Search found 181 matches

by Kevin
Sun Feb 25, 2018 9:29 pm
Forum: Spirit Technical Discussion
Topic: issues with PI SD Card .. Failing to boot... and a Heartbeat between PI and Arduino
Replies: 8
Views: 833

Re: issues with PI SD Card .. Failing to boot... and a Heartbeat between PI and Arduino

Okay guys and girls. Just posted the schematic of all the connections between the 3 processing centers. I did think of a way to get the PIC to shut down. It would be possible to improve the shutdown sequence based on seeing current drop off (when the Pi shuts down). Someone would have to give it som...
by Kevin
Sun Feb 25, 2018 9:08 pm
Forum: Spirit Technical Discussion
Topic: pin mapping between Raspberry Pi and main board connector?
Replies: 3
Views: 506

Re: pin mapping between Raspberry Pi and main board connector?

Just posted the schematic. It's a sticky at top of the discussion. :)
by Kevin
Sun Feb 25, 2018 9:05 pm
Forum: Spirit Technical Discussion
Topic: Spirit Schematic
Replies: 2
Views: 613

Spirit Schematic

Okay everyone, finally have the schematic of all the connections to the 3 processing centers of Spirit. Took a while to get back to cleaning it up. http://files.plumgeek.com/technical/spirit/Schematic_Spirit_MCU_Rev02.pdf Here's a quick overview of what you're looking at...... 1) The processor on th...
by Kevin
Sun Feb 25, 2018 8:30 pm
Forum: Spirit Technical Discussion
Topic: issues with PI SD Card .. Failing to boot... and a Heartbeat between PI and Arduino
Replies: 8
Views: 833

Re: issues with PI SD Card .. Failing to boot... and a Heartbeat between PI and Arduino

Shutdown is occurring correctly. It seems that management of the power button is handled by the PIC, not the Arduino. I wonder if a way of managing this is to take a reading of current level when power button is pressed, toggle the GPIO line to let the RPi know that shutdown is imminent, and then m...
by Kevin
Thu Feb 22, 2018 1:48 am
Forum: Spirit Technical Discussion
Topic: volts.py output problem
Replies: 49
Views: 3819

Re: volts.py output problem

Can you post an example of the exact command you entered? Been a long time since I used grep, this will save me 45 minutes of digging on google. :) I'll do the same for smbus. One other quick note - regarding the virtuanenv - when you install the virtualenv it's important to use the extra tag on tha...
by Kevin
Wed Feb 21, 2018 2:39 am
Forum: Spirit Technical Discussion
Topic: volts.py output problem
Replies: 49
Views: 3819

Re: volts.py output problem

What commands should I run in terminal to check versions? Actually it may be a good idea for me to check versions of all kinds of stuff. If you can maybe make a list of commands, I can run and post the results. I'm thinking anything relevant - the Pi firmware, Linux version, etc. Also the SMBUS pack...
by Kevin
Tue Feb 20, 2018 6:42 pm
Forum: Spirit Technical Discussion
Topic: volts.py output problem
Replies: 49
Views: 3819

Re: volts.py output problem

Okay thanks for the feedback. Let's try something else.... We have a few pauses we can play with. We already tried setting the "i2c_process_delay(15)" in the main script and found it had no effect. This sets a response delay within the PIC itself. There are two other delays that are insert...
by Kevin
Sun Feb 18, 2018 6:35 pm
Forum: Spirit Technical Discussion
Topic: volts.py output problem
Replies: 49
Views: 3819

Re: volts.py output problem

This is helpful. I can't dig into it right away but it's a start. Let's try this now..... Load up a sketch on the Arduino, and have it run the function PIC_ReadPower() in a loop with a delay of maybe 2 seconds between calls. Have that sketch print powerVoltage variable to the serial monitor on the l...
by Kevin
Fri Feb 16, 2018 4:42 pm
Forum: Spirit Technical Discussion
Topic: SOLVED: Navigation (gyro and accelerometer) not working?
Replies: 4
Views: 700

Re: SOLVED: Navigation (gyro and accelerometer) not working?

Thanks for posting that gp. I appreciate your help on this! :)
by Kevin
Fri Feb 16, 2018 4:41 pm
Forum: Spirit Technical Discussion
Topic: Battery Charge LED ?
Replies: 3
Views: 469

Re: Battery Charge LED ?

Is it doing this while the robot is turned off? So power off plus a few hours charge time and the LED is still turned on?