Thanks Charles. Is anyone on the list producing complete DE0-Nano_DB25's for sale?
On 20 Feb. 2018 02:37, "Charles Steinkuehler" <char...@steinkuehler.net> wrote: On 2/18/2018 8:33 PM, Richard Thornton wrote: > Actually I found a post from Charles Steinkuehler saying that it isn't a > 74CBTLV3861 it's a SN74CBTD3861DW which seems to add level shifting, I > think the G540 is tolerant of 3.3 or 5v? The chips serve to limit the voltage seen by the FPGA on input signals. Basically, any signal from 0.0V to 3.3V passes through unchanged, while signals above 3.3V will be 'clipped' to 3.3V. So that works well for inputs from things like 5V encoder or limit switch signals, but any outputs from the FPGA will still only be 3.3V. Whether the 3.3V is enough to drive your motor controllers will depend on the specific model, but most are setup for a 5V-12V input signal driving the LED in the optoisolator. -- Charles Steinkuehler char...@steinkuehler.net -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to a topic in the Google Groups "Machinekit" group. To unsubscribe from this topic, visit https://groups.google.com/d/to pic/machinekit/Qj7VFVrRiYo/unsubscribe. To unsubscribe from this group and all its topics, send an email to machinekit+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout. -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to machinekit+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
