Viewing profile — qooiii2

A lot of touchscreens meet that requirement. Turns out it's often cheaper to solve problems with algorithms than avoid them by design.

I've done a bit of NES programming and really enjoy trying to cram stuff into such a tiny system. One benefit of developing games for these old systems is that they are not moving …

I liked the 32F746GDISCOVERY which is $56 at Digikey. It has a Cortex-M7 CPU, 1 MB built-in flash, 8 MB of SDRAM, and a 480x272-pixel touchscreen. Games can go on a microSD card. T…

I guess it depends on which part you think is fun. Using a big microcontroller is more about pushing the hardware to its limits. Using a small Linux system is about taking advantag…

Something like an STM32 Discovery board is a good option for recapturing the mid-90s magic. You can get a ~200-MHz Cortex-M4 or M7 with a few MB of flash, external SDRAM, and a dis…

I've been bitten by reordering. In my case, the toolchain developers implemented the reordering step in the assembler as an extra optimization step (on by default of course), so I …

It's tough but doable. You have to get on people's calendars a week or two out whenever you can, and if you're lucky, it eventually turns into easy, low-stress, open-ended playdate…

A company I worked at had one of the guys behind the TrackPoint come in and give a technical talk once. He was great, absolutely obsessed with building a great user experience. The…

I interned at Sandia Livermore and Los Alamos in college, then worked at Sandia's main site for a few years before moving out to the Bay Area to work in the more dynamic world of c…

If you can afford it, do it! The worst that can happen is you'll just get another job. I quit a job about 15 years ago with no plans and enough money to last me a year or two. It t…

Google asked if I would do a phone screen a few years ago for an SRE position, and I thought that process was hilarious. In my case the questions had nothing to do with my backgrou…

Under those constraints, Chebyshev approximation will probably outperform minimax. Minimax approximations have non-zero error at the endpoints, so they wouldn't quite hit zero at s…

You can do a little better with a minimax polynomial that you can derive with the Remez algorithm. If you have Matlab, you can use the excellent Chebfun package's remez command to …