thanks for the tip. Just ordered one, will find out whats the story, right down to scancode level :)
debugging a usb keyboard for production now, be sweet to not have not to have convert all the ps/2 test equipment to usb
Dan
Any suggestions on a good type of no clean flux to be used for reworks?
Currently been using Qualitek 302, but it still ends up leaving lots of solder bridges when changing pin thru parts on solder fountain. Advantage is, its not sticky.
The other type I have is GC Electronics, VERY good...
Ok, this sounds a lot more complicated than it is....
I ended up with a crate of surplus standard Travelstar 20gig 2.5" hard drives. I bought an external USB adapter that will allow one to be read via the 2.0 USB port. Works great! Sets it up just like a normal drive, plug and play, all...
the 90s2313 is pretty easy to interface with a ps/2 keyboard. I had to build several for use in manufacturing. Ah the joys of working in a keyboard factory :)
I can send you PADS schematic and C program if interested.
Does anyone know of a way to allow me to plug a USB keyboard into a regular PS/2 port?
I've seen plenty of adapters that go the other way (plug ps/2 mouse and keyboard into a USB port), but none do what I want.
I've looked into building a converter out of a 90S2313, but don't think it'll...
Thanks for the info, was able to figure out the pinouts and got em working. Was listed in ExpressPCB as a TIL311. The integrated latch in them definatly makes things on the circuit side easier, since the software has a lot of other stuff going on to update it very often.
I didn't bother to...
I've been developing a USB keyboard card, using Cypress as the processor. Seems to work pretty well so far, and fairly straight forward. They offer an excellent emulator/dev kit. Kinda long lead time on them, like 12 weeks for 5k of em. And they don't do masked code, so each has to be...
Ok I have several displays, very similar physically to regualar 7-segment displays. Can see a vague outline of a figure 8, and looks like a microproccessor is embedded in it.
I have been trying and trying and can't seem to figure it out.
the part number is Dialco 745-0007 and closest I...
I made a board similar to what you want. Control 147 24v pnematic solonoids via par port. The logic is extremely simple. using 74259 and 74154 decoders and 75468 drivers, to control the 24v
I have a partial schematic drawn up if interested.
jdshaffer@qx.net
I work for a keyboard manufacturing company. We currently use pneumatic robotic "heads", with 132 individual plungers to test each key and its associated scan code. All ran on IBM XTs(!!) with dos 3.3. This stuff is old old old. The interface to the robots is two custom built cards...
well, hate to answer my own question, but I did some experimenting, and the serial cable to connect a PC to 884 is:
884 PC
--------------
Pin 2 | Pin 2
Pin 3 | Pin 3
Pin 7 | Pin 5
On 884, short pins 4 to 5 and 6,8,20
On PC short pins 7 to 8 and 6,4,1
took me a while to figure it out...
I'm trying to get a Gould 884 Modicon PLC to talk a PC via Gray-Soft (version 2.02). I got a serial cable and all should be well and good, but still says cannot connect.
All this stuff is ancient, 1990 at least. I seem to remember back around that time I used to have to use a...
