Lup Yuen Lee 李立源 @lupyuen@qoto.org

Ferrofluid Display gets new, better driver circuitry (PWM)

https://hackaday.com/2021/08/26/ferrofluid-display-gets-new-better-driver-circuitry/

Twelve-year-old boy makes £290,000 from whale NFTs

https://www.bbc.com/news/technology-58343062

"Getting GPLv2 Compliance From A Chinese Company - In Person!"

https://youtu.be/Vj04MKykmnQ

#PineTime: steps counter accuracy

https://www.ncartron.org/pinetime-steps-counter-accuracy.html

Since our #ST7789 Display doesn't respond to GFX Library 9-Bit Banging ... Maybe our display isn't hardwired for 3-Wire 9-Bit mode? Let's verify IM0 to 3 with the display maker

https://www.rhydolabz.com/documents/33/ST7789.pdf

This Week in #RustLang

https://this-week-in-rust.org/blog/2021/08/25/this-week-in-rust-405/

Disabled Logging in #BL604 GFX Library ... SPI Clock looks cleaner now ... But still nothing on #ST7789 Display 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789_bitbang/pinedio_st7789_bitbang/demo.c

#BL604 GFX Library is indeed Bit-Banging 9-bit data to #ST7789 ... But #PineDio Stack Display is still blank 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789_bitbang/pinedio_st7789_bitbang/demo.c

We run the GFX Library on Linux ... To see the data that will be transmitted to #ST7789 Display

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789_bitbang/test/test.c

"The module, apparently, itself could not believe that it had already docked, so when the control system of the module was [reinitialized], the control system decided that it was still in free flight ... an algorithm was triggered, turning on the motors"

https://spectrum.ieee.org/naukas-troubled-flight-t

High Performance Correctly Rounded Math Libraries for 32-bit Floating Point Representations

https://blog.sigplan.org/2021/08/26/high-performance-correctly-rounded-math-libraries-for-32-bit-floating-point-representations/

Writing a simple JSON library from scratch: a tour through modern C++

https://notes.eatonphil.com/writing-a-simple-json-library-in-modern-cpp.html

#PineTime "is my first smart watch, and I'm very glad that it's powered by open source, 😊"

https://www.reddit.com/r/PINE64official/comments/pbrag6/my_wife_and_i_both_got_our_pinetime_watches_in/?utm_medium=android_app&utm_source=share

Let's port moononournation's awesome 9-bit-banging GFX Library to #BL604 ... And compare the SPI Output with a Logic Analyser

https://github.com/moononournation/Arduino_GFX

Need to verify that our #ST7789 Display is hardwired for "3-line 9bit serial I/F Ⅱ" mode: IM0 = 1, IM1 = 0, IM2 = 1, IM3 = 1 🤔

https://www.rhydolabz.com/documents/33/ST7789.pdf