Posted by Jim Morris on Sun Mar 23 08:16:32 -0700 2025
My little project this week was to try to a get bare metal RISC-V assembler coded GPIO twiddler working on a pi pico2. (Actually PICO2-W)
With little to no useful help from chatgpt 4o, I finally managed to get something working although it appears a regular daplink probe is a little flaky with the pico and openocd, maybe a pi pico programmed with daplink would be better?
... Show more ...Posted by Jim Morris on Thu Aug 30 09:35:20 -0700 2018
I have tried the various techniques for creating PCBs on a laser cutter (both a 3w led and K40 CO2). The issue was the paint would leave a residue on the PCB after being lasered, and removing it proved to be hard to impossible. Using the toothbrush approach it didn't touch it, and using IPA it took off the thinner traces too.
So I came up with an alternative.
... Show more ...Posted by Jim Morris on Sun Dec 16 16:47:33 -0800 2012
UPDATE the project is currently hosted on Github
... Show more ...Posted by Jim Morris on Mon Dec 03 02:26:22 -0800 2012
Having some time on my hands I have taken up several hobbies. One is 3D printing, and the other is restarting my robot hobby.
The 3D printing is a whole other story, and I'll probably blog about my adventures in modifying and building a Delta printer soon.
... Show more ...Posted by Jim Morris on Tue Feb 21 16:36:46 -0800 2012
I really wanted to share this one as it is so cool.
I have been writing some database GUI admin tools using Groovy and I use SwingBuilder to build the UI as it tends to be easier than using Swing directly.
... Show more ...Posted by Jim Morris on Wed Nov 23 00:08:34 -0800 2011
I decided to use Googles Protocol Buffers for a new server. I have been writing custom binary protocols for over 15 years for my various servers, as well as using XML and JSON on occasions.
I prefer binary protocols as they tend to be lean and mean when it comes to bandwidth.
... Show more ...Posted by Jim Morris on Sat Nov 12 01:36:29 -0800 2011
Or how to get Rails 3.1.1 assets in vendor/assets to work in
production.
Posted by Jim Morris on Sat Dec 18 01:04:06 -0800 2010
This one does not seem to be documented, and I just got bit.
After porting my
blog engine to Rails
3, I noticed that after a while comments were being rejected with an
ActionController::InvalidAuthenticityToken error.
Posted by Jim Morris on Fri Dec 17 15:27:17 -0800 2010
After porting my blog engine from Merb to Rails3 code here I thought I'd upgrade my Snow Dogs R Us Site (aka dogz.us) to Rails 3.
It was written in Rails 2.2.2 so I figured it would not be too hard, well it was easier to port my Merb App than it was my Rails app!
... Show more ...Posted by Jim Morris on Mon Nov 29 23:06:57 -0800 2010
I needed to upgrade a remote server that was running Dapper to Lucid, as Dapper is no longer supported (or will soon be EOL'd). This server uses a software RAID 1, and that seems to be the problem.
I tried to do this over the network via ssh in a screen, however after it upgraded to Hardy it failed to boot.
... Show more ...
