Roger Cheng

I'm worried that the voltage difference between ground pins of J6 (flowing through Pi, through lots of wires, and not connected to PCB ground) and J7 (PCB ground plane) will...

If I understand you correctly the planned actions are: * Non-connected ground are intentional and will be left as-is * Partial trace for pin 16 will be deleted, completely disconnecting...

(Original text deleted) UPDATE: Ground pins of J7 are indeed connected to PCB ground, even if they're not connected to Raspberry Pi ground. I had a problem with wires connected...

Here's one example where lack of ground continuity caused issues: https://www.tapatalk.com/groups/jpl_opensource_rover/viewtopic.php?p=1390#p1390

One idea that might satisfy both sides regarding ground: add a large (1 megaohm or maybe 10 megaohm?) resistor connecting signal ground and power ground planes on rover PCB. This...

I can't think of a scenario for influencing E-Stop status externally, either, but I can think of one for reading E-Stop status from another device: Say I create a robot...

With this information I have been swayed in favor of allowing external E-Stop triggers. I like the concept of a fail-safe option like "trainer mode" for RC transmitters, or "dead...

Workaround for people who have already purchased a 455-3156-ND as per current parts list: ignore Figure 17 and assembly instructions, flip around the Arduino connector so notch faces inwards as...

Code is at https://github.com/Roger-random/hadbadge2019_fpgasoc/tree/master/app-xbox

Update: Code has been folded into app-autoexec