Usb interface card module k8055

Instruments PC Generators
1

i would like to thank the engineers that have moved forward in bringing forth other oppourtunities and ideas interfacing to the household computers such as this circuitry…

i am thinking about purchasing one of these items but i am looking for a little for info about them…

i am looking to experiment with switching high voltage via computer means… i want a digital output that i can send to a optocoupler to send the signal but isolate it from the logic… i am looking for a module that can send 1-10khz or above… i also want it to have abilities of pulse sequencing… for instants 220,440,880,… pretty much im looking for a logic that is very versetle in its sequencing and frequency… one that can be controlled by code command and eventually create software to control the functions …

the only info i could find that may even relate says “general conversion time: 20ms per command” under specs online… i think this means the delay in response between the control means (computer) and the controlled (usb circuit) 20ms is .02 of a second making it 1/50th of a second… if this is related to frequency of the digital outputs then they are 50hz max.

all help would be greatly appreciated.

2

Indeed, the output command interval is about 10ms and input 20ms. This is the feature of the low speed USB communication used in the K8055.

3

does velleman have a product that is higher speed that can do the tasks i described?

4

The K8061 /VM140 is faster.
Here an example.
This is the program to output the waveform:

for(int i=0; i<1000; i++) { OutputAllDigital(CardAddr, 0x55); OutputAllDigital(CardAddr, 0xaa); }
And here is the result: