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by ElEscalador
Fri Mar 01, 2019 10:37 pm
Forum: Automation, sensing and robotics
Topic: How to use accelerometer to monitor rotating machine health
Replies: 2
Views: 136

Re: How to use accelerometer to monitor rotating machine health

What are you looking to find? Changes in velocity? Wobble from perhaps bad bearings? Not sure what you need, but it sounds like you have more problems with the physics than the device usage? The units you read are in milliG's (from the couple that I've used), sometimes configurable to output meters ...
by ElEscalador
Fri Mar 01, 2019 10:30 pm
Forum: Beginners
Topic: Question about writing code on/for the Pi
Replies: 15
Views: 347

Re: Question about writing code on/for the Pi

I personally find it easiest to vnc into my pi and develop directly on it that way, but once in a while I'll work on my laptop and send the files over - in the past I've used dropbox, more and more I use gitlab.
by ElEscalador
Thu Feb 28, 2019 3:36 pm
Forum: General discussion
Topic: PiCam V1.3 works but not V2 with Octopi?
Replies: 1
Views: 88

Re: PiCam V1.3 works but not V2 with Octopi?

Baffled... I can't get this v2 camera to fail on any other pi I have - (zero, 2b, 3B) with variously-aged distros, but still no go on the octopi...which should just be a raspbian distro with the octo-stuff preloaded. Although.... ...The octo is on the only 3B+ I own (accidental purchase - speed bump...
by ElEscalador
Thu Feb 28, 2019 3:31 pm
Forum: General discussion
Topic: Any chance of the SD Copier util working on ubuntuMatePi?
Replies: 3
Views: 118

Re: Any chance of the SD Copier util working on ubuntuMatePi?

Anyone know if the copier util is actually a program called piclone? That's all I can find on github.
by ElEscalador
Thu Feb 28, 2019 1:49 am
Forum: General discussion
Topic: Any chance of the SD Copier util working on ubuntuMatePi?
Replies: 3
Views: 118

Any chance of the SD Copier util working on ubuntuMatePi?

Have a Pi running UbunutMate for ROS purposes and am a big fan of the GUI sd copier tool on Raspbian. Any chance of it working on Ubuntu Mate? And how might one go about installing it?
by ElEscalador
Thu Feb 28, 2019 1:44 am
Forum: General discussion
Topic: PiCam V1.3 works but not V2 with Octopi?
Replies: 1
Views: 88

PiCam V1.3 works but not V2 with Octopi?

New to Octopi - and it's working fine with a v1.3 camera on a new 3B+ but I tried to swap a V2 with a fisheye lens in place of the 1.3, but it refuses to stream or light up or anything. Checked my cables...even went back and forth a couple times and v1.3 just works and v2 does not. Verified the V2 a...
by ElEscalador
Mon Feb 25, 2019 4:54 pm
Forum: Troubleshooting
Topic: LIDAR and rasp
Replies: 2
Views: 57

Re: LIDAR and rasp

Yes, I have but also yes - we need more information to be helpful. We need type of lidar (model and manufacturer), what language are you using? Are you getting any data at all or is the device just not connecting? How is your device powered and connected?
by ElEscalador
Fri Feb 22, 2019 1:38 pm
Forum: Automation, sensing and robotics
Topic: Ultrasound sensor alternatives?
Replies: 11
Views: 847

Re: Ultrasound sensor alternatives?

VL5xxx all the way, buuut - I ordered a couple and was disappointed that the manufacturer wanted me to install 25+pages worth of api instead of providing a normal register map like every I2C device in the world. Went with a 360 degree lidar instead and haven't gotten around to messing with it, but I...
by ElEscalador
Tue Feb 12, 2019 1:09 pm
Forum: General discussion
Topic: Pi to Pi python communication
Replies: 10
Views: 296

Re: Pi to Pi python communication

Nice, saving that.
by ElEscalador
Tue Feb 12, 2019 12:36 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Using both UARTs to monitor/inject data
Replies: 2
Views: 129

Re: Using both UARTs to monitor/inject data

If I understand what you want to accomplish, you may not need two uarts - to me it sound like you can use just the rx pin to listen to the keyboard, and just the tx pin for sending to the Atari. Unless you need to read AND write to these devices, in which case... You could try bit-banging with pigpi...
by ElEscalador
Sat Feb 09, 2019 1:41 pm
Forum: General discussion
Topic: Pi to Pi python communication
Replies: 10
Views: 296

Re: Pi to Pi python communication

1. Allegedly MQTT..it's cool and probably easier with python - I had some hiccups with C++ but it's great once it works. 2. Little uart tx/rx wireless transceiver chips of all sorts out there pretty cheap now. Then you can just use uart comms like the PIs were just wired together. More parts, but so...
by ElEscalador
Wed Feb 06, 2019 12:29 pm
Forum: Troubleshooting
Topic: RPi GPIO Activates on Hard Shutdown/Power On
Replies: 8
Views: 247

Re: RPi GPIO Activates on Hard Shutdown/Power On

I use a pi for my garage and had a...simliarish problem. Not so much holding, but upon booting the relay for the garage door would chatter as the pi booted and gpio pins toggled, causing the door to open with every power hiccup. The quickest solution (and it's worked for years now and I've implement...
by ElEscalador
Wed Feb 06, 2019 12:17 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Re: Host name change on Pi with Ubuntu Mate, now cannot SSH

Ahhh...after that bout of epic ignorance, I am now able to get in with the proper IP address. For some reason, I can get into my two other linux machines at home (old netbook and my garagePi) by host name, but this one requires the ip address. Now if I could just get realvnc into cloud service mode...
by ElEscalador
Tue Feb 05, 2019 9:02 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Re: Host name change on Pi with Ubuntu Mate, now cannot SSH

Ohhhhh... Complete lack of understanding of IP addresses and such on my part - I thought local meant within my network. That makes more sense. Appreciate the handholding.
by ElEscalador
Tue Feb 05, 2019 8:44 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Re: Host name change on Pi with Ubuntu Mate, now cannot SSH

I see...but I don't see. That is - I don't know what part of the ssh -v indicates it's connecting to itself.
by ElEscalador
Tue Feb 05, 2019 8:02 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Re: Host name change on Pi with Ubuntu Mate, now cannot SSH

Update: I vnc's back into my garage pi and with ifconfig, it does seem that Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:33286 errors:0 dropped:0 overruns:0 frame:0 TX packets:33286 errors:0 dropped:0 ov...
by ElEscalador
Tue Feb 05, 2019 7:55 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Re: Host name change on Pi with Ubuntu Mate, now cannot SSH

That's crazy... I'll have to dig into the router and see what it thinks is happening. Interesting thought about the password...keyboards... I may burn a fresh image and start over too, but I'd really like to understand everything too. Drawing? Oh..like the machines on the network and their internal ...
by ElEscalador
Tue Feb 05, 2019 6:42 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Re: Host name change on Pi with Ubuntu Mate, now cannot SSH

Something new while trynig to get you that output (Possibly becuase I vnc'd into another pi at home and used that from work to try and SSH into my ROS Pi?) I now got as far as a password screen. I am confident I am typing the correct password, but still getting permission denied. Something about a p...
by ElEscalador
Tue Feb 05, 2019 1:27 pm
Forum: General discussion
Topic: Host name change on Pi with Ubuntu Mate, now cannot SSH
Replies: 14
Views: 343

Host name change on Pi with Ubuntu Mate, now cannot SSH

I know this isn't the distro we usually talk about here, but I've only used raspian before with all of it's nifty beginner tools and I'm having a hard time getting on this other help forum- I was wondering if there is some typical setting in linux that changes with host name or wifi config that woul...
by ElEscalador
Mon Jan 28, 2019 12:44 pm
Forum: Advanced users
Topic: Reading unsigned serial data direct through USB
Replies: 2
Views: 154

Re: Reading unsigned serial data direct through USB

Hmmm.. Maybe someone knows better (and I'm half commenting so I can follow along), but you may need an FTDI taking that "USB" data and giving you a regular UART serial stream you can wire to the gpio.. It's really pretty easy - not as easy and usb->usb, obviously.
by ElEscalador
Tue Jan 22, 2019 3:06 pm
Forum: General discussion
Topic: One Wire Device (DS18B20 temperature sensor) Detect and Config Tool
Replies: 0
Views: 77

One Wire Device (DS18B20 temperature sensor) Detect and Config Tool

Here's a little utility to make using DS18B20 temp sensors a bit easier to set up. May(should?) work with other one-wire devices, but I don't have any to test with. Detects and lets you name devices and saves a list of up to 20 to a file in /etc. You can change file and max easily... then any other ...
by ElEscalador
Tue Jan 22, 2019 2:55 pm
Forum: General discussion
Topic: DS18B20 One Wire sensors slow to show up/go away from directory?
Replies: 8
Views: 252

Re: DS18B20 One Wire sensors slow to show up/go away from directory?

Yes, the directory updating slowly was the problem...although at times it seemed to take a bit over a minute to update (that was with a zeroW) Thanks again.
by ElEscalador
Tue Jan 22, 2019 12:50 pm
Forum: Automation, sensing and robotics
Topic: Robot Questions
Replies: 8
Views: 482

Re: Robot Questions

I think you'll have trouble trying to turn 90 degrees..the robot will frequently be completely off the line and lost. try a more subtle change. 5 line sensors would help - then you could get a little better idea of how much turning is needed. I've never done a line follower, but honestly I think I'd...
by ElEscalador
Mon Jan 21, 2019 12:37 am
Forum: Beginners
Topic: Detect electrical current of external device
Replies: 13
Views: 522

Re: Detect electrical current of external device

I would definitely skip the extra steps trying to catch the momentary current and just catch the voltage increase at the doorbell. If you're in the US, I *think* doorbells typically used to be 16 (or 18 was it 18?) volts but 24 is becoming a thing. The easy thing to do would be to figure out that v...
by ElEscalador
Sun Jan 20, 2019 7:19 pm
Forum: Beginners
Topic: Detect electrical current of external device
Replies: 13
Views: 522

Re: Detect electrical current of external device

I would definitely skip the extra steps trying to catch the momentary current and just catch the voltage increase at the doorbell. If you're in the US, I *think* doorbells typically used to be 16 (or 18 was it 18?) volts but 24 is becoming a thing. The easy thing to do would be to figure out that vo...

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