Go to advanced search

by Crowbot
Sat Nov 30, 2019 2:57 pm
Forum: Other projects
Topic: Night Vision Scope
Replies: 1
Views: 150

Re: Night Vision Scope

Take a look at MotionEyesOS and PiKrellCam. Both are "security camera" systems and can monitor and snap videos and picture. Both also have motion capture features for un-attended recording.
by Crowbot
Wed Nov 20, 2019 4:10 pm
Forum: Beginners
Topic: Which screen to choose?
Replies: 6
Views: 185

Re: Which screen to choose?

I haven't used it but you could take a look at this. https://www.raspberrypi.org/products/ra ... h-display/ It uses the video connector on the Pi board so it doesn't use GPIO except for power.
by Crowbot
Sun Nov 17, 2019 11:26 pm
Forum: Troubleshooting
Topic: File Manager crashing
Replies: 2
Views: 3099

File Manager crashing

I have a Pi 4 running Buster.

I did an apt-get update/upgrade before installing PuTTY. After that, I am unable to run File Manager. It starts and I can see the window but then immediately closes. It was running fine before that. Where should I start?

TIA
by Crowbot
Wed Nov 13, 2019 3:04 am
Forum: Beginners
Topic: Simple weather station Raspberry Pi Sense Hat vs Waveshare Sense Hat (B)
Replies: 5
Views: 236

Re: Simple weather station Raspberry Pi Sense Hat vs Waveshare Sense Hat (B)

I separated mine with a GPIO riser and put a fan on the edge blowing on the BME and the CPU. It's spot on with my other thermometer. I have the Time, Temp and Humidity showing on the little LCD display. Now if I can find a case.
by Crowbot
Wed Nov 13, 2019 12:03 am
Forum: Beginners
Topic: Simple weather station Raspberry Pi Sense Hat vs Waveshare Sense Hat (B)
Replies: 5
Views: 236

Re: Simple weather station Raspberry Pi Sense Hat vs Waveshare Sense Hat (B)

You might want to take a look at this also: https://shop.pimoroni.com/products/enviro-plus

It has a BME280 which will do temp, pressure and humidity. It also has a light sensor and an analog in. I have one and it works very well.

Cheers.
by Crowbot
Tue Nov 12, 2019 11:55 pm
Forum: Beginners
Topic: solder HDMI cable directly to GPIO
Replies: 3
Views: 188

Re: solder HDMI cable directly to GPIO

You may want to just go with the smallest HDMI cable you can find. Search Amazon for flat HDMI. Some are pretty small.
by Crowbot
Mon Nov 11, 2019 4:14 pm
Forum: Automation, sensing and robotics
Topic: I am trying setup VNC server and Viewer to auto load
Replies: 1
Views: 590

Re: I am trying setup VNC server and Viewer to auto load

Are you running with a mouse connected. VNC will not start until it detects some mouse movement. Apparently it uses data from the mouse to generate a random number is uses for security. I snipped this from another post when I had the problem running a Pi Zero headless. "Then I found this post and sp...
by Crowbot
Thu Nov 07, 2019 3:56 pm
Forum: Beginners
Topic: Trying to get data of a sensor connected via Bluetooth
Replies: 9
Views: 229

Re: Trying to get data of a sensor connected via Bluetooth

From what I've read on their website, the data is only accessible using the company's API. The Bluetooth device connects to an internet connected device (phone, PC) and uploads (encrypted) to their server. Then you would use their API to access the data from their server. This is common in the healt...
by Crowbot
Thu Oct 24, 2019 12:50 pm
Forum: Automation, sensing and robotics
Topic: Vehicle speed radar monitor
Replies: 10
Views: 1021

Re: Vehicle speed radar monitor

How about an acceleration sensor like "https://shop.pimoroni.com/products/lsm3 ... r-breakout". It would need some calibration but should be able to show absolute forward speed.
by Crowbot
Sun Oct 20, 2019 11:21 am
Forum: Beginners
Topic: Pi Zero running multiple tasks - performance implications
Replies: 5
Views: 447

Re: Pi Zero running multiple tasks - performance implications

One of these may help.

https://www.amazon.com/s?k=USB+power+me ... _sb_noss_2

I use one to check the draw on my devices.
by Crowbot
Wed Oct 09, 2019 5:38 pm
Forum: Automation, sensing and robotics
Topic: Looking for a relatively low-cost electrical conductivity sensor that gives the signal in digital output
Replies: 5
Views: 506

Re: Looking for a relatively low-cost electrical conductivity sensor that gives the signal in digital output

I found this on Amazon. Look for "Arduino water sensor". I believe it has a digital output but would need to be calibrated to the specific fluid.
arduino water sensor.jpg
arduino water sensor.jpg (55.95 KiB) Viewed 421 times
by Crowbot
Wed Oct 09, 2019 5:15 pm
Forum: Automation, sensing and robotics
Topic: Control 12v solenoid valve using Raspberry Pi
Replies: 10
Views: 35120

Re: Control 12v solenoid valve using Raspberry Pi

Ah, didn't notice the original date.
by Crowbot
Wed Oct 09, 2019 12:30 pm
Forum: Automation, sensing and robotics
Topic: Control 12v solenoid valve using Raspberry Pi
Replies: 10
Views: 35120

Re: Control 12v solenoid valve using Raspberry Pi

You could also try this if you're not into soldering: https://www.amazon.com/Tolako-Arduino-Indicator-Channel-Official/dp/B00VRUAHLE/ref=pd_cp_23_4/146-9578993-7687853?_encoding=UTF8&pd_rd_i=B00VRUAHLE&pd_rd_r=2a3c0b88-d270-4c11-b98f-f2d1da4538ba&pd_rd_w=U4XTo&pd_rd_wg=j8z2u&pf_rd_p=ef4dc990-a9ca-49...
by Crowbot
Fri Oct 04, 2019 11:51 am
Forum: Beginners
Topic: enviro plus Help
Replies: 2
Views: 119

Re: enviro plus Help

I was pointed to EnviroPlusWeb-master in GitHub. I haven't used it yet but it is designed to gather and plot data from the EnviroPus and send it to a web server. Hope this helps.
by Crowbot
Thu Oct 03, 2019 4:57 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3B+ Unable to sync to correct time
Replies: 17
Views: 839

Re: Raspberry Pi 3B+ Unable to sync to correct time

Usually the Pi will sync up when it's online. Are you online? Also, I'd want to know why the Pi crashes so reliably.
by Crowbot
Thu Oct 03, 2019 2:04 am
Forum: AIY Projects
Topic: Object detection
Replies: 1
Views: 1333

Re: Object detection

I don't know if it's appropriate but look at the MOTION package. I believe it has functions for saving video. Good luck.
by Crowbot
Tue Oct 01, 2019 1:05 pm
Forum: Automation, sensing and robotics
Topic: automatic parking disc
Replies: 6
Views: 572

Re: automatic parking disc

I think the servo is the way to go as it will give the finest and controlled movement. You could mount it behind the card and cut out a space for the servo wheel to contact the disk in the card. Some rubber on the wheel for traction would help. You should be able to spin the wheel a set amount. I ha...
by Crowbot
Tue Oct 01, 2019 12:48 pm
Forum: Automation, sensing and robotics
Topic: Smart pillow to detect Sleep Apnea utilizing RaspberryPi
Replies: 20
Views: 1712

Re: Smart pillow to detect Sleep Apnea utilizing RaspberryPi

True, but you'd certainly want to detect them, eh? :)

I'm picking up my new glasses next week.
by Crowbot
Mon Sep 30, 2019 1:31 pm
Forum: Automation, sensing and robotics
Topic: Smart pillow to detect Sleep Apnea utilizing RaspberryPi
Replies: 20
Views: 1712

Re: Smart pillow to detect Sleep Apnea utilizing RaspberryPi

You could put some stain sensors into the pillow to detect movement. Something like this:

https://www.adafruit.com/product/182

Head movement could be fairly accurately measured and could be an indicator of apnea.

I was a Biomedical Equipment tech for years. Please contact if I can give advice.
by Crowbot
Sun Sep 29, 2019 10:48 pm
Forum: Automation, sensing and robotics
Topic: Help building motion sensing sms trail camera
Replies: 2
Views: 294

Re: Help building motion sensing sms trail camera

Take a look at this: https://github.com/ccrisan/motioneye/wiki
Motioneye is a front end for the Motion software. It has some sophisticated motion sensing features like masking (restrict motions sensing to a specific area) and is web accessible. I've been running it on a standalone Pi B for a while.
by Crowbot
Sun Jul 14, 2019 4:49 pm
Forum: Beginners
Topic: (Possibly pre-beginner!) Sensing simple closed circuit.
Replies: 8
Views: 354

Re: (Possibly pre-beginner!) Sensing simple closed circuit.

It's a shot in the dark but if you coiled a wire around the hot leg to the switch it would induce a small current in the wire, like those clamp-on ammeters. You might be able to work with that.
by Crowbot
Sat Jul 13, 2019 2:07 pm
Forum: Troubleshooting
Topic: No camera button in motionEye Web GUI accessed via internet
Replies: 2
Views: 117

Re: No camera button in motionEye Web GUI accessed via internet

Just a thought but if you are logging in as USER you won't get the extra buttons. Make sure you're logged in as ADMIN.

Go to advanced search