• Electronics and Embedded Programming V2
    1,309 replies, posted
  • I just got some great deals on eBay. Unfortunately a lot of it will be coming in 3-4 weeks which is a bummer.
  • After ordering some nice Panasonic caps for the powersupply of the TV and soldering it all (desoldering heatsinks sucks) the TV works again. Hooray.
  • [img]http://i.cubeupload.com/sqgifz.png[/img][img]http://i.cubeupload.com/MjPotx.png[/img] I will have them up for download some time tomorrow, I still need to finish a few more symbols.
  • OK guys so I am still working on the n64 protocols stuff using a couple of sites I found: [url]http://courses.cit.cornell.edu/ee476/FinalProjects/s2002/jew17/lld.html[/url] [url]http://inst.eecs.berkeley.edu/~cs150/fa04/Lab/Checkpoint1.PDF[/url] Using the data I garnered from these I created this code: [CODE]int inc=0; void setup() { //pinMode(A0, INPUT); Serial.begin(9600); //digitalWrite(2,LOW); //analogWrite(A0,255); //delay(100); byte x = 0b000000011; byte data = 0b100000000; for (byte mask = x; mask>0; mask <<= 1) { if(data & mask) { digitalWrite(2,0); delayMicroseconds(3); digitalWrite(2,1); delayMicroseconds(1); } else { digitalWrite(2,0); delayMicroseconds(1); digitalWrite(2,1); delayMicroseconds(3); } for(int i=0;i<32;i++) { delayMicroseconds(2); Serial.println(digitalRead(2)); } } } void loop() { //digitalWrite(2,1); //Serial.println(digitalRead(2)); //Serial.println(digitalRead(2)); } [/CODE] Which should display the button presses once, but just prints off 32 1s, which isn't right, can anyone work out what is wrong?
  • [QUOTE=DrLuke;30559591]Is that a Wattmeter symbol I see there? Do these even exist?[/QUOTE] Yes they do. [url]http://en.wikipedia.org/wiki/Wattmeter[/url]
  • Well, they're really just a combination of a Voltmeter and an Amperemeter anyways, right?
  • [QUOTE=DrLuke;30560359]Well, they're really just a combination of a Voltmeter and an Amperemeter anyways, right?[/QUOTE] Wrong, they contain a fair amount of circuitry depends on the quality of the meter, most decent ones these days can measure kWh, power factor, reactive, apparent and true power.
  • Got myself 2 cheap LED matrix modules (each module is 16 * 32, they where €5 when I got them). These where used in buses to display what line it was and where it was going. I figured out how they work and wrote some code on a pic 16f628 and a small application in VB to make them do something interesting: [url]http://dl.dropbox.com/u/699251/led%20display/IMG_1452.JPG[/url] (goddamnit, one character short...) You can send images to the display as well: [url]http://dl.dropbox.com/u/699251/led%20display/IMG_1453.JPG[/url] [url]http://dl.dropbox.com/u/699251/led%20display/IMG_1455.JPG[/url] Now I feel stupid for not buying more displays... :(
  • [url]http://hackaday.com/2011/06/17/devboard-deal-ti-experimenter-board-for-15-50-off/[/url] Bought one of these and 2 LaunchPads. I love TI. I think I'm going to use one of the LaunchPads for my intervalometer/high speed photography trigger.
  • My symbol pack is now available! It can be used with Adobe Illustrator and any other vector graphics program (not yet tested). [url]http://chryseus8086.co.uk/?page_id=76[/url]
  • [QUOTE=Chryseus;30569198]My symbol pack is now available! It can be used with Adobe Illustrator and any other vector graphics program (not yet tested). [url]http://chryseus8086.co.uk/?page_id=76[/url][/QUOTE] This is great! I'm used to working with Photoshop and Illustrator, so making circuit diagrams is going to get a lot easier for me! [editline]20th June 2011[/editline] Okay, this is a new level of awesome! [url]http://www.engadget.com/2011/06/20/jack-eisenmanns-duo-adept-a-homebrew-8-bit-computer-built-by-a/[/url] This kid built an 8-bit computer using 100 common IC's (making up a custom CPU, GPU, and more!) and a fuck ton of wire!
  • Started working on my setup to make an RC car without a microcontroller, I've made a small test with a Servo Tester app from Cellbots on my android tablet and an old broken computer fan with a Modulated signal wire to control the fan speed, In theory I can have up to 4 servos connected to a single audio jack, it's still considered Embedded, right? [img]http://s3.noelshack.com/uploads/images/18928411999497_06232011047.jpg[/img] (Add me to the list if possible, this is a FlyTouch 2.0_105, my Defy should work with this too but I haven't tested)
  • I wanna get into a bit of arduino programming at some point in the near future but dont know what to start with or how ambitious to aim for my first project
  • I (somewhat) made a song by pulsing a relay. It sounds like shit but its still a pretty cool way to make a sound.
  • I'm starting up a couple of projects for the mid-year break, and need some way of playing mp3 or wav files (of halfway decent quality). Anyone done anything similar or have any advice? At the moment I'm looking at either [url]http://www.adafruit.com/products/94[/url] or [url]http://www.ebay.com.au/itm/Arduino-MP3-Player-Shield-new-and-improved-version-/300568892319?pt=AU_B_I_Electrical_Test_Equipment&hash=item45fb4d539f[/url] The more cheaply I can do this the better. I'll keep everyone updated as I make progress!
  • [img]http://a5.sphotos.ak.fbcdn.net/hphotos-ak-snc6/205073_1957036211373_1406770943_2174332_4105889_n.jpg[/img] my work area, still like that...
  • Can I power a ps2 controller via my arduino uno? Or do I need an outside power source? I'm pretty new, and I was wondering if you can power things that are rated at 5v via the arduino, or if you need an external power source. Don't want to break my uno.
  • [QUOTE=WTF Nuke;30722020]Can I power a ps2 controller via my arduino uno? Or do I need an outside power source? I'm pretty new, and I was wondering if you can power things that are rated at 5v via the arduino, or if you need an external power source. Don't want to break my uno.[/QUOTE] As long as you do not exceed the maximum power rating you can power stuff with the Uno. From the 5V you can not draw more than about 350mA (the Uno has a 400mA fuse), from the 3.3V you can draw 50mA and from each pin you can draw 40mA but the total must not exceed the fuse rating.
  • How can you power something with a battery pack or what not and still control it with the Arduino? I haven't really looked into it but it would be nice to know how.
  • [QUOTE=ryan1271;30724994]How can you power something with a battery pack or what not and still control it with the Arduino? I haven't really looked into it but it would be nice to know how.[/QUOTE] If by "control it with the arduino" you mean switch it on/off, you could always use transistors.
  • I've been trying to get this to work: [url]http://www.billporter.info/playstation-2-controller-arduino-library-v1-0/[/url] It works, but when I press the d-pad, the pressure prints as 0. It also says "Controller found but not accepting commands". What does that mean?
  • [QUOTE=DrLuke;30728872]Transistors or relays. Although transistors are way cheaper.[/QUOTE] If he's just using a battery pack he probably won't need a relay.
  • Now presenting my article on impedance: [url]http://chryseus8086.co.uk/?p=98[/url] If you have any questions or problems understanding it then SAY SOMETHING so I can try make it more beginner friendly.
  • Guys, you know how when soldering, you let the soldering pen heat up for a few minutes, then tip it, and then you touch the soldering pen to the joint, and make the solder touch the joint on the other side, so the joint gets hot and melts the solder onto itself? Well that doesn't happen. It just doesn't. The solder stays solid unless it directly touches the solder pen. I don't know why I fail so hard. Help.