Search found 8 matches
- Wed Mar 28, 2007 3:09 pm
- Forum: General Discussion
- Topic: SCI/RS232 <=> SPI
- Replies: 1
- Views: 1775
SCI/RS232 <=> SPI
Hey guys looking for some input here.... I'm looking for the easiest way to convert rs232/sci to a spi signal. Background: I'm using a microcontroller Motorola s12 series that only has one SCI port that will be used for programming/sending data to a pc. I'm also trying to use the maxbotix sensors th...
- Sun Jan 28, 2007 4:52 pm
- Forum: General Discussion
- Topic: 3.3V and 5V Logic Argh!
- Replies: 4
- Views: 2510
- Sun Jan 28, 2007 3:08 pm
- Forum: General Discussion
- Topic: 3.3V and 5V Logic Argh!
- Replies: 4
- Views: 2510
3.3V and 5V Logic Argh!
Hey guys, maybe a newbie question for some of you but I'm looking for some advice... I'm using a TI DSP microcontroller that uses 3.3V logic and attempting to use the Parallax PING))) sensor. This particular sensor waits for a 10us high logic from the microcontroller and then takes a distance measur...
- Sun May 21, 2006 11:25 am
- Forum: General Discussion
- Topic: How to trigger relay?
- Replies: 10
- Views: 5478
How to trigger relay?
Hey guys, I have been working with microcontrollers and basic stamps lately trying to figure out how to trigger a relay. The problem obviously is that the microcontroller can only supply so much current, where as the relay needs ~70 mA. Now I guess I need a power transistor. I have never worked with...
- Sat May 06, 2006 6:30 pm
- Forum: General Discussion
- Topic: Way to step down voltage to LED.
- Replies: 9
- Views: 4105
- Sat May 06, 2006 5:26 pm
- Forum: General Discussion
- Topic: Way to step down voltage to LED.
- Replies: 9
- Views: 4105
- Sat May 06, 2006 2:43 pm
- Forum: General Discussion
- Topic: Way to step down voltage to LED.
- Replies: 9
- Views: 4105
Way to step down voltage to LED.
Hey All- This is probably a pretty basic question for most of you but here it goes... I'm working on a side project of mine where I need LEDs to indicate if a 12V supply is avilable. The problem is 12V leds are relatively expensive compared to their lower voltage counterparts. What would the cheapes...
- Tue Nov 22, 2005 10:05 am
- Forum: General Discussion
- Topic: PIC-MCP-USB?
- Replies: 4
- Views: 2303
PIC-MCP-USB?
Anyone have any experience with this PIC programmer?
http://www.olimex.com/dev/pic-mcp-usb.html
Any other reccomendations for low cost alternatives to PICStart+?
Thanks
http://www.olimex.com/dev/pic-mcp-usb.html
Any other reccomendations for low cost alternatives to PICStart+?
Thanks