The Raspberry Pi controlling the Robotic Arm has been crashnig, every couple of days. I think I know why - it's the USB-to-serial converter. Those work fine for ordinary PCs, but not for Pis. I thought I found one that didn't crash, but it seems that it isn't entirely crash-proof.
So I've replaced the serial-controlled relay box, with a USB-controlled one. Hopefully, that will stop these annoying crashes.
And I'm working on a replacement for the Night Mail.
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The Raspberry Pi has a bunch of digital IO lines you can wiggle up and down at will. If this USB box doesn't work, and you'd like to try the direct approach, let me know: I'm mjouk on geocaching.com.ReplyDelete