Search found 58 matches

by esba1ley
Sun Feb 11, 2018 10:51 pm
Forum: Spirit Technical Discussion
Topic: Pi data to Arduino via SPI
Replies: 4
Views: 10230

Re: Pi data to Arduino via SPI

FWIW, FPGAs do something similar -- they can literally reconfigure their *hardware* while running, if designed properly. Pretty cool stuff. This would open students' worlds into this concept.

-E
by esba1ley
Sun Feb 11, 2018 10:18 pm
Forum: Spirit Technical Discussion
Topic: Base sketch won't upload
Replies: 11
Views: 20131

Re: Base sketch won't upload

That's really odd... I've programmed many AVR uCs, and avrdude usually works, provided that the fuses didn't get horked up somehow. (Then you HAVE to do an ISP connection, or worse, a dedicated chip programmer). Just so we can be sure we're not missing something that seems obvious to you, but isn't ...
by esba1ley
Sun Feb 11, 2018 9:07 pm
Forum: Spirit Technical Discussion
Topic: Base sketch won't upload
Replies: 11
Views: 20131

Re: Base sketch won't upload

Bastian: See this thread: http://forum.plumgeek.com/viewtopic.php?f=18&t=7897 But the bottom line is I got it work with the Arduino IDE, with these settings in the pull-down menus: Board: "Arduino Pro or Pro Mini" Processor: "ATMega328 (3.3V, 8Hz)" Programmer: "ArduinoIS...
by esba1ley
Sun Feb 11, 2018 9:01 pm
Forum: Spirit Technical Discussion
Topic: Spirit Pi configuration: virtualenv -- necessary?
Replies: 4
Views: 10475

Re: Spirit Pi configuration: virtualenv -- necessary?

To quote Bastian: Since it's not that easy to replace the micro-sd card of spirit... Already done it. Twice. Once to start from scratch with a Raspbian stretch version from RasPi (dated 11-29-17) instead of jessie, and another time to fix something dumb I did in the /boot/ partition. Tweezers are yo...
by esba1ley
Sun Feb 11, 2018 8:56 pm
Forum: Spirit Technical Discussion
Topic: Spirit Pi configuration: virtualenv -- necessary?
Replies: 4
Views: 10475

Re: Spirit Pi configuration: virtualenv -- necessary?

Any python module that *depends* on executing in virtualenv is dubious... I'm a bit leary of using that one.

What package is that? I'd love to take a look at it, I might be able to decouple the two...
by esba1ley
Sun Feb 11, 2018 1:35 am
Forum: Spirit Technical Discussion
Topic: Spirit Pi configuration: virtualenv -- necessary?
Replies: 4
Views: 10475

Spirit Pi configuration: virtualenv -- necessary?

Is virtualenv really necessary? It seems like a nice way to swap between python configurations between projects, but for an embedded system, it would seem like it's one less layer of abstraction/confusion for less savvy users. I've got my Spirit Rover configured without it... but I'm wondering why y...
by esba1ley
Sun Feb 11, 2018 1:32 am
Forum: Spirit Technical Discussion
Topic: Pi data to Arduino via SPI
Replies: 4
Views: 10230

Re: Pi data to Arduino via SPI

Again, seconded. Being able to program the Arduino from the on-board PI via SPI would be awesome. That way we could treat the Pi as a development workstation when needed -- no external computer necessary, if you plug in an HDMI cable and have a bluetooth keyboard/mouse configured to use with the Pi....
by esba1ley
Sun Feb 11, 2018 1:27 am
Forum: Spirit Technical Discussion
Topic: part specs?
Replies: 1
Views: 7836

Re: part specs?

Seconded. Should be in an appendix to documentation. Spec sheets and manufacturer's docs are the engineer's "foundation" of information for a design, even when using something they didn't build.
by esba1ley
Sun Feb 11, 2018 1:24 am
Forum: Spirit Technical Discussion
Topic: Democode errors
Replies: 8
Views: 14709

Re: Democode errors

I'm debugging the same problem. I hope to figure it out this weekend.
by esba1ley
Mon Feb 05, 2018 3:30 am
Forum: Spirit Technical Discussion
Topic: Digging the power features!
Replies: 5
Views: 11347

Re: Digging the power features!

Yeah, they're pretty nice. Now that I can program the AVR directly, I'm starting to play with them, too. You can really tell when the camera is on (in this case, reading 640x480 @ 30fps, streaming to the windowing system). See my blogpost with the plot of the power time series... when the camera is ...