Go to advanced search

by Andyroo
Tue Aug 13, 2019 3:30 pm
Forum: General discussion
Topic: Connecting Pi 4 to Verizon Data
Replies: 6
Views: 266

Re: Connecting Pi 4 to Verizon Data

Maybe one of these https://www.pianywhere.com/ ? I wouldn't. PiAnywhere aka IoT Bit is from Divi aka Altitude Technology who are a dead company. Another sketchy crowdfunding disaster. You can still get their overpriced HATs from Mouser but don't expect any support for it or the libraries they suppl...
by Andyroo
Tue Aug 13, 2019 3:28 pm
Forum: Python
Topic: Get devices connected to rpi wifi hotspot
Replies: 6
Views: 301

Re: Get devices connected to rpi wifi hotspot

What software are you using to create the hotspot?

What O/S do you have on the Pi?

Does the hotspot have its own sub-net or does it share the Ethernet connection via a DHCP range?
by Andyroo
Tue Aug 13, 2019 1:34 am
Forum: General discussion
Topic: Connecting Pi 4 to Verizon Data
Replies: 6
Views: 266

Re: Connecting Pi 4 to Verizon Data

Maybe one of these https://www.pianywhere.com/?
by Andyroo
Mon Aug 12, 2019 11:02 pm
Forum: Automation, sensing and robotics
Topic: Controlling a 7 segment 4 digit display with a Raspberry Pi
Replies: 4
Views: 207

Re: Controlling a 7 segment 4 digit display with a Raspberry Pi

Welcome to the forum.

Do you have any details on the module?

A quick google shows me single digit, two digit, four digit, direct control and SPI control all on the first page :lol:
by Andyroo
Mon Aug 12, 2019 10:53 pm
Forum: Beginners
Topic: Python first program
Replies: 10
Views: 250

Re: Python first program

Tried again...how do I get to directory with the file I have saved ? You use cd directory In Linux everything is case sensitive so /Home is different to /home This gives you some more basic details https://www.lifewire.com/uses-of-command-cd-2201063 You may find this of interest - it’s close to the...
by Andyroo
Mon Aug 12, 2019 10:37 pm
Forum: Python
Topic: Phython Reading Temperature every 10 Secs and writing to DB
Replies: 2
Views: 159

Re: Phython Reading Temperature every 10 Secs and writing to DB

I would change the program so it reads the data once only then write the data to the database.

You can then use cron to call this program every 30 minutes.
by Andyroo
Mon Aug 12, 2019 8:46 pm
Forum: Troubleshooting
Topic: Unable to install Raspbian on RPi4
Replies: 3
Views: 187

Re: Little problem

Look at using Raspbian direct from https://www.raspberrypi.org/downloads/raspbian/

I recommend Etcher to write the SD card https://www.balena.io/etcher/

This cannot be used for NOOBS though.
by Andyroo
Mon Aug 12, 2019 8:43 pm
Forum: Beginners
Topic: Python first program
Replies: 10
Views: 250

Re: Python first program

It’s ell ess not one ess

You may find that using Thonny is a better starting point as it forces you to save before running the program and gives hints and tips :)

If you are using nano the ctrl-x followed by Y will save and exit.
by Andyroo
Mon Aug 12, 2019 7:49 pm
Forum: Other projects
Topic: Creating an heart attack detector
Replies: 14
Views: 509

Re: Creating an heart attack detector

Not wanting to derail the discussion but this article maybe of interest even just to prove it is possible in some cases just to use the beat rate https://techlector.com/apple-watch-detects-heart-attack/ Maybe start with green led heartbeat sensors (search photoplethysmography) and go from there - a ...
by Andyroo
Mon Aug 12, 2019 7:36 pm
Forum: General discussion
Topic: Raspi pressure sensor
Replies: 14
Views: 391

Re: Raspi pressure sensor

There are two types of pressure sensors. The first is to take the air pressure (one is in the breakout garden here ) The second is to record the pressure you apply (like a bathroom scale) such as this old article . The common thing about all of these devices (and the majority of Pi bits) is that you...
by Andyroo
Mon Aug 12, 2019 7:03 pm
Forum: Beginners
Topic: 2 years in the cupboard...
Replies: 3
Views: 219

Re: 2 years in the cupboard...

Welcome to the forum. My first guess is it’s an IP problem on the Pi. If you had set a fixed IP address on the Pi it could be different from the internal network address of the new router. e.g. At the last house you may have had 192.168.1.x as the network but the new house could have 192.168.0.x If ...
by Andyroo
Mon Aug 12, 2019 6:54 pm
Forum: General discussion
Topic: Still confused, what is better for my SD card?
Replies: 9
Views: 439

Re: Still confused, what is better for my SD card?

Cards have some hidden space for wear levelling - I’m running 16Gb on Pi with HDD for machines needing more than around 12Gb If you are that bothered get a HDD or SSD on USB and boot from that or via hybrid (SD and HDD) boot. I’ve used SD cards for years in cameras and never had them fail from over ...
by Andyroo
Mon Aug 12, 2019 6:14 pm
Forum: Beginners
Topic: How to control multiples output
Replies: 9
Views: 219

Re: How to control multiples output

Look at the MCP23017 chip. These allow you to control 16 lines and can be connected to the Pi

Some HATs are available - just search locally for the chip and HAT and some will turn up. For example this one can be stacked to give you 128 ports.
by Andyroo
Sun Aug 11, 2019 8:33 pm
Forum: Beginners
Topic: Is it possible to power off a monitor when the RPi is powered off?
Replies: 13
Views: 322

Re: Is it possible to power off a monitor when the RPi is powered off?

Simplest way is to use a remote control power socket like the Sonoff range or Evergreen kit.

If using the first, update the software to Tasmota and you are set to go.


One other thought is to look at the CEC instructions and put the TV into standby.
by Andyroo
Sun Aug 11, 2019 6:37 pm
Forum: Troubleshooting
Topic: Is my pi 3B throtteling due to undervoltage? [solved]
Replies: 9
Views: 298

Re: Is my pi 3B throtteling due to undervoltage?

Have you tried a power supply or a charger?

The Pi supply provides 5.1v via nice thick cables where chargers can drop down to 4.3v or so normally through thin cable.
by Andyroo
Sun Aug 11, 2019 6:16 pm
Forum: Troubleshooting
Topic: RPi 2 has better connectivity than RPi4?
Replies: 15
Views: 558

Re: RPi 2 has better connectivity than RPi4?

Possible power issues?
Possibly race / lock issue with the overclocking?
by Andyroo
Sun Aug 11, 2019 3:32 pm
Forum: Automation, sensing and robotics
Topic: Anyone built successfully RF receiver and transmitter on pi3
Replies: 3
Views: 206

Re: Anyone built successfully RF receiver and transmitter on pi3

Normally a 433Mhz antenna is a coil of wire about 17cm long (cannot remember the exact length). Look for a YouTube Gent with the Swiss accent by the name of Andreas Spiess ( his channel ) He has a few software defined radios (e.g. garage doors that may help. Also if you still have a remote - can you...
by Andyroo
Sun Aug 11, 2019 1:08 pm
Forum: General discussion
Topic: 'Sniffing' Serial Commands?
Replies: 25
Views: 719

Re: 'Sniffing' Serial Commands?

If you know the speed and format (bits / parity) and the data is one way, you could just connect the Pi (via level converter if needed) and use the Pyserial module to read the data character by character and just dump the hex data to the screen.
by Andyroo
Sun Aug 11, 2019 12:17 pm
Forum: Troubleshooting
Topic: External USB3 drive slows down during transfer
Replies: 11
Views: 249

Re: External USB3 drive slows down during transfer

:lol:

You should see the state of some of my cables :oops: I have a purge every now and then and learnt to use a pair of scissors or wire cutters to stop me fishing them out of the bin as 'well its OK if bent hard to the left'...
by Andyroo
Sun Aug 11, 2019 12:11 pm
Forum: General discussion
Topic: Raspi pressure sensor
Replies: 14
Views: 391

Re: Raspi pressure sensor

Welcome to the forum. We all have to start somewhere so do not worry about that as the forum members help beginners to experts. I would start by having a read of some of the back issues of the Pi magazine - they are all available as PDFs from https://www.raspberrypi.org/magpi/issues/ and some can be...
by Andyroo
Sun Aug 11, 2019 11:54 am
Forum: Python
Topic: Problem with my OLED time, date, weather script.
Replies: 6
Views: 214

Re: Problem with my OLED time, date, weather script.

Without seeing you code its just about impossible to debug this!

You could check:

1) That temp is defined in the main code
2) That temp is used consistently and not Temp (python is case sensitive)
3) You have Global temp in the function that has the error
by Andyroo
Sun Aug 11, 2019 11:42 am
Forum: Troubleshooting
Topic: Pi 4 ethernet dropping often
Replies: 5
Views: 245

Re: Pi 4 ethernet dropping often

One test you could do is flash an SD card with Buster for the 3B+ and see if it is stable. You then know if its the 4 hardware (if its stable) or the switch / config (if it fails) Its possible to use the Pi 4 image on the 3B+ but starting again allows you to tweak any settings without impacting the 4.
by Andyroo
Sun Aug 11, 2019 12:02 am
Forum: Staffroom, classroom and projects
Topic: PiNet for Buster and the Pi 4B
Replies: 3
Views: 374

Re: PiNet for Buster and the Pi 4B

Just to say a big thank you for the update and the work you have put in so far.

Hope the job goes well and you enjoy the new stage of your life.
by Andyroo
Sat Aug 10, 2019 11:55 pm
Forum: Troubleshooting
Topic: Strange Problem with samba share, can access on laptop but not from a pc?
Replies: 10
Views: 162

Re: Strange Problem with samba share, can access on laptop but not from a pc?

WOW :o I was involved in the TT breach of data so I would not use them again anyway :lol: (personal choice - others are happy etc etc - this is a personal comment and does not reflect the thoughts of others such as (but not limited to) the Raspberry Pi Trading or Foundation companies or hosts of thi...
by Andyroo
Sat Aug 10, 2019 11:49 pm
Forum: General discussion
Topic: Raspberry Pi 4 Availability in Israel (red tape issue)
Replies: 16
Views: 728

Re: Raspberry Pi 4 Availability in Israel (red tape issue)

anonymous123 wrote:
Sat Aug 10, 2019 9:12 pm
...
If anyone has had any luck ordering to Israel send me a PM.
PMs are not enabled on this forum (reason is it's child friendly I think).

Go to advanced search