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by PhatFil
Wed Aug 07, 2019 12:48 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: current, voltage signal output raspberry pi
Replies: 4
Views: 143

Re: current, voltage signal output raspberry pi

Ok, probably do-able, but for help with circuit design and suggestions for which direction to take a few specific details would be necessary. what range of voltages do you want to supply, and what sort of current demands do you want to accommodate? DC? In most cases however your probably going to fi...
by PhatFil
Wed Aug 07, 2019 11:56 am
Forum: Troubleshooting
Topic: Trying to get RioRand 433MHz RF Link receiver to work on Pi3
Replies: 5
Views: 124

Re: Trying to get RioRand 433MHz RF Link receiver to work on Pi3

how are you attempting to detect the signals your expecting to capture? when using similar h/w with an arduino to hijack some fine offset protocol signals containing temperature and relay status metrics from a hacked stc1000 i used the libs developed by luc small to do the bit banging.. https://gith...
by PhatFil
Tue Aug 06, 2019 11:08 pm
Forum: General discussion
Topic: Data Acquisition Slow Down
Replies: 6
Views: 157

Re: Data Acquisition Slow Down

if your taking readings very frequently and desire to maintain a consistent data capture rate regardless of Pi workload. You could consider employing a small secondary dev board like an arduino to capture the data and transmit it in bundles of multiple readings to your pi for logging/display/analysi...
by PhatFil
Tue Aug 06, 2019 9:39 pm
Forum: Troubleshooting
Topic: The dreaded No Wireless interface issue - lots of head banging
Replies: 8
Views: 253

Re: The dreaded No Wireless interface issue - lots of head banging

As you chose that particular uid/handle..

Pi 1, 2,3, or 4?

not all have onboard wifi..
by PhatFil
Sun Aug 04, 2019 8:29 pm
Forum: General discussion
Topic: First dabble in RPi. Am I going in over my head?
Replies: 7
Views: 313

Re: First dabble in RPi. Am I going in over my head?

imho you probably put your finger on the problem with the arduino experiments and its coding being the lack of a project to drive you forward. And I think you will find that most folk here find the electronics side of things a bit more of a challenge than the coding. So if you hit a snag drop a Q in...
by PhatFil
Sat Aug 03, 2019 8:43 pm
Forum: Troubleshooting
Topic: Trying to get RioRand 433MHz RF Link receiver to work on Pi3
Replies: 5
Views: 124

Re: Trying to get RioRand 433MHz RF Link receiver to work on Pi3

not used that h/w but have used similar with an arduino.. looking at the amazon page it looks like the receiver expects 5v to drive it. so i would get hold of a 3.3v/5v logic level shifter, to accommodate 3.3v to 5v 2 way data coms and protect your pi gpio from the 5v signals and run the device off ...
by PhatFil
Fri Aug 02, 2019 2:25 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Collecting data periodically from multiple Bluetooth (BLE) devices
Replies: 4
Views: 303

Re: Collecting data periodically from multiple Bluetooth (BLE) devices

Watching with interest.. My own BLE sensors are queried sequentially but the Node red flows built early 2018 using a couple of user contributed nodes fail when installed on a freshly installed updated system!!
by PhatFil
Fri Aug 02, 2019 1:44 pm
Forum: General discussion
Topic: Suggestions for a cheap, wireless, and reliable Keyboard/Mouse?
Replies: 18
Views: 536

Re: Suggestions for a cheap, wireless, and reliable Keyboard/Mouse?

I got a set similar to but not from this seller https://www.aliexpress.com/item/33009122766.html?spm=a2g0o.productlist.0.0.404e24f0DAOIpJ&algo_pvid=6d7824bd-30bf-435a-93ae-23395fcb543a&algo_expid=6d7824bd-30bf-435a-93ae-23395fcb543a-1&btsid=db9eab7d-429a-4b57-8f48-c844e426e519&ws_ab_test=searchweb0_...
by PhatFil
Fri Aug 02, 2019 11:23 am
Forum: General discussion
Topic: how to merge apps
Replies: 5
Views: 234

Re: how to merge apps

davidcoton wrote:
Thu Aug 01, 2019 1:43 pm
PhatFil wrote:
Thu Aug 01, 2019 11:58 am
Bars have never been quite the same since the smoking ban ..
True. They are more accessible now. :roll:
and empty or closed..
by PhatFil
Thu Aug 01, 2019 11:58 am
Forum: General discussion
Topic: how to merge apps
Replies: 5
Views: 234

Re: how to merge apps

Bars have never been quite the same since the smoking ban ..
by PhatFil
Wed Jul 31, 2019 7:40 pm
Forum: Beginners
Topic: Remote control of networked Pi's
Replies: 5
Views: 162

Re: Remote control of networked Pi's

Check out node red as a tool to distribute and respond to mqtt publications on your pi es.. its got a nice drag n drop gui interface that lets you build your system logic into execution flows, it can take a bit of 'getting the hang of' but is well packaged with good learning resources on the nodered...
by PhatFil
Wed Jul 31, 2019 7:32 pm
Forum: Beginners
Topic: Need help mapping out multiple things to Raspberry Pi
Replies: 5
Views: 144

Re: Need help mapping out multiple things to Raspberry Pi

Just a thought or 2,, if using an ultrasonic mister it probably uses an AC psu powered by mains power. for such a device you may find it a lot easier to use an off the shelf smart wifi power socket to turn on/off as you can mod many of these to respond to wifi/mqtt commands issued directly from your...
by PhatFil
Wed Jul 31, 2019 7:13 pm
Forum: General discussion
Topic: how much is the 4b where you live?
Replies: 12
Views: 410

Re: how much is the 4b where you live?

£10 overpriced
$55 =(at time of posting) £45 Not £55..

:mrgreen:
by PhatFil
Wed Jul 31, 2019 6:59 pm
Forum: Beginners
Topic: 5V Solutions for Multiple Sensors w/o Breadboard
Replies: 4
Views: 110

Re: 5V Solutions for Multiple Sensors w/o Breadboard

As i find it easy to use dupont wires to connect up Pi/sbc dev boards to modular sensors and components i tend to make bus bars for 5v 3.3v and gnd inside my project boxes made from strips of male header pins with the bottoms all soldered together, wrapping the short legs with some stripped stranded...
by PhatFil
Wed Jul 31, 2019 6:15 pm
Forum: Français
Topic: led ikea
Replies: 8
Views: 275

Re: led ikea

bonjour, j'ai acheté ce produit chez ikea. https://www.ikea.com/be/fr/p/norrfly-baguette-lumineuse-led-couleur-aluminium-60332252/ J'aimerais le relier au raspberry. Je n'ai jamais encore joué avec les leds et les pin... Comment faire? est-ce faisable? quels pin utiliser? quelle systeme utiliser? M...
by PhatFil
Wed Jul 31, 2019 9:19 am
Forum: Beginners
Topic: Automatic wireless from PC to RPI file transfer
Replies: 1
Views: 77

Re: Automatic wireless from PC to RPI file transfer

the keyword for your searches is 'FTP' for File Transfer Protocol.
depends on if you want the pc or Pi to steer.
https://www.newth.net/mars/how-to-set-u ... r-via-ftp/
https://winscp.net/eng/docs/guide_automation
by PhatFil
Wed Jul 31, 2019 8:57 am
Forum: Python
Topic: How do i display incoming serial data on 20x4lcd?
Replies: 5
Views: 165

Re: How do i display incoming serial data on 20x4lcd?

Find a couple of basic example projects 1 using a 20x4 lcd display, and another that reads serial input. Python projects and examples would probably be the easiest to find and follow. Ypu may find something VERY close to what you want too ;) With 2 x example projects you can study and learn how the ...
by PhatFil
Wed Jul 31, 2019 8:42 am
Forum: General discussion
Topic: Servers Power Consumption
Replies: 4
Views: 207

Re: Servers Power Consumption

anything you install to run as a service will by definition will require some processing power to start and set up, what it does while not responding to requests may or may not require additional time/power to execute depending on just what it is. A home automation server will no doubt gather and re...
by PhatFil
Tue Jul 30, 2019 11:28 am
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 10
Views: 181

Re: Connecting Bluetooth to Arduino and HC-05

gordon77 wrote:
Tue Jul 30, 2019 11:10 am
Thanks I've tried this one, bluez not available?
then install it..
sudo apt-get install bluetooth bluez
entered at the cli should do it..
by PhatFil
Tue Jul 30, 2019 11:07 am
Forum: Troubleshooting
Topic: [solved] Connecting Pi bluetooth to Arduino and HC-05
Replies: 10
Views: 181

Re: Connecting Bluetooth to Arduino and HC-05

Bluetooth provides a couple of communication methods, probably the easiest to use is serial over bluetooth connection. This came up searching for the keywords 'arduino bluetooth serial pi' http://www.uugear.com/portfolio/bluetooth-communication-between-raspberry-pi-and-arduino/ check the arduino lib...
by PhatFil
Sat Jul 27, 2019 7:17 pm
Forum: General discussion
Topic: Pi4 Cooling
Replies: 118
Views: 8340

Re: Pi4 Cooling

And running it for 1h11m the highest temperature is 73'C. Highest temperature on the case is 47'C. 73'C sounds pretty close to 80C when i understand throttling will start. What happens after a few hours of watching hi-def video or browsing add and clickbait covered social media pages if its hitting...
by PhatFil
Fri Jul 26, 2019 10:52 pm
Forum: Beginners
Topic: Audio Reactive Led Strip
Replies: 2
Views: 68

Re: Audio Reactive Led Strip

the ground is the common negative terminal for all your gpio circuitry.

you ensure that you have a common ground reference when using power from different sources for your pi and any devices it controls by connecting all the grounds together .

When in doubt ask..
by PhatFil
Fri Jul 26, 2019 10:41 pm
Forum: Beginners
Topic: Remote control of networked Pi's
Replies: 5
Views: 162

Re: Remote control of networked Pi's

Look to use MQTT passing a simple message from the control Pi to the remote ones. When the remote Pi get a play command, run the light show. http://www.steves-internet-guide.com/ has lots of details on MQTT I was just about to say the same, you can write scripts to publish and subscribe to the rele...
by PhatFil
Fri Jul 26, 2019 5:58 pm
Forum: General discussion
Topic: Pi4 Cooling
Replies: 118
Views: 8340

Re: Pi4 Cooling

I just received a flirc case. Ran the same test as the guy from Explainingcomputers : Ambient Temperature: 27.0'C temp=41.0'C temp=50.0'C temp=52.0'C temp=54.0'C temp=54.0'C temp=56.0'C temp=57.0'C temp=59.0'C The hottest spot on the case that I could find was 41'C. So this case not only looks beau...

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