Congratulations Martyn, 1K! I have a very similar board keeping the peace between a Raspberry pi and an Uno, now I understand 'how' it works :0) Great to see that petulant little frequency generator get owned again, thanks for sharing the code. Thank you and well done on the subs!
Thanks for another clear video. I used a similar device to connect an old Raspberry Pi to the XY-LPWM to make a touch screen controller for my lathe powered by a 2.25hp treadmill motor with an MC2100 controller. Great for setting up and testing. But, 1% steps equate to about 60rpm on my gearing so about to replace the XY-LPWM with Arduino for finer control - not essential but nice. Keeping the Pi touch screen (7" Elecrow 1024×600) front end.
Yes, I think for a lot of purposes the Arduino could give more precision, but I think I'm drawn to this unit because of the attractive back-lit display and of course its low cost. It's a shame that the code on the XY-LPWM is not in the public domain so that we could mess with it.
The display was very useful in calibrating the touch screen settings. I had thought I might stick with the XY-LPWM and, because there is no access to their software, get intermediate values by switching rapidly between adjacent % values. But at the moment I am using a UNO as I can then run a hall effect tachometer and leave the Pi just handling the touch screen interface. Thanks to your video I now understand how the signal level converter works. Have you ever done something similar for connecting a PNP Hall effect switch to Arduino?
Congratulations Martyn, 1K!
I have a very similar board keeping the peace between a Raspberry pi and an Uno, now I understand 'how' it works :0) Great to see that petulant little frequency generator get owned again, thanks for sharing the code.
Thank you and well done on the subs!
Thanks Simon
I have some level shifting boards tucked away somewhere which I believed use opto couplers but now I'll have to look them out and check!
Cool, this is exactly what I needed.🙂
Thanks for another clear video. I used a similar device to connect an old Raspberry Pi to the XY-LPWM to make a touch screen controller for my lathe powered by a 2.25hp treadmill motor with an MC2100 controller. Great for setting up and testing. But, 1% steps equate to about 60rpm on my gearing so about to replace the XY-LPWM with Arduino for finer control - not essential but nice. Keeping the Pi touch screen (7" Elecrow 1024×600) front end.
Yes, I think for a lot of purposes the Arduino could give more precision, but I think I'm drawn to this unit because of the attractive back-lit display and of course its low cost. It's a shame that the code on the XY-LPWM is not in the public domain so that we could mess with it.
The display was very useful in calibrating the touch screen settings. I had thought I might stick with the XY-LPWM and, because there is no access to their software, get intermediate values by switching rapidly between adjacent % values. But at the moment I am using a UNO as I can then run a hall effect tachometer and leave the Pi just handling the touch screen interface. Thanks to your video I now understand how the signal level converter works. Have you ever done something similar for connecting a PNP Hall effect switch to Arduino?
I do have some hall effect sensors, but so far haven't done a video
Is the level shifter power supplied? I only see the GND connected. There are only 3 wires from both sides connected.
I spend some time at 11:24 showing how the level shifter works
Thank you 👍
very nice video my friend.