Larry the optimizer
fast-code-r-us.bsky.social
Larry the optimizer
@fast-code-r-us.bsky.social
I optimize code for a living. I'm also good with bits, bytes and pixels. I have been in this digital world since before the days of 8-bit home computers. See my FOSS projects on https://github.com/bitbank2
The vast majority are wired as GND, VCC, SCL, SDA, but there are a few odd ones. I accidentally fried one that had GND and Vcc swapped :(
November 3, 2025 at 4:39 PM
like this is the shipping/handling/tax. If the product costs much less than these other costs, it's hard to sell them individually.
November 2, 2025 at 6:32 PM
JLCPCB can make them for a good price as long as you choose one type of soldering. The SMD parts need a different soldering vs the 0.1" through hole headers. We chose to manually solder the 0.1" headers. JLC can do both, but the cost goes up quite a bit. The new challenge with selling projects
November 2, 2025 at 6:32 PM
That's the first time I've seen one of my breakout PCBs in the wild. Nice :)

Martin and I are working on a new version that has a 24-pin e-Paper adapter on it too.
November 2, 2025 at 3:50 PM
You may appreciate what I've created for the RPI and Arduino. A complete solution for driving all of these displays with a consistent API and support for interesting use cases:
youtu.be/a92cUrwSxw0

Code is here: github.com/bitbank2/bb_...
RPI Zero GIF on e-Paper
YouTube video by tdfsoftware
youtu.be
November 2, 2025 at 10:52 AM
To honor your newfound youth, change your bsky name to "Mario, that kid from Austria who scraped supermarket prices"

😀
October 31, 2025 at 10:13 AM
It started as an era when computers did nothing unless you wrote your own code to make them do something. Then the internet allowed us to share ideas and code. Then WWW allowed normal humans to use computers. Then came big $. Then things went steadily downhill.
October 30, 2025 at 9:54 AM
Nice. That 8-bit parallel ST7789 should really fly when driven by the RP2350. I added support for old tufty to my bb_spi_lcd display library. The memory and DMA of the RP2040 are fast, but not the integer compute. It bogs down when decoding GIF or any other intensive task
youtu.be/_6C5H8DfnfU
Tufty2040 PIO+DMA with improved perf
YouTube video by Larry Bank
youtu.be
October 29, 2025 at 4:24 PM
How about EWTD (everything Windows touches dies)
October 29, 2025 at 11:33 AM
Is that the original RP2040 Tufty or a newer (RP2350?) one?
October 29, 2025 at 10:38 AM
It has seemed like there's a battle going on within Apple for some time now. The marketing/enshittification people constantly creating awful changes and chaos just to have something "new" each year and the sane engineers trying to keep the product working nicely.
October 29, 2025 at 10:28 AM
Google ATAP was the same. They closed the entire research division and tossed all projects in the bin. Big companies have wanted to do this for a long time. Offshoring to low wage countries isn't good enough in today's fake valuation market. Small/med firms seem to be still doing actual work.
October 5, 2025 at 10:37 AM
I think the most common WiFi problem I've seen is that the access points "run out" of DHCP addresses after a while and need to be restarted. Some memory leak / bad firmware causes this on a range of machines. Last month my apt's electric meter did this and needed a person to come and restart it.
October 5, 2025 at 10:06 AM
There was a profound change starting in Dec 2023. The same managers that thought nothing of hiring tons of engineers only to fire them soon after are now the ones being fired. Tech companies are gleefully firing as many workers as possible to please their AI-enamored shareholders.
October 5, 2025 at 9:56 AM
same
October 5, 2025 at 9:42 AM
Turbo Pascal was a great IDE on early IBM PCs. What stood out was the speed and interactive nature of it on such a constrained (aka wimpy) machine. The lesson I took from it was that SW productivity was sometimes determined more by the tool than the language - I have negative feelings about Pascal.
October 3, 2025 at 11:33 AM
New product idea
October 3, 2025 at 10:36 AM
I'm going to attach a fan to the heatsink after I solder on a 40-pin header.
October 3, 2025 at 10:23 AM