My mechanized coffee grinder
My manual coffee grinder has just been mechanized . Let’s ponder together: is simplicity truly unnecessary, or does it reveal the beauty in the art of coffee preparation?
Category: Making
A hack of the BSidesCBR 2023 conference badge.
This year I attended the BSidesCBR conference again. The conference gave each attendee a badge, which is basically an electronic board with a screen. This version is different from the eink-based one made for BSidesCBR 2021 (I have some posts about the board and there is a post about how I made an NTP clock…
A hack of the BSidesCBR 2021 conference badge – NTP Clock
The article describes a clock developed from an electronic conference badge (which was introduced here). I could make an Internet connected NTP clock that shows time on an epaper screen. Source code The source of this app can be found here.
First 3D printing with Snapmaker 2.0 A350T (=F350 + laser +CNC)
During the Christmas time last year (2021) I bought a 3D printer Snapmaker F350 but could not have time to set it up until last week. My plan is to add the strong laser module of 10W and a CNC module into it, making it more powerful than the original 3 in 1 machine A350T.…
Basic IoT with ESP32 – Fast refresh of epaper displays
This post discusses something about epaper I have been able to learn. How ePaper displays work ePaper (also called eInk) displays use colored particles (also called pigments), some are positively charged and some are negatively charged depending on their colors. For every pixel, ePaper panel can apply either positive or negative voltage to each side…