.
If your motherboard doesn't have any kind of turbo headers, you can simply plug your cases turbo button directly into the turbo LED and have that toggle between your two values, which is meaningless.. hence other recommendations to have it toggle some other jumper like your bus speed.
Sup. I like computers. Are you a computer?
to keep it simple and just add the mhz display to the case you will need a double or quad digit or a double and single digit, a bunch of resistors(330ohm should work if you hook it up to the +5v rail of the psu, but the correct way is to get the forward voltage of the section and the current rating then substract the forward voltage from the supply voltage and then apply ohms law taking in consideration of the current rating of the led and you get the resistor value, those common 1/4 watt +/-5% will work) and check if the display is common anode(the sections shares a common [+] terminal and have various ground pins for [-] a.k.a. GND) or common cathode(the sections shares a common [-] a.k.a. GND pin and have various pins for [+] voltage) then just solder the resistors to the desired section pins and the power supply, and a wire to the common pin(anode or cathode).
wrote:to keep it simple and just add the mhz display to the case you will need a double or quad digit or a double and single digit, a bunch of resistors(330ohm should work if you hook it up to the +5v rail of the psu, but the correct way is to get the forward voltage of the section and the current rating then substract the forward voltage from the supply voltage and then apply ohms law taking in consideration of the current rating of the led and you get the resistor value, those common 1/4 watt +/-5% will work) and check if the display is common anode(the sections shares a common [+] terminal and have various ground pins for [-] a.k.a. GND) or common cathode(the sections shares a common [-] a.k.a. GND pin and have various pins for [+] voltage) then just solder the resistors to the desired section pins and the power supply, and a wire to the common pin(anode or cathode).
Keep it simple huh? Lol
wrote:to keep it simple
...If you want to build your own,
LEDs have 2 pins: anode (V+) and cathode (Gnd). A resistor will limit current so it doesn't pop.
CC = all grounds are linked
CA = all VCC are linked
Wire this then pull out resistors to turn off segments and create the digit
Is there a place where i can buy a small 2 digit display that just simply needs connected to the psu molex cable which shows a certain digit?
Look for "7segment" on eBay.
wrote:Is there a place where i can buy a small 2 digit display that just simply needs connected to the psu molex cable which shows a certain digit?
What you're looking for are called "7 segment" displays. Unfortunately, to my surprise, I'm not seeing any on ebay that were in the style used in AT cases, these simply take a 5v power source and have jumpers on the back to configure the display (what I explained in my first post). The ones I'm seeing now are hobby kit types that are the display only and require the end user to solder on a power source and resistors or program a microcontroller.
You might want to check around Vcfed forums for a user that has some spares or aliexpress, unless somebody here knows a better place to find user configurable displays.. they must exist..
Sorry I can't help turn one up :\.. I figured they were all over ebay. If you do decide to go the solder your own route, it's really not difficult, there are guides out there that will translate what legacy and auzner said into english for non electrical engineers.. Otherwise you may have to find another case with a display to cannibalize..
wrote:Look for "7segment" on eBay.
Most of the ones I'm seeing on ebay are the segmented display on it's own, these will require a resistor on the power input and a bit more soldering and resistors to configure the segments. Not a difficult project with an iron and breadboard.. If you see any ready to go for AT cases post em up.. I should grab a few to have.
Sup. I like computers. Are you a computer?
There's one on ebay for $20 with no molex. It's a 188 digit and would still need soldering.
This is something that would have to be hand made. ebay china dealers are very inexpensive.
You would need:
two-digit ~0.35" 7-seg
~20pk of 330 ohm resistors,
small protoboard
soldering iron
solder
molex harness (hack up a 50 cent peg to molex or sata to molex adapter)
wrote:wrote:to keep it simple and just add the mhz display to the case you will need a double or quad digit or a double and single digit, a bunch of resistors(330ohm should work if you hook it up to the +5v rail of the psu, but the correct way is to get the forward voltage of the section and the current rating then substract the forward voltage from the supply voltage and then apply ohms law taking in consideration of the current rating of the led and you get the resistor value, those common 1/4 watt +/-5% will work) and check if the display is common anode(the sections shares a common [+] terminal and have various ground pins for [-] a.k.a. GND) or common cathode(the sections shares a common [-] a.k.a. GND pin and have various pins for [+] voltage) then just solder the resistors to the desired section pins and the power supply, and a wire to the common pin(anode or cathode).
Keep it simple huh? Lol
Yes it quite simple, even a person with no skill on soldering can do it in 10 minutes, you just have to check if the display is common anode or common cathode, the rest is just soldering resistor to the pin on the display
