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LED support with Hagstrom KE72 (pics)
Sasquatch!:
(Brought on by questions raised in this thread.
According to Hagstrom, this is the spot where they hook up:
Those solder points - from left to right - are:
GND - SCROLL - NUM - CAPS - (blank / not labeled) - 5V
Their reference card reads:
--- Quote ---The KE72 also provides for signals for indication of the current state of the Caps Lock, Num Lock, and Scroll Lock LEDs. These signals are TTL (5V logic) level, and can drive hi-efficiency LEDs through a series resistor. Drivers may be needed to increase the drive current for LEDs or lights that require more than 1.5ma of current. These outputs are active (LED on) when low.
--- End quote ---
I emailed Hagstrom asking if there should be some kind of connectors there. They replied:
--- Quote ---The KE72 does not have a connector in that location. The reason is so that the end user can "customize" that location for their specific needs. That could mean the use of a connector (there are many different types and styles on the market), wiring directly to the unit, etc.
...
The connector pads are spaced at .100", which is a very standard spacing connector, available in one form or another from every connector manufacturer. The type we use is the AMP MTA series connectors, available from digikey.com. Your local Radio Shack would also have headers that could be soldered into that location as well.
--- End quote ---
The person I was corresponding with also told me that they offer a service where they will attach a connector if the unit is shipped to them. I asked for details, and was told:
--- Quote ---Just send it in to us, with a note stating that you would like a connector for the LED control, and be sure to include your return shipping address. We would charge return shipping ($5.33), and $4.29 (includes parts) for attaching the board connector, mating connector, wires, and current limiting resistors for the LEDs. We will even run unit though our KE72 tester to be sure it is in perfect working order. We can ship the unit back within one day of receiving it here.
If you do send your unit in, please send an email notification as well so that we will know when to expect it.
--- End quote ---
So there ya have it.
DZuroff:
You beat me to the punch on the post, Sasquatch, but I called Hagstrom today with the same question and received the exact same response and courteous service. I think the $13.00 (approximate total for shipping both ways and parts) is well worth it to a person like me who has very little soldering skill! :)
MannyTC:
Dang, you guys got more info than I did and I talked to them a few times about it since last week. Never did they offer to add a connector. Weird.
Anyways, I shipped my KE72 for firmware upgrade to them on Tuesday and I just emailed them to see if they can add the connector before they ship it back to me.
Thanks for sharing the info
Sasquatch!:
--- Quote from: DZuroff on February 28, 2003, 11:49:33 pm ---You beat me to the punch on the post, Sasquatch, but I called Hagstrom today with the same question and received the exact same response and courteous service. I think the $13.00 (approximate total for shipping both ways and parts) is well worth it to a person like me who has very little soldering skill! :)
--- End quote ---
You and me both, brother. I probably could solder SOMETHING there, but it'd be ugly as hell.
Hey MannyTC, what's the firmware upgrade that you're getting for?
RandyT:
--- Quote ---....and can drive hi-efficiency LEDs through a series resistor. Drivers may be needed to increase the drive current for LEDs or lights that require more than 1.5ma of current. These outputs are active (LED on) when low.
--- End quote ---
I just want to give you guys a "heads up" on this. 1.5ma is virtually nothing when being considered for driving LEDs.
Fortunately, the write-up Kelsey so graciously provided for boosting the LEDs on the IPAC should also work for the KE72 as both are "active-low". You might have to change the value of the resistors that sit between the output of the KE72 and the LED driver board though.
But if you are thinking that sending your KE72 back in for this connector will keep you from having to solder, I'm afraid that won't be the case in the end. You'll still have more to do afterwards unfortunately.
Just trying to save someone some money in case they didn't quite understand the LED situation with this card.
RandyT