Skip to main content ↑ ↓

Messages

This section allows you to view all Messages made by this member. Note that you can only see Messages made in areas you currently have access to.

Messages - riktw

2
Project development, ideas, and suggestions / Re: Idea for FPGA trainer "deluxe"
Ebay them, I got this:
http://www.ebay.com/itm/Cyclone-NIOS-II ... 3a7c56be49
It has a Altera cyclone II FPGA (avaiable in solderable packages) and contains a USBblaster to program them.

Features are fun, SDRAM, SRAM, Flash, 16*2 LCD, PS2, VGA, IR for remote, SD card, some 7 segments, LED's and buttons.
They got quite some VHDL and Verilog examples on the CD and schematics and stuff too.
Some with chinese comment but hey ;)
Also included are some examples for the softcore CPU NIOS from Altera.

Kinda hard to beat for 80 dollars :)
5
Sick of Beige / I also made a casing :) (custom 5031)
Hello all,

I also made a small casing for my PCB, first time ever I used Sketchup, think it came out alright :)
Here are some pics:
Project is still busy, it will be a CMSIS-DAP ARM debugger, will post something about it on http://www.simplecortex.com in a week when all tests are done :)
Sneak peek for you guys ;)

SoB cases from SEEED:
http://img441.imageshack.us/img441/9553/img112p.jpg

A finished PCB including bodge crystal in the casing:
http://img708.imageshack.us/img708/8299/img111i.jpg
http://img829.imageshack.us/img829/1411/img110cd.jpg

Files to make the SoB cases are in the attachment :)
7
General discussion / Murata has some inductor/capacitor lessons
Hello,

When looking for a small switching power supply module at the website of Murata I found this:
http://www.murata.com/products/emicon_fun/index.html
They have some lessons about how capacitors and inductors work.
Of course, as they make caps and coils it's a bit self promotion but the lessons look quite useful.
Caps: http://www.murata.com/products/emicon_f ... index.html
Coils: http://www.murata.com/products/emicon_f ... index.html

I guessed, why not share it :)
8
General discussion / Re: Big Box of Parts
Here an update
Box is indeed at my place till tomorrow.
It will go to Jawi next.
This is what I took out:
http://http://www.brc-electronics.nl/Fotos/Random/DSC02351.JPG
And what I put in:
http://http://www.brc-electronics.nl/Fotos/Random/DSC02347.JPG
http://http://www.brc-electronics.nl/Fotos/Random/DSC02348.JPG
Lets see:
About 10 PIC's, some 16F, some 24H and a DSPic.
Some Atmega328's with Arduino 0022 bootloader.
Some LPC1113 ARM Cortex M3 devices from NXP (Can be programmer with flashmagic via a serial port if you like that)
A CPLD breakoutboard, uses a Altera Max V CPLD, don't have the schematic anymore :(
Some PCB's for a 78XX power supply
2 Simplecortex PCB's, old revision(0.5), eagle files can be found here: http://www.brc-electronics.nl/hardwar
2 SMD sockets, don't know for what package, looks big :)
2 1200V 150A IGBT's, for some sick coilgun perhaps?
Some cheap LED strips.

And as nixie tubes are something most people here like I threw in some other old parts, 2 radiotubes, both triodes.
A 56 tube and a 227 tube, both really old stuff, the 227 tube is from 1930s, 56 tube around WWII, 1940's I guess.
Datasheets can be found here: http://frank.pocnet.net/index.html
14
Project development, ideas, and suggestions / Re: Simplecortex, a ARM Cortex dev board
Very true, uClinux can run on a M3 but it needs to have a couple of MByte external RAM.
The LPC1788 should be able to run it.
But when using linux the realtime idea is gone, switching IO, reading ADC etc is a lot slower then, simply because there is an operating system avaiable.
The Simplecortex can run CoOS, a tiny realtime OS made by CooCox.
But again, think of it as a fast arduino with debugging and a nice eclipse based IDE (but then simple and easy to use, making a new project is really easy)
Debugging is really really helpful, placing breakpoints and pausing code works wonders on bug finding :D
15
Project development, ideas, and suggestions / Re: Simplecortex, a ARM Cortex dev board
Think of it like a fast big arduino.
The beaglebone or raspberry pi run linux, the Simplecortex is bare metal just like the arduino.
But the Simplecortex has more flash, ram and peripherals then the arduino.
The higher clockspeed and the fact that it's a 32 bit microcontroller make it possible to use a color lcd without problems.
I made a test program that hosts a website, uses the microsd, showed stuff on the LCD and more, still not close to max of the Simplecortex.
But the fact that you don't have to worry about speed and code size is quite nice :)

The onboard debugger also is wonderful, it makes programming so much easier.
The debugger can program almost all ARM devices from NXP, ST, TI and some other manufacturers.
No more bootloaders and stuff :)

( ! ) Fatal error: Uncaught exception 'Elk_Exception' with message 'Please try again. If you come back to this error screen, report the error to an administrator.' in /var/www/dangerousprototypes/forum/sources/database/Db-mysql.class.php on line 696
( ! ) Elk_Exception: Please try again. If you come back to this error screen, report the error to an administrator. in /var/www/dangerousprototypes/forum/sources/database/Db-mysql.class.php on line 696
Call Stack
#TimeMemoryFunctionLocation
10.01622446848session_write_close ( )...(null):0
20.01652578448ElkArte\sources\subs\SessionHandler\DatabaseHandler->write( )...(null):0
30.01652579224Database_MySQL->query( ).../DatabaseHandler.php:119
40.06132717960Database_MySQL->error( ).../Db-mysql.class.php:273