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by PhatFil
Tue Sep 10, 2019 10:21 pm
Forum: Troubleshooting
Topic: Headless RPz(W) weird happenings.
Replies: 4
Views: 220

Re: Headless RPz(W) weird happenings.

Similar 'dead' headless pi-0 devices on my network had me running in circles for a while.. var/log/syslog etc wasnt enlightening, and provided no clues to a problem. Eventually i tried to reboot the router/AP instead of the PI, and on its return to service the Pi was available without any interventi...
by PhatFil
Tue Sep 10, 2019 2:55 am
Forum: Troubleshooting
Topic: Non-NOOBS factory reset (without reformat on seperate pc)
Replies: 1
Views: 102

Re: Non-NOOBS factory reset (without reformat on seperate pc)

YOU dont Need NOOBS to install raspbian onto your Pi but you cant overwrite the system sd card in a pi while its in use either.

You will need a usb/SD card reader And with one you could on a working pi with a network connection download and flash a raspbian image to a new/2nd SD card.
by PhatFil
Tue Sep 10, 2019 2:25 am
Forum: Automation, sensing and robotics
Topic: Sensor Accuracy - BMP180
Replies: 3
Views: 263

Re: Sensor Accuracy - BMP180

You cant expect any temp sensor to be really accurate out of the box without some calibration. For that you pay a premium for a certified and tested device.. a 2 point calibration is good enough to validate most sensors and close to 0C and close to 100C are temperatures you can easily approximate wi...
by PhatFil
Tue Sep 10, 2019 1:49 am
Forum: Beginners
Topic: Need some help using a compatible webcam running Raspbian on Rpi 4
Replies: 3
Views: 139

Re: Need some help using a compatible webcam running Raspbian on Rpi 4

Good Luck.. especially with the hand eye coordination with a large offset view.. Its a knack some find easier than others..
by PhatFil
Mon Sep 09, 2019 10:16 pm
Forum: Off topic discussion
Topic: Ouch
Replies: 17
Views: 2775

Re: Ouch

Tibbets has had 20 to 30 implants, almost all of them self-insertions.
nudge nudge wink wink..

so now we can have Internal Area Networks too ;)
by PhatFil
Mon Sep 09, 2019 9:28 pm
Forum: Automation, sensing and robotics
Topic: Mechanical clock hands, position set by pi or controller?
Replies: 5
Views: 465

Re: Mechanical clock hands, position set by pi or controller?

I'm sure such a thing exists, but I've not been able to find clock hands that can be positioned by pi or microcontroller. I've seen plenty of analogue "radio controlled" clocks that set the clock hands based on time from the MSF signal...but have no idea how to find a set of clock hands I can contr...
by PhatFil
Mon Sep 09, 2019 3:47 pm
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 1483

Re: Arduino IDE on Raspberry Pi Zero W

I find vnc fine when needed to access my headless pi-0-w systems and a gui interface. the arduino ide should work fine via vnc, its not as if many folk speed type when coding, (tv hackers excluded of course..) its either cut n paste or ponderous typing usually ;) But if you do type at speed typist r...
by PhatFil
Mon Sep 09, 2019 12:46 pm
Forum: Automation, sensing and robotics
Topic: safe protocol for cheap 433MHz transceiver
Replies: 8
Views: 561

Re: safe protocol for cheap 433MHz transceiver

I have an old project (long overdue for an update) using similar 433 mhz rx and tx modules. with a 12v power supply to the tx module and antenna attached to both the RX and TX modules i can recieve data sent via the offset fine protocol on a 5v arduino datalogger 25m distant from the brewshed. (fine...
by PhatFil
Fri Sep 06, 2019 1:40 am
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 735

Re: Angled case

if in the UK? these 2 organisations may be able to help you get access to equipment like 3d printers https://menssheds.org.uk/ https://www.hackspace.org.uk/ Elsewhere there may be similar organisations? there is even a commercial business services office down the rd from here with 3d sla printers in...
by PhatFil
Wed Sep 04, 2019 4:09 pm
Forum: Beginners
Topic: Connecting existing Doorbell (AC door bell with bell switch ) to raspberry pi 3 GPIO
Replies: 16
Views: 509

Re: Connecting existing Doorbell (AC door bell with bell switch ) to raspberry pi 3 GPIO

What sort of bell is being rung by the doorbell?? IF its a mechanical bell and hammer you may be able to wire a passive circuit using a magnet superglued to the bell hammer with a reed switch or similar to detect the magnets movement and ringing of the bell.. same result but no need ti get involved ...
by PhatFil
Tue Sep 03, 2019 11:56 am
Forum: Beginners
Topic: I'm so annoyed right now, can't get my share to show up
Replies: 2
Views: 141

Re: Im so annoyed right now, cant get my share to show up

Are you trying to share the root of the disk? If so try creating a directory in the disk root to share. if successful then move the disks contents down one level into the new directory. when setting up my pi/samba nas i found i had problems when trying to access the root of shared disks, but sharing...
by PhatFil
Sat Aug 31, 2019 2:36 pm
Forum: Advanced users
Topic: Raspberry Pi customized SD card management
Replies: 6
Views: 414

Re: Raspberry Pi customized SD card management

asuming you dont use a gui at all for setup after setting up a pi just dump the cli history to a file and you have a roadmap for the next identical set up or restore.
by PhatFil
Fri Aug 30, 2019 11:12 pm
Forum: Troubleshooting
Topic: How can I make blink1-tool connect to ifttt for a notification system?
Replies: 8
Views: 315

Re: How can I make blink1-tool connect to ifttt for a notification system?

i agree a casual glance over the docs i found for the command line tool dont talk about the same event/recipe config?
perhaps more expert advice can be found in more specific forums/lists?
https://blink1.thingm.com/help/
by PhatFil
Fri Aug 30, 2019 3:13 pm
Forum: Troubleshooting
Topic: How can I make blink1-tool connect to ifttt for a notification system?
Replies: 8
Views: 315

Re: How can I make blink1-tool connect to ifttt for a notification system?

Not exactly simple is it? perhaps a diy solution based on hosting a mqtt broker and a $2 esp8266 with a rgb or neopixel led attached would be easier to build from scratch. 8.1. IFTTT The IFTTT event source is the simplest and only has two fields: Rule Name and Pattern. (If you have multiple blink(1)...
by PhatFil
Fri Aug 30, 2019 1:20 am
Forum: Troubleshooting
Topic: How can I make blink1-tool connect to ifttt for a notification system?
Replies: 8
Views: 315

Re: How can I make blink1-tool connect to ifttt for a notification system?

sorry thought you were asking for where to get and install the tool which is in the above link along with links to using the gui and cli versions of the tool. To use an IFTTT event or service you need a ifttt a/c and then when you select an event or service follow the online instructions to link you...
by PhatFil
Thu Aug 29, 2019 11:46 pm
Forum: Other projects
Topic: Pushbutton multiple inputs
Replies: 12
Views: 669

Re: Pushbutton multiple inputs

Will that wiring cause interrupts to be triggered? Do you advise 5V+divider+SW pull down or GND+SW Pull Up? OR JUST USE THE +3.3v pin as the +v source like everyone else.. Only when using more sophisticated modules that provide a 5v signal should you need to supply 5v and use a voltage divider or l...
by PhatFil
Tue Aug 27, 2019 3:58 pm
Forum: Networking and servers
Topic: MQTT without internet
Replies: 18
Views: 1495

Re: MQTT without internet

you can only read new data to which you subscribe as and when its published. Mqtt brokers can be configured to retain payloads but that will just provide the last data published. You could publish on demand by responding to a Request mqtt publication but thats counter intuitive to how the protocol i...
by PhatFil
Tue Aug 27, 2019 3:35 pm
Forum: Troubleshooting
Topic: Raspberry Pi Zero W - Wifi issues
Replies: 4
Views: 394

Re: Raspberry Pi Zero W - Wifi issues

Unless you NEED buster for something? Perhaps look at using Stretch for now as thats tried and tested, Give it a few weeks till the usual distro upgrade path is tested and recommended before shifting to Buster, Buster is only NECESSARY if running on a Pi4.. With regular Pi4 centric fixes going on at...
by PhatFil
Tue Aug 27, 2019 3:17 pm
Forum: Python
Topic: Bluetooth RSSI
Replies: 6
Views: 897

Re: Bluetooth RSSI

its on my todo list, but i found existing projects to simply copy to access the sensors i use.. But i have the following bookmarked for later digestion..
http://www.raspberry-pi-geek.com/Archiv ... (offset)/1

Hope its a useful starting point.
by PhatFil
Tue Aug 27, 2019 2:55 pm
Forum: Beginners
Topic: Code for multiple ultrasonic sensors ROS related
Replies: 2
Views: 168

Re: Code for multiple ultrasonic sensors ROS related

Hi, I have 7 ultrasound sensors (hc-sr04) on my robot wired on the raspberry pi. I wanted to write a node that would first trigger only 4 of them and publish each on its own topic. Only the code down here gives me negative travel time and so on negative distance. Can you tell me what mistakes I've ...
by PhatFil
Mon Aug 26, 2019 12:28 am
Forum: Beginners
Topic: Simutaniously Runing HA-Bridge and HomeGenie
Replies: 4
Views: 224

Re: Simutaniously Runing HA-Bridge and HomeGenie

an alternative solution to controlling x10 433mhz rf devices is to flash a £10 sonoff rf bridge with tasmota firmware, and then install further firmware upgrades and sniff the relevant codes... (its a convoluted but documented procedure) https://github.com/arendst/Sonoff-Tasmota/wiki/Sonoff-RF-Bridg...
by PhatFil
Mon Aug 26, 2019 12:01 am
Forum: Wanted
Topic: I'll pay to create a raspberry pie os!
Replies: 18
Views: 3504

Re: I'll pay to create a raspberry pie os!

buy a copy of "Modern Operating systems" by AS Tanembaum. 20+ years ago it was the goto text book for O/S 101 classes. The source code for what became linux (minix) is in the appendix Minix = linux minus networking, tho there is a bit more to it ;) Job done for the cost of a 2nd use £5 text https://...

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