#Android #hardware with a QWERTY keyboard that fits in your pocket and can run Debian, the "Titan Pocket", for US$290
apparently a common #connector for #I²C devices (or maybe an #M5Stack specific one?) is this JST #HY2.0-4P thing (“Grove”?): 2.0 millimeter spacing between 4 pins. #hardware #electronics
another #HY2.0-4P #connector thing for #I²C #electronics #hardware, this one a multiplexer to let you use six devices with the same ID. Sometimes called Grove apparently
#HY2.0-4P #connector mechanical drawing for #I²C #electronics #hardware
The #M5Stack folks have a credit-card-sized computer with a QWERTY keyboard, a tiny 240×135 IPS color LCD screen, an Xtensa ESP32, a MicroSD card slot, an infrared interface, a microphone, Bluetooth, and a #HY2.0-4P connector for their sensors. 84 x 54 x 17mm. #electronics #hardware
The so-called "djb2" hash function is indeed by Dan Bernstein, but it’s from 01991: hash = 5381; while ((c = *s++)) h = (h << 5) + h + c; #hashing #algorithms
discussion from 01991 of #hashing #algorithms on comp.lang.c between Henry Spencer (who says C News could just as well have used strlen() like PHP later did), Chris Torek, Dan Bernstein, Dave Harris, Richard Harter, Rich Salz, Phong Vo, et al. Title “hash function for mac needed”.
a comparison of #hashing #algorithms #performance in 02012
#Economics #statistics for #Argentina, like how our interest rate is 40%
#video of #manufacturing #woodworking tools by #3D-printing: templates for a router, an air guide for a router vacuum cleaner, a T-square with holes at 1-mm increments for drawing parallel to an edge (printing the first layer in a contrasting color), screw pattern guides for particular hinges, a drill guide for putting your Forstner bit the right distance from the edge of a plywood panel, a clamp with a rather oversized screw thread, and a scribing tool for transferring the outline of a wall onto the edge of a board you want to cut. #bootstrapping #scouting