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by Ronaldlees
Thu Oct 05, 2017 7:25 pm
Forum: Off topic discussion
Topic: is software harder than hardware? :)
Replies: 43
Views: 11536

Re: is software harder than hardware? :)

It kind of depends what type of software you're writing. If it's userland software, high level, and abstracted from the hardware, then that's one thing that can be complex due to its sometimes enormous bulk. If it's software that needs to tie to the hardware (i.e., hardware kernel drivers and such) ...
by Ronaldlees
Thu Oct 05, 2017 7:07 pm
Forum: General discussion
Topic: Powering the Pi and pi peripherals?
Replies: 1
Views: 1229

Re: Powering the Pi and pi peripherals?

Hi: This isn't really advice, cuz there are so many variables. Anyway, I don't know about you, but I have a number of different wall wart style power supplies lying around. Some of them are 5V, some are 12V, and some are 20V DC supplies. Some are for laptops that require a 20 V supply. In the past I...
by Ronaldlees
Wed Sep 27, 2017 3:21 pm
Forum: Off topic discussion
Topic: Raspberry Pi for the post apocalypse survivalist.
Replies: 13
Views: 3447

Re: Raspberry Pi for the post apocalypse survivalist.

Power, internet communications, entertainment? I have the answers right here: Power - solar on my rocking boat, kept at just the right angle with Pi powered servos. Internet - not needed, have stored entire internet on my Pi powered SSD. Communications - Why? Entertainment - watching all you sillies...
by Ronaldlees
Tue Sep 26, 2017 4:46 pm
Forum: Bare metal, Assembly language
Topic: lwIP - A Lightweight TCP/IP stack
Replies: 20
Views: 8402

Re: lwIP - A Lightweight TCP/IP stack

Ethernet over GPIO, has some one be thinking about the Xerox Alto:-) ? That is definately doable . Heck if we are delving into sof hardware what about VGA over GPIO? I too wonder what the speed of such a thing might be. RISCOS comes to mind, as I've been trying to figure a way to do WiFi without th...
by Ronaldlees
Tue Sep 26, 2017 4:26 pm
Forum: Other projects
Topic: Chartplotter : a PI on a sailboat!
Replies: 13
Views: 9639

Re: Chartplotter : a PI on a sailboat!

... One interesting place for PiZero ePaper. ... "ePaper / eInk is a display technology that mimics the appearance of ink on normal paper. Unlike conventional displays, ePaper reflects light – just like ordinary paper – and is capable of holding text and images indefinitely, even without electricit...
by Ronaldlees
Sun Sep 24, 2017 10:37 pm
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5941

Re: Simple walkie talkie software over TCP ?

For a really nice, latency resistant UDP command line audio link, see: http://www.pogo.org.uk/~mark/trx/ I use it on my Pi2, and it works well for me. Interesting. Do you have a write-up? I've been looking for something we can use around the house Hi, I didn't do a very detailed writeup, but only a...
by Ronaldlees
Sun Sep 24, 2017 3:07 pm
Forum: Other projects
Topic: waterthight case
Replies: 18
Views: 9728

Re: waterthight case

I have the clear top case shown in the pic. It's pretty nice, but is not 100% watertight. It comes with a length of thin round rubber gasketing that I pushed into a slot under the lid to keep out water. Unfortunately, it's a single cut length of gasket, and not a loop like a belt. So, a small amount...
by Ronaldlees
Sun Sep 24, 2017 2:45 pm
Forum: Networking and servers
Topic: Jessie can't get static IP wlan to use dhcp server
Replies: 25
Views: 4162

Re: Jessie can't get static IP wlan to use dhcp server

Is the dhcpd setup different for different ISC servers? I'm using a compiled ISC server (is that what's on Raspbian by default?) - and it uses this config: option domain-name "my-domain"; option domain-name-servers 192.168.1.52; option domain-name-servers 192.168.1.52; option subnet-mask 255.255.255...
by Ronaldlees
Sun Sep 24, 2017 1:55 pm
Forum: Other
Topic: Alpine in Raspberry PI 1 Model B
Replies: 4
Views: 2767

Re: Alpine in Raspberry PI 1 Model B

What you're saying follows with my experience. My Pi2 boards boot with Alpine up thru version 3.4 - but not 3.5 or 3.6. Probably 3.5 and 3.6 work on a Pi3 - just guessing.
by Ronaldlees
Sun Sep 24, 2017 2:54 am
Forum: RISCOS
Topic: FTDI Serial USB?
Replies: 7
Views: 8032

Re: FTDI Serial USB?

This SerialUSB has been working great for me (so far) with the RC15 image:

http://ftpc.iconbar.com/usb/SerialUSB.zip
by Ronaldlees
Sun Sep 24, 2017 2:33 am
Forum: RISCOS
Topic: What can I do with RISCOS?
Replies: 14
Views: 17429

Re: What can I do with RISCOS?

Take a look at my website http://www.markerdesign.be I'm a self implooid Industrial designer. So there forea desktop user. All what you see on my webside has been made using RISCOS! I use nothing alse... only FireFox on my Mac. And even there I have RISCOS virtually installed on my MacBook Pro. I u...
by Ronaldlees
Thu Sep 21, 2017 1:38 pm
Forum: RISCOS
Topic: RISCOS I2C Access
Replies: 6
Views: 14047

Re: RISCOS I2C Access

I have an MCP23017 16 Port I/O extender board and an ADXL345 Acceleromter, both of which are I2C devices. Been a while, but I broke out BBC Basic, and started mucking about with SWI IIC_Control, and hey presto, I can now read/write both devices straight from Basic 5. You might want to look at SWI O...
by Ronaldlees
Thu Sep 21, 2017 1:28 pm
Forum: General programming discussion
Topic: Simple walkie talkie software over TCP ?
Replies: 19
Views: 5941

Re: Simple walkie talkie software over TCP ?

For a really nice, latency resistant UDP command line audio link, see:

http://www.pogo.org.uk/~mark/trx/

I use it on my Pi2, and it works well for me.
by Ronaldlees
Thu Sep 21, 2017 1:17 pm
Forum: For sale
Topic: Solar Panel & Battery Boxes
Replies: 33
Views: 33269

Re: Solar Panel & Battery Boxes

I live in Scotland. Whats the 'sun'? LOL. I'm in the southern US, so one would think I have good "solar reception". Unfortunately, I live in jungle of trees. To get decent solar here I'd have to separate the Pi and panel, and put the panel somewhere on the edge of the lot. I have a small panel, and...
by Ronaldlees
Thu Sep 21, 2017 1:03 pm
Forum: General discussion
Topic: The best Sandisk SD card type for a Pi?
Replies: 19
Views: 41390

Re: The best Sandisk SD card type for a Pi?

Ab1jx sounds ham. Yup. I've been licensed twice, and with another ham I've known in real life for 35 years or so we figured out that it's the technology and studying that's more interesting than being on the air. I have to put up antennas and run hundreds of transmitter watts to talk to someone I c...
by Ronaldlees
Thu Sep 21, 2017 12:24 am
Forum: General discussion
Topic: Pi Web Server Local Security Worries.
Replies: 9
Views: 3366

Re: Pi Web Server Local Security Worries.

You'll be vulnerable when you expose your IP, no doubt. There are some things you can do to help mitigate problems. I'm not a security expert, but some people at makezine have a nice article that could get you started: https://makezine.com/2017/09/07/secure-your-raspberry-pi-against-attackers/ There...
by Ronaldlees
Wed Sep 20, 2017 1:53 pm
Forum: General discussion
Topic: Looking for a Bluetooth keyboard for my Pi 3B
Replies: 7
Views: 3799

Re: Looking for a Bluetooth keyboard for my Pi 3B

The first Aerb bluetooth keyboards were great, and worked on a Pi2. They were about ten inches wide, but had only an inch or so less span than a full-sized keyboard within the main key section of the keyboard. There was no numeric keypad though. Unfortunately, I see they only carry the round gameboa...
by Ronaldlees
Wed Sep 20, 2017 1:35 pm
Forum: General discussion
Topic: The best Sandisk SD card type for a Pi?
Replies: 19
Views: 41390

Re: The best Sandisk SD card type for a Pi?

Interesting. I'm watching my Sandisk 32 and 128 go in for warranty replacement. You could put a spare SD in a reader plugged into a USB port, but you'd have to have it running and change your fstab and cmdline.txt to change where it boots from. Might be best to use USB boots by default then they're...
by Ronaldlees
Tue Sep 19, 2017 1:41 pm
Forum: General discussion
Topic: The best Sandisk SD card type for a Pi?
Replies: 19
Views: 41390

Re: The best Sandisk SD card type for a Pi?

You mentioned that the uSD was running for a year in your device. It's not much publicized, but NAND (the memory type in the card) - can have a pretty short decay time before it allows bitrot of data (I've read somewhere that cheap cards can have as short as a nine month decay). I think SanDisks are...
by Ronaldlees
Sun Sep 17, 2017 5:22 pm
Forum: Automation, sensing and robotics
Topic: Solution for water pump control, RPi suitable?
Replies: 7
Views: 3856

Re: Solution for water pump control, RPi suitable?

I've seen some other projects on the forum here, to do what you want to do. In general, I'm against using a complex architecture to do a simple task. For example, my HVAC unit has an 8 bit MCU for control. It hasn't done anything wrong, nor has it reset in 15 years. Cuz it's simple. How much trouble...
by Ronaldlees
Tue Sep 05, 2017 12:55 pm
Forum: Automation, sensing and robotics
Topic: Using sparkfun photon weather shield with a Pi
Replies: 7
Views: 1582

Re: Using sparkfun photon weather shield with a Pi

Ah, yes, I suppose it will be! I'll get hold of one then. Thanks very much for your advice! LOL. I really don't give advice, but if I did the Photon wouldn't be a bad bet! They're a whole new world, sorta like the Pi is when you first look at it. They're nicely positioned between the low end (8 bit...
by Ronaldlees
Tue Sep 05, 2017 12:28 pm
Forum: Automation, sensing and robotics
Topic: Using sparkfun photon weather shield with a Pi
Replies: 7
Views: 1582

Re: Using sparkfun photon weather shield with a Pi

So, you want to power the shield from the Pi 3.3VDC bus. This *seems* to me to be OK (but again, I don't have that shield). The schematic on the Sparkfun site should give you an idea of where to tie into the shield, and where to bypass the shield's regulator. I didn't look at the site you referenced...
by Ronaldlees
Mon Sep 04, 2017 2:09 pm
Forum: Other projects
Topic: What to make/get a e-ink depolarized HDMI display.
Replies: 2
Views: 901

Re: What to make/get a e-ink depolarized HDMI display.

I wonder if you mean "like an eink" monitor, but one that is an LCD without polarizing filter, since the filter is what kills daylight readability. The polarizing is how the LCD works. About the closest thing that reduces the light attenuation are transflective displays - but they still have an "opt...
by Ronaldlees
Mon Sep 04, 2017 1:56 pm
Forum: Off topic discussion
Topic: My love hate relationship with cheap electronics grows...
Replies: 5
Views: 3108

Re: My love hate relationship with cheap electronics grows...

thecoolway wrote:
Mon Sep 04, 2017 3:07 am
It's love when you get to create something out of the cheapest parts, and hate when you are able to create something but it starts malfunctioning afterwards. :lol:
If it all "just worked" - you'd have to find another hobby to occupy your time!
by Ronaldlees
Mon Sep 04, 2017 1:19 pm
Forum: Automation, sensing and robotics
Topic: Using sparkfun photon weather shield with a Pi
Replies: 7
Views: 1582

Re: Using sparkfun photon weather shield with a Pi

Thanks for your reply! I actually don't have a Photon, just came into posession of the board. It's what the process for connecting to the GPIO I'm confused about (found a diagram for doing so to a previous iteration of the shield, but it has a different power setup to this current version), and wha...

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