X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=blobdiff_plain;f=homeshop%2Fcncfpga%2Findex.mdwn;h=09832ca742d135407d979da8098711a26cebd253;hp=edaf47f26adab9565ec9511a27262c989d7de30c;hb=HEAD;hpb=6232b6dfedebcd9b93b42a72a5ccfc5fb8255b5c
diff --git a/homeshop/cncfpga/index.mdwn b/homeshop/cncfpga/index.mdwn
index edaf47f..09832ca 100644
--- a/homeshop/cncfpga/index.mdwn
+++ b/homeshop/cncfpga/index.mdwn
@@ -7,6 +7,15 @@ I converted to servo-based CNC operation. It is compatible with the
[Pluto-P](http://www.knjn.com/FPGA-Parallel.html)
[servo driver](http://linuxcnc.org/docs/html/drivers_pluto_p.html) in EMC2.
+These are photos of the first prototype raw boards:
+
+ 
+ 
+
+And here's a photo of one of them loaded:
+
+ 
+
## Features ##
### User View ###
@@ -17,13 +26,15 @@ I converted to servo-based CNC operation. It is compatible with the
* 9-pin female D-shell connector for misc signals
* barrel connector for 9-12 volt DC power input
* dual-color LED, green when PC heartbeat present, red when not
-* 5.1 x 2.0 inch 4-layer board
+* green LEDs on each of the three power supply rails
+* RC low-pass filtering on all input pins
+* 5.1 x 2.5 inch 4-layer board, fits in Hammond 1590P1 die-cast aluminum box
### Developer View ###
* Hardware Features
* [Altera](http://altera.com) ACEX EP1K10TC100 FPGA
- * [Microchip PIC12F629](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010113) for heartbeat detector
+ * [Atmel ATtiny10](http://www.atmel.com/dyn/products/product_card.asp?part_id=4558) for heartbeat detector
* Tools Used
* [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
* Licenses
@@ -34,7 +45,23 @@ I converted to servo-based CNC operation. It is compatible with the
The design files can be found on [git.gag.com](http://git.gag.com) in the
project [hw/cncfpga](http://git.gag.com/?p=hw/cncfpga;a=summary).
+## Issues ##
+
+Notes about things learned or observed during debugging:
+
+* The RC networks for the input pins are closer to the stacked 15-pin
+ connectors than I'm really comfortable with. Nothing is making contact or
+ shorting, but I'd be tempted to increase the spacing on a future board cut.
+* The SMT 330uF cap is kind of a pain, and doesn't seem all that mechanically
+ solid after reflow. Switch this for a through-hole part in the future?
+
## Future Plans ##
-As of November 2011, a first pass design is complete but no prototypes have
-been built yet.
+As of late December 2011, the first prototype v0.1 board has been loaded and
+is being debugged and tested. If the board "works for me", then I'm likely
+to make enough of these to sell to others who are interested.
+
+Unfortunately, in June of 2013, our house fell victim to the
+[Black Forest Fire](http://www.gag.com/blackforestfire.html). The
+prototypes of this board were lost, along with everything else. I do not
+know if or when I might ever get back to this...
+
+And here's a photo of one of them loaded:
+
+ 
+
## Features ##
### User View ###
@@ -17,13 +26,15 @@ I converted to servo-based CNC operation. It is compatible with the
* 9-pin female D-shell connector for misc signals
* barrel connector for 9-12 volt DC power input
* dual-color LED, green when PC heartbeat present, red when not
-* 5.1 x 2.0 inch 4-layer board
+* green LEDs on each of the three power supply rails
+* RC low-pass filtering on all input pins
+* 5.1 x 2.5 inch 4-layer board, fits in Hammond 1590P1 die-cast aluminum box
### Developer View ###
* Hardware Features
* [Altera](http://altera.com) ACEX EP1K10TC100 FPGA
- * [Microchip PIC12F629](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010113) for heartbeat detector
+ * [Atmel ATtiny10](http://www.atmel.com/dyn/products/product_card.asp?part_id=4558) for heartbeat detector
* Tools Used
* [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
* Licenses
@@ -34,7 +45,23 @@ I converted to servo-based CNC operation. It is compatible with the
The design files can be found on [git.gag.com](http://git.gag.com) in the
project [hw/cncfpga](http://git.gag.com/?p=hw/cncfpga;a=summary).
+## Issues ##
+
+Notes about things learned or observed during debugging:
+
+* The RC networks for the input pins are closer to the stacked 15-pin
+ connectors than I'm really comfortable with. Nothing is making contact or
+ shorting, but I'd be tempted to increase the spacing on a future board cut.
+* The SMT 330uF cap is kind of a pain, and doesn't seem all that mechanically
+ solid after reflow. Switch this for a through-hole part in the future?
+
## Future Plans ##
-As of November 2011, a first pass design is complete but no prototypes have
-been built yet.
+As of late December 2011, the first prototype v0.1 board has been loaded and
+is being debugged and tested. If the board "works for me", then I'm likely
+to make enough of these to sell to others who are interested.
+
+Unfortunately, in June of 2013, our house fell victim to the
+[Black Forest Fire](http://www.gag.com/blackforestfire.html). The
+prototypes of this board were lost, along with everything else. I do not
+know if or when I might ever get back to this...