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by DaedalusOS
Wed Nov 13, 2019 9:12 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

All, As an update on this, I'm still in the proof of concept stage and it looks somewhat promising, however I'm running into some roadblocks... The RSSI is proving to be a bit of a challenge to work with, for a big reason: Inconsistency. The RSSI is constantly changing, even if I set the Pi and the ...
by DaedalusOS
Tue Nov 12, 2019 9:43 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

Everyone, Alright, just as an update for this: This beacon just showed up in the mail a little bit ago: https://www.amazon.com/gp/product/B07FC5FMHW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I've gone ahead and installed bluepy onto the Pi and have the following code running: from bluepy.btle...
by DaedalusOS
Tue Nov 12, 2019 3:18 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

Everyone, Just as an update to this, I'm expecting to receive a BLE iBeacon in the mail from Amazon today and I'm going to toy around with that and see if I have any luck with it. If I see that it does actually become viable, then I'll update you guys here with everything and I'll make sure to updat...
by DaedalusOS
Mon Nov 11, 2019 3:41 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

Searching for "long range uhf rfid reader raspberry pi" gives a few results worth checking out. Nothing specific that might suit this application? There are things like this: https://www.amazon.co.uk/reader-vehicle-parking-application-meters/dp/B018EFLJJI which claim 3 to 5 metres reading range but...
by DaedalusOS
Fri Nov 08, 2019 2:13 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

I think I'm gonna go ahead and order a Pi Zero and see what I can do, and take a look at all of your suggestions. In the event that I do choose to go with RFID, which type should I go with? I'd like it to be able to be detected from maybe a couple feet away, or maybe even just a foot away. Thanks ev...
by DaedalusOS
Thu Nov 07, 2019 7:50 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

Alright, after reading all of your responses I feel my exact goal may be a little more complex than what I wish to put into this right now, so I'm going to think about alternative methods to achieve something similar. How about RFID? My only issue here is that after looking some of this up, I'm worr...
by DaedalusOS
Tue Nov 05, 2019 7:08 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Re: Wireless Distance Sensing?

It sounds like you need battery power and small size. Maybe Pi ZeroW plus a USB power pack but maybe ESP32 or ATTiny which could run on a coin cell for a lot longer than the Pi. For sensing Bluetooth might be an easy option. You could read the RRSI signal strength of each Bluetooth or Wi-Fi device....
by DaedalusOS
Tue Nov 05, 2019 3:54 pm
Forum: Other projects
Topic: Wireless Distance Sensing?
Replies: 38
Views: 3098

Wireless Distance Sensing?

Greeting! I have a Pi 4 4GB, and I've got an idea for a project, however unfortunately I'm really having a hard time figuring out just what to properly use to accomplish my goal. What I want to do is basically setup a scavenger hunt using my Pi. I want to have small little devices (or anything at th...
by DaedalusOS
Sat Nov 02, 2019 3:29 pm
Forum: Official Foundation Display
Topic: Display Resolution Issue
Replies: 3
Views: 663

Re: Display Resolution Issue

Weird. What version of Pi, what version of OS and are you using FKMS or legacy graphics? Thanks for the hint above with this post, I went through /boot/config.txt and I found the following line: dtoverlay=vc4-fkms-v3d Once I put a "#" before that and rebooted, everything is now literally fine. The ...
by DaedalusOS
Fri Nov 01, 2019 9:28 pm
Forum: Official Foundation Display
Topic: Display Resolution Issue
Replies: 3
Views: 663

Re: Display Resolution Issue

Weird. What version of Pi, what version of OS and are you using FKMS or legacy graphics? cat /etc/os-release PRETTY_NAME="Raspbian GNU/Linux 10 (buster)" NAME="Raspbian GNU/Linux" VERSION_ID="10" VERSION="10 (buster)" VERSION_CODENAME=buster ID=raspbian ID_LIKE=debian HOME_URL="http://www.raspbian....
by DaedalusOS
Fri Nov 01, 2019 9:06 pm
Forum: Official Foundation Display
Topic: Display Resolution Issue
Replies: 3
Views: 663

Display Resolution Issue

Greetings! I've spent the past hour attempting to figure this out, to no avail... I've hooked up my Raspberry Pi 4 to the 7" Touchscreen Display, and unfortunately I'm running into an issue with the resolution being larger than the display itself. Output of tvservice -s: state 0x400000 [LCD], 800x48...
by DaedalusOS
Fri Aug 30, 2019 7:52 pm
Forum: Python
Topic: Help understanding 74HC595
Replies: 3
Views: 369

Re: Help understanding 74HC595

1.) Why exactly does 0x01 correspond to output 1, 0x02 correspond with output 2, etc? is the binary weight The 74HC595 is a shift register. When you clock the pin, bit 0 go to bit 1 and so on. bit 0 = 2 power 0 = 0x1 bit 1 = 2 power 1 = 0x2 .... bit 7 = 2 power 7 = 0x80 (128 in decimal) The binary ...
by DaedalusOS
Mon Aug 26, 2019 8:30 pm
Forum: Python
Topic: Help understanding 74HC595
Replies: 3
Views: 369

Help understanding 74HC595

Greetings! I hope this is the correct area to ask this, if not I apologize! I've been using the Raspberry Pi for a couple of weeks now and I'm getting the hang of it, however the bane of my existence has been my 74HC595 shift register. I understand the basics of how the Shift Register works, however...

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