Raspberry Pi Forums

DaveTheWalker

Hi Scotty,

That looks like a great call - I'll check it out. I've installed it, and I'm going through the documentation, but it looks to be very close to what I need.

Thanks again,
Dave

DaveTheWalker

Hello all, I have a project that I'd like some help with. I'm trying to make a media centre that interfaces with some control hardware (could be buttons, could be something else - not relevant for this part of the conversation). What I need is to be able to get OSMC to automatically play a video/son...

DaveTheWalker

Thanks for your help... I still get this, though: In[1]:= WeatherData[{"Abingdon","Oxfordshire","UK"},"Temperature"] Initializing WeatherData indices .... Initializing WeatherData indices .... Initializing CityData indices .... Initializing CityData indices .....

DaveTheWalker

Thanks Dougie - I got the net connection working eventually!.... now, any idea how to save a program?

DaveTheWalker

I'm trying a relatively simple WeatherData request on my Model B (256MB) - I've set the memory split to only give 16MB to the graphics, but I get this error. Any ideas? In[1]:= WeatherData["Harwell"] Installing data from Wolfram Research data server .... Initializing WeatherData indices .....

DaveTheWalker

Sorry, this should be in the Wolfram Language forum!

Could a moderator move it for me?

Thanks!

DaveTheWalker

Hello, I've been having fun with the command-line Wolfram Language interpreter across a serial terminal (The graphical one is WAY too slow on my 1st gen. Pi). I have a couple of queries: 1) How do I save a session to a file, or write a program so I can run it later? 2) I can't get it to connect to t...

DaveTheWalker

Hi Gert,

I noticed that Farnell are now advertising the Gertuino....but there's still no data on it! Can you spill the beans yet?

Dave

DaveTheWalker

Has anyone seen this yet?

http://www.bugblat.com/products/pif/

Looks like an excellent step up from the Guzunty CPLD board, and is reasonably priced...although shipping is a bit of a drag to the UK.

Anyone tried one yet??? It's on my Christmas list!
Dave

DaveTheWalker

Something like this might come in handy: http://www.adafruit.com/products/1378 It seems that controlling LEDs is a common task. These chips require a stable clock source, so offloading some of the control to an Arduino might be a way forward, but you could still use to Pi to oversee the whole job an...

DaveTheWalker

You'd do well to look into the OBD-II on-board diagnostics interface, and maybe consider looking at something like the "Torque" Android app for some pointers. If you want to do it with the Pi, I think there are some other OBD projects on the go at the moment - have a search around the foru...

DaveTheWalker

It looks like what you need is three PWM channels. Software-controlled PWM (Pulse-Width Modulation) would probably be fine for your application. Have a look through the forums and see if anyone's got three independent PWM channels running on a Pi already. If so, then all you'll need are three driver...

DaveTheWalker

Hi Peter, I just spoke to Cypress, because I was surprised to see the PSoC5 discontinued... Good news! The PSoC 5 was an early release silicon with some de-rated features to get the part in to production for some lead customers. This has been replaced by the PSoC 5 LP. The specification of this part...

DaveTheWalker

Just to chip in on this thread... A while back, I had the opportunity to play with some Cypress PSoC5 chips: http://www.cypress.com/?id=2233 They have a programmable CPLD section, an embedded processor and some configurable analogue blocks. At the moment, it's all set up using their drag-and-drop gr...

DaveTheWalker

I also have a Zeo and a Pi... I'd be interested in any updates

DaveTheWalker

Well, at sea level melt-water from ice (that still has ice in it) is always at 0 degrees Celsius.

Alternatively, do what everyone else does and cross-calibrate with a thermometer you trust.

DaveTheWalker

Hi - sounds like fun! You say you don't have a GuzuntyPi, but you've obviously heard of them, and what you're trying to do is almost exactly the same as what happens on the Guzunty. I suggest you read through all the documentation for that project (schematics, software tools etc..) until you underst...

DaveTheWalker

If you're feeling *really* adventurous, you could try something like this:

https://www.sparkfun.com/products/10138

DaveTheWalker

Anyway, LTC2315-12 looks like a nice chip I need source it somewhere http://uk.farnell.com/linear-technology/dc1563a-a/ltc2315-12bit-5msps-sar-adc-eval/dp/2327950?Ntt=LTC2315-12 Farnell have an evaluation board, which might be a nice way to get into testing with this chip. If you're outside the UK,...

DaveTheWalker

Just thought I'd throw in my tuppence-worth. Trickle charging NiMHs is OK, but not really "supported" by the manufacturers. Having discussed it at length with some of the manufacturers, I can report that a charge current of C/30 will do no damage at all under most conditions. Therefore, if...

DaveTheWalker

good call Elektrknight

Still, everyone has an upgrade in mind for the future, right?!

DaveTheWalker

You might consider a Guzunty CPLD to take some of the SPI overhead off the main processor...

DaveTheWalker

Quick additional query - when driving a clocked core, do I need to bridge JP11 so that GCK1 can get across?

If not, how do I clock it?

If so, how does gz_test work without this link??

Many thanks,
Dave

DaveTheWalker

Woohoo!

It works now. You're a genius

Thanks for helping me to get my "Hello World" inverter off the ground - I really appreciate it.

Cheers,
Dave

DaveTheWalker

Well, I followed this guide to make an xsvf file and got one with about 101kB: http://dangerousprototypes.com/docs/Export_%28X%29SVF_from_Xilinx_ISE_Webpack (and actually, it's the same as your method) but I get this error message: pi@raspberrypi:~/Dave/guzunty$ sudo gz_load in1_out2.xsvf Guzunty lo...

Search found 36 matches

Re: OSMC control via Python

OSMC control via Python

Re: No more memory available

Re: Saving programs, and Internet connection

No more memory available

Re: Saving programs, and Internet connection

Saving programs, and Internet connection

Re: Gertboard, RISC OS and BASIC

Bugblat PIF FPGA board

Re: Controlling many lights individually

Re: Digital gauges

Re: DIY RGB LED Controller Help

Re: CPLD Programming over GPIO

Re: CPLD Programming over GPIO

Re: Zeo + RasPi In An Attempt to Trigger Lucid Dreaming

Re: Calibration of temperature sensor

Re: CPLD Programming over GPIO

Re: RPi remote sensor.

Re: High speed data acquisition AND real time processing

Re: Providing power for intermittent power loss

Re: High speed data acquisition AND real time processing

Re: High speed data acquisition AND real time processing

Re: Guzunty Pi. New users start here.

Re: Guzunty Pi. New users start here.

Re: Guzunty Pi. New users start here.