- Tue Apr 26, 2005 8:09 am
#4495
Here's an interesting project we've been kicking around. We'd like to get feedback:
The SerAccel pulls power off the RS232 DTR and RTS lines. Works great. We can get 10-20mA which is enough to run very small boards.
We've developed the bootloader that runs very well on the 16F88 at 20MHz.
Finally, over the weekend I decided to take the Shifter Board surface mount and see how small I could make it. Well, it's tiny.
This mini 18-pin dev board needs no programmer, needs no external power, and has 12 general I/O as well as a full RS232 connection for communication.
We're not sure what we could do with 20mA off the RS232 port power, but it makes for a small board with a lot of functionality.
Schematic : http://www.sparkfun.com/tutorial/PCB/De ... ematic.pdf
Ideas? Applications?
-Nathan
The SerAccel pulls power off the RS232 DTR and RTS lines. Works great. We can get 10-20mA which is enough to run very small boards.
We've developed the bootloader that runs very well on the 16F88 at 20MHz.
Finally, over the weekend I decided to take the Shifter Board surface mount and see how small I could make it. Well, it's tiny.
This mini 18-pin dev board needs no programmer, needs no external power, and has 12 general I/O as well as a full RS232 connection for communication.
We're not sure what we could do with 20mA off the RS232 port power, but it makes for a small board with a lot of functionality.
Schematic : http://www.sparkfun.com/tutorial/PCB/De ... ematic.pdf
Ideas? Applications?
-Nathan
