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by hippy
Mon Nov 23, 2020 12:57 am
Forum: Assistive technology and accessibility
Topic: Advice on building a keyboard text-to-speech device?
Replies: 5
Views: 237

Re: Advice on building a keyboard text-to-speech device?

Here's a fast track starter for a standard Pi desktop install. Install 'espeak' and check that works ... sudo apt-get install espeak espeak "hello" --stdout | aplay Now create a 'tts-server.py' ... #!/usr/bin/python2 import BaseHTTPServer import urllib import os WEB_PAGE = """ <html><body> <h3>Pleas...
by hippy
Sun Nov 22, 2020 11:53 pm
Forum: Troubleshooting
Topic: Reading from /dev/serial0 changes group from dialout to tty and read permisson is gone
Replies: 10
Views: 518

Re: Reading from /dev/serial0 changes group from dialout to tty and read permisson is gone

Note the Python code does things with "getty". I didn't analyse it further but there could be something in that.

https://github.com/UedaTakeyuki/mh-z19/ ... /mh_z19.py
by hippy
Sun Nov 22, 2020 7:22 pm
Forum: Off topic discussion
Topic: Soldering projects (Pi or not) for beginners
Replies: 9
Views: 543

Re: Soldering projects (Pi or not) for beginners

Sounds like your already fully qualified to solder up almost any Pi project that inspires you.. I'd echo that; it seems the OP is already good to go. It's putting soldering iron to joint the first time which is the major step. After that it's just a matter of doing it, getting better at it, learnin...
by hippy
Sun Nov 22, 2020 7:07 pm
Forum: Assistive technology and accessibility
Topic: Advice on building a keyboard text-to-speech device?
Replies: 5
Views: 237

Re: Advice on building a keyboard text-to-speech device?

Basically, I'm imagining something that looks vaguely like the Allora 2 device (albeit much, much less fancy). A small screen so I can read and edit text before sending, a keyboard, a speaker, I guess some kind of battery so I can bring it with me on the go, and that's pretty much it. Looks to me l...
by hippy
Sat Nov 21, 2020 8:55 pm
Forum: Networking and servers
Topic: CYW43455 (3B+, 4B, CM4) WiFi feedback thread
Replies: 41
Views: 1462

Re: CYW43455 (3B+, 4B, CM4) WiFi feedback thread

trejan wrote:
Sat Nov 21, 2020 8:19 pm
The module in the CM4 and Pi 400 both have RPI-RM0 etched onto it together with the same FCC and IC IDs.
Perhaps that's a board manufactured before the Pi 400 application was granted ?

2020-11-03 - https://fccid.io/2ABCB-RPIRM0
2020-11-17 - https://fccid.io/2ABCB-RPI400
by hippy
Sat Nov 21, 2020 7:58 pm
Forum: Networking and servers
Topic: CYW43455 (3B+, 4B, CM4) WiFi feedback thread
Replies: 41
Views: 1462

Re: CYW43455 (3B+, 4B, CM4) WiFi feedback thread

That post doesn't mention CM4 but that means the RPI-RM0 module has a different chip in it depending on whether it is fitted to the CM4 or the Pi 400. The documentation and data filed with the FCC state "The Raspberry Pi RM0 module has an IEEE 802.11b/g/n/ac 1x1 WLAN, Bluetooth 5 and Bluetooth LE m...
by hippy
Sat Nov 21, 2020 4:01 pm
Forum: Beginners
Topic: Installer software thinks Python 3 is Python 2
Replies: 5
Views: 307

Re: Installer software thinks Python 3 is Python 2

Is there some reason both versions are installed? Like something that needs the older version? and is there some way to set it so that it defaults to the newer one? Python 2 code needs Python 2 installed and won't work with Python 3. Python 3 code needs Python 3 installed and won't work with Python...
by hippy
Sat Nov 21, 2020 3:51 pm
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

Re: BBC's Dr Who goes RISC-V to teach computing

I don't think it would be necessary or even advisable to try a bare metal adaptation. Instead, customize your Linux installation so that the BBC IDE comes up instead of Raspberry Pi desktop. Agreed. Something 'buildroot' rather than bare metal would seem the best way to go. That's the approach take...
by hippy
Sat Nov 21, 2020 3:34 pm
Forum: Other programming languages
Topic: shutdown raspberry by javascript
Replies: 8
Views: 345

Re: shutdown raspberry by javascript

@app.route('/') I would add a little more security to that, better protection against yourself or someone accessing the server port and immediately shutting down your Pi but, otherwise, it's fine. With that you can also extend your functionality, so you can have your 'shutdown server' reboot rather...
by hippy
Sat Nov 21, 2020 2:59 pm
Forum: Python
Topic: snakeware: boot-to-Python linux distro
Replies: 6
Views: 335

Re: snakeware: boot-to-Python linux distro

It does what it says on the tin; quickly boots a Pi 4B straight into a Python 3.8.2 command prompt. It is exactly what some thought a Pi should have been, what Eben's original vision seems to have been. Even though it's Python not Basic, it perfectly recreates the experience of getting one's first H...
by hippy
Fri Nov 20, 2020 5:45 pm
Forum: Troubleshooting
Topic: Having problems powering LED Strip - keep melting wires
Replies: 12
Views: 310

Re: Having problems powering LED Strip - keep melting wires

I just dont get how simply connecting the ground pin with using separate power adapter/PSU would cause a short circuit? It wouldn't or shouldn't; so there's something else going on. When you wired the 60A PSU to a USB-C plug and powered the Pi from that, the plug shouldn't have got hot either. That...
by hippy
Fri Nov 20, 2020 5:36 pm
Forum: Troubleshooting
Topic: Win10 cannot ping Pi but can ping other computers
Replies: 1
Views: 41

Re: Win10 cannot ping Pi but can ping other computers

Can the Pi ping the Win 10 PC ? Worth trying that then seeing if it can ping the Pi. I've had some weird issues with Windows not seeing Pi's, sometimes not seeing other PC's with different versions of Windows. It may be worth disconnecting the Internet, temporarily disabling any Windows Firewall to ...
by hippy
Fri Nov 20, 2020 5:30 pm
Forum: HATs and other add-ons
Topic: RPI4 USB gadget with POE HAT
Replies: 5
Views: 209

Re: RPI4 USB gadget with POE HAT

I would recommend cutting the power wire in the gadget connecting cable or an extension lead it plugs into; then it will be.
by hippy
Fri Nov 20, 2020 5:22 pm
Forum: Troubleshooting
Topic: Raspberry Pi setup troubleshooting
Replies: 2
Views: 126

Re: Raspberry Pi setup troubleshooting

At first, I wasn't getting any signal to the monitor, but I was seeing steady red blinking. Now, the red light won't even turn on. Sounds like a problem with the power supply, failure or loose connection to the Pi. The red LED on the Pi should be permanetly on when power is supplied. First step is ...
by hippy
Fri Nov 20, 2020 4:53 pm
Forum: Networking and servers
Topic: Self-hosted dynamic DNS
Replies: 9
Views: 373

Re: Self-hosted dynamic DNS

I think the simplest solution would be to add a subdomain to my VPS which redirects to my home IP. I already have a script running every minute to check my outward facing IP address at home, and so I could use that to update a config file on the VPS via ssh telling it where to redirect to. It's pro...
by hippy
Fri Nov 20, 2020 4:39 pm
Forum: General programming discussion
Topic: Programming on RPI 4 vs. RPI 3
Replies: 2
Views: 230

Re: Programming on RPI 4 vs. RPI 3

The base peripheral address has changed for the BCM2711 (Pi 4B and friends), the mechanism for setting pull-up and pull-down resistors is very different, and there are more on-chip peripherals, so you will have to make some changes to your library. Those changes aren't that onerous when just dealing...
by hippy
Fri Nov 20, 2020 12:49 pm
Forum: Troubleshooting
Topic: Having problems powering LED Strip - keep melting wires
Replies: 12
Views: 310

Re: Having problems powering LED Strip - keep melting wires

https://i.imgur.com/cCnYSQE.png Wired like that your GPIO signal has probably become some kind of 'virtual ground' so whatever you are measuring between the two 5V rails is probably meaningless. As for the melting that has to be from excess current which suggests a short or a miswiring somewhere to...
by hippy
Fri Nov 20, 2020 12:21 pm
Forum: Off topic discussion
Topic: Share your neofetch!
Replies: 25
Views: 1214

Re: Share your neofetch!

# -off so the logo makes it not messy I have version 6.0.0 installed but the -off doesn't seem to be having any effect, the logo is still shown ... pi@Pi1B-LCD:~ $ neofetch --version Neofetch 6.0.0 pi@Pi1B-LCD:~ $ neofetch -off `.::///+:/-. --///+//-:`` `+oooooooooooo: `+oooooooooooo: /oooo++//oooo...
by hippy
Fri Nov 20, 2020 12:25 am
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

Re: BBC's Dr Who goes RISC-V to teach computing

With BBC BASIC you can plot graphics with simple commands, whereas tkinter uses html-like flow layout; it's fine for forms but horrible for just playing around with graphics. Imagine if python could do that, but also had a simple library for plotting sprites, scrolling the screen and rotating 3D sh...
by hippy
Thu Nov 19, 2020 9:08 pm
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

Re: BBC's Dr Who goes RISC-V to teach computing

The BBC cannot be seen to be directly promoting or advantaging any commercial company over any other, and Raspberry Pi is a commercial venture, even if the Foundation isn't. The BBC have always needed to have subcontractors delivering "BBC products" to get round that. They've done it before with Ac...
by hippy
Thu Nov 19, 2020 8:55 pm
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

Re: BBC's Dr Who goes RISC-V to teach computing

Hmm ... https://www.cnx-software.com/2019/12/10 ... c-microbit

I'm not sure which is cart or horse here, who's leading whom.
by hippy
Thu Nov 19, 2020 8:09 pm
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

Re: BBC's Dr Who goes RISC-V to teach computing

Why bother with a RISCV chip when there is the ESP32-SOLO-1 there, basically an enhanced ESP8266. It could be the ESP32-SOLO-1 doesn't have USB capability and it's the RISC-V chip which provides that. Most likely it comes down to SiFive having created boards with RISC-V chips coupled with ESP32's f...
by hippy
Thu Nov 19, 2020 7:25 pm
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

Re: BBC's Dr Who goes RISC-V to teach computing

The microbit scheme was a total failure. Wonder how many of the original units that were given away to pupils of a specific year group are still in use? There were plenty of problems but I am not convinced the scheme can be described as "a total failure". As to how many which were given away are st...
by hippy
Thu Nov 19, 2020 6:21 pm
Forum: Automation, sensing and robotics
Topic: Installing Box86 emulator to run .exe program for data collection
Replies: 4
Views: 276

Re: Installing Box86 emulator to run .exe program for data collection

I have been trying to install box86 from github in order to emulate the x86 arcitecture to run the .exe program. I have done everything but cannot compile it. I don't know if I'm doing something wrong or if I'm maybe missing a step. Box86 compiled and worked just fine when I tried it some time back...
by hippy
Thu Nov 19, 2020 3:15 pm
Forum: Off topic discussion
Topic: BBC's Dr Who goes RISC-V to teach computing
Replies: 32
Views: 1572

BBC's Dr Who goes RISC-V to teach computing

https://www.theregister.com/2020/11/19/bbc_doctor_who_sifive/ "The BBC has created a Doctor Who-themed miniature computer, powered by a SiFive RISC-V system-on-chip, to help teach children how to program" From the photo it looks like it's an enhanced version of the micro:bit. More microcontroller th...

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