LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

if you still have io-pins free on the FPGA, put them on test-pads if you can, you can always use them

meister wrote:

if you still have io-pins free on the FPGA, put them on test-pads if you can, you can always use them
 

Ok, I'll delay the pcb fab a day and see what I can do with those lonely 15 GPIOs. I'll have them all via and TP on the back side of the PCB. 
Fine if I just leave them at their 3V3 logic level? Test pins assuming, [USE WITH CARE, pirate skull logo near lol]

Ah f.it, changed my mind. We'll do another board if/when we'll need more/all pins. Larger PCB, wider connector pitch, VFD analog + Relay, etc etc. 

a.k.a Production-level "LinuxCNC-RIO - RealtimeIO Motion Control Board"

Let's get a solid prototype out and tested first. Sending this out as-is. I NEED THIS PCB BACK ASAP loool

It's Official. Left to PCB fab an hour ago and so I should receive this badboy in 5~7days. Looking forward enjoying LinuxCNC-RIO over traced hardware (farewell jumper wires and cheap modules, at last). My very first "True Isolated" motion control board!! 

Awesome, did you use any opto-couplers/digital isolators, are the nine 16-pin IC's only level-shifters?

rthorntn wrote:

Awesome, did you use any opto-couplers/digital isolators, are the nine 16-pin IC's only level-shifters?

Well spotted, correct, those 9 parts are indeed the level shifting. Features digital isolation also, all in one part. I apologize for omitting the schematic for now, once I have it cleaned up and arranged I'll put it up. I'd like to test the board prior though. Regardless, here's a visual below of how it's arranged (ten inputs). Additionally, I'm getting us an ultra-low ripple Isolated 12V Supply done for that board. Plugs right on the main. If we are to isolate this FPGA/Motion Control thing, might as well isolate it true & properly!! 

Here's the cool visuals: