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 .... Initializing CityData indices .... In...

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 .... Initial...

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 forum and see ...

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 you have ...

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.