Search found 1754 matches

by riden
Sun May 09, 2010 7:17 pm
Forum: PIC Microcontrollers - Software and Hardware
Topic: Accessing PIC-MINI-WEB through internet
Replies: 10
Views: 1310

Re: Accessing PIC-MINI-WEB through internet

Any small signal diode will do. The one I used was a 1N4148.
by riden
Fri Apr 16, 2010 4:55 pm
Forum: SparkFun Product Questions
Topic: Ultrasonic positioning
Replies: 3
Views: 494

Re: Ultrasonic positioning

I've seen something like this done in the past only for location by triangulation. The technique used a combination of IR and ultrasonic sensing. There are a number of issues, but you could put something together easily enough to try. Basically, the receiver needs to have a high precision timer, not...
by riden
Sat Apr 10, 2010 9:16 pm
Forum: SparkFun Product Questions
Topic: My 5 V regulator only puts out 2 V...
Replies: 11
Views: 1095

Re: My 5 V regulator only puts out 2 V...

Some regulators require capacitors on the input and output sides. What regulator are you using? BTW, if you are using a linear regulator, you may be dissipating a lot of heat due to the 15v to 5v difference.
by riden
Fri Apr 09, 2010 7:10 am
Forum: Wireless/RF
Topic: TWS/RWS-434 Wireless Link Range issues
Replies: 2
Views: 982

Re: TWS/RWS-434 Wireless Link Range issues

What kind of encoding are you using? You need some type of preamble and data balancing mechanism. I use a simple data balancing algorithm (send a byte followed by its complement) and 6" inch wires (for the 432 MHz boards) and get 50+ feet easily. You certainly should have no issues in the same room ...
by riden
Wed Apr 07, 2010 1:25 pm
Forum: Wireless/RF
Topic: WiFly GSX 802.11b/g Serial Module
Replies: 6
Views: 2101

Re: WiFly GSX 802.11b/g Serial Module

WiFi ad-hoc would not use DHCP. It would have a static IP and all ad-hoc members would be in the same subnet of static addresses. That makes sense. I was thinking about the statement in the documentation saying that it may take Windows several minutes to get an address. Because of that, I thought i...
by riden
Wed Apr 07, 2010 6:24 am
Forum: Wireless/RF
Topic: WiFly GSX 802.11b/g Serial Module
Replies: 6
Views: 2101

Re: WiFly GSX 802.11b/g Serial Module

I don't know of any reason the iPhone couldn't connect to the WiFly GSX in AdHoc mode unless the iPhone can't get an IP address from the module. Once a client connects to the GSX, serial communication is active. I just started working with the WifFly this week and it works very well. However, my wor...
by riden
Mon Apr 05, 2010 1:27 pm
Forum: Wireless/RF
Topic: WiFly GSX Breakout - DHCP issue
Replies: 7
Views: 4408

Re: WiFly GSX Breakout - DHCP issue

Are you able to view the logs on your Access Point to see if it provides an error message and/or indicates that the WiFly has connected? Given that the other odd WiFly behaviour that's been mentioned on the forums recently was apparently solved with a factory reset you might want to try that. --Phi...
by riden
Sat Apr 03, 2010 9:13 am
Forum: SparkFun Site Questions/Comments
Topic: Changes in how "View new posts" work with new BB
Replies: 3
Views: 791

Changes in how "View new posts" work with new BB

In the previous incarnation of the forum, I could click on the "View new posts" link and see only posts that have new posts (i.e., only ones that I have viewed). However, with this version, I am seeing posts that I have seen as well as new unseen posts. Is there a configuration option that I can set...
by riden
Sat Apr 03, 2010 8:57 am
Forum: Wireless/RF
Topic: WiFly GSX Breakout - DHCP issue
Replies: 7
Views: 4408

WiFly GSX Breakout - DHCP issue

I am having difficulties getting a WiFly GSX connected to my wireless network which uses DHCP. I have tried using two different LinkSys WRT-54G routers (one the actual access point using security and another running dd-wrt in open mode) and observe similar results. My connections are RX, TX, GND, an...
by riden
Sat Apr 03, 2010 8:14 am
Forum: SparkFun Product Questions
Topic: programs for infrared sensors
Replies: 9
Views: 1100

Re: programs for infrared sensors

Could you do something where you step up to your device and then do your move? That way the sensor would be reading all the time and when you get at the desired distance for n number of seconds, the measurement begins. Step away and the device disables itself. Otherwise, I go the IR detector route a...
by riden
Fri Apr 02, 2010 10:24 am
Forum: SparkFun Product Questions
Topic: programs for infrared sensors
Replies: 9
Views: 1100

Re: programs for infrared sensors

Leo, The more that I think about it, the more I believe that you will may want to take the ultrasonic sensor approach. My reasoning is that IR sensors work on detecting the amount of reflected light from the transmitter and that can vary widely based on the characteristics of the reflected surface. ...
by riden
Wed Mar 31, 2010 7:01 pm
Forum: SparkFun Site Questions/Comments
Topic: problem with a 32768Hz crystal
Replies: 6
Views: 1960

Re: problem with a 32768Hz crystal

Crystals have specific loading requirements and it looks like your circuit is making the grade for the crystal. Is this a "standard" watch crystal? If so, perhaps the following oscillator might work better: http://www.elecfree.com/electronic/3276 ... h-crystal/
by riden
Wed Mar 31, 2010 6:56 pm
Forum: SparkFun Product Questions
Topic: programs for infrared sensors
Replies: 9
Views: 1100

Re: programs for infrared sensors

Could you give us a little more information? What are the distances involved and what is the nature of the remote activation you need? Your answers will help zero in on approaches. As mentioned before, either a Sharp IR sensor or an ultrasonic sensor should do the trick. These devices usually have a...
by riden
Mon Mar 29, 2010 9:46 pm
Forum: SparkFun Product Questions
Topic: programs for infrared sensors
Replies: 9
Views: 1100

Re: programs for infrared sensors

Depending upon the distances involved, Sharp makes a line of IR sensors that work well with the Arduino. SparkFun carries them (see SEN-08958 and related products). For the code, Google "Arduino Sharp IR".
by riden
Thu Mar 18, 2010 9:09 am
Forum: SparkFun Product Questions
Topic: Older Weller soldering iron won't heat!
Replies: 5
Views: 1267

Re: Older Weller soldering iron won't heat!

Fantastic! If this is the first time this happened, your tip will probably last quite a bit longer, but it is always good to have a spare on hand.