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Since I no longer have public IPv4 assigned to my modem/router and no way to enable modem/bridge mode I use VPS to terminate incoming traffic for HTTP and VPN-in. Type: VPS vps2020-starter-1-2-20 (1 vcore, 2 GiB RAM, 20 GB HDD) Location: London os-uk2 O...

Kirchhoff's series: I const, V divider parallel : I divider, V const Ohm's V = IR I = V/R R = V/I Power P = IV Reactance / Inductance Xc = 1/(2πfC) Xl = 2πfL Z = sqrt(R**2 + X**2)

ESP32: esp32_technical_reference_manual_en_0.pdf Configuration Configuration can be reset using UART (e to reset configuration). In my case the display would turn off after initial loading screen. This can be fixed by configuring "OLED Bright" configurati...

TinyGS intro: https://youtu.be/6Q5DRqxdOaY?t=629 Board: Lilygo LORA32 Build instructions: Build-Your-Own-Satellite-Ground-Station-TinyGS-compressed.pdf GroundStation Name: HxD https://tinygs.com/station/HxD@7641588744 http://192.168.80.155/ Zab...

Specs Dual core Arm Cortex M0+ 133 MHz 264kB multi-bank high performance SRAM 2MiB external flash Datasheet: pico-datasheet.pdf Pinout VBUS 40 - micro-USB input voltage, connected to micro-USB port pin 1. This is nominally 5V (or 0V if the USB is n...

This is a remix of https://www.thingiverse.com/thing:5182572/files but with better fitting inserts (Part 2): FreeCAD project: Paper Towel Holder - Custom.FCStd STL: Paper Towel Holder - Custom-Body.stl

Pinout 5V - comes form USB-C VBUS and/or output of the regulator (VIN); MCU has operating voltage of 1.8 - 5.5V VIN - goes to the regulator and can be maximum 15 V; minimum 5 + ~1.1 (dropout) for regulator to regulate; MCU should run with 2.9 V 3V3 - ou...

e A register level TMS0805 CPU emulator on an Arduino Nano runs the original 320 instruction calculator program. A custom PCB houses it all. Resources Reversing Sinclair's amazing 1974 calculator hack Now Texas Instruments offered him an inexpensiv...

FreeCAD: Skrew box wall mount.FCStd STL: Skrew box wall mount-Body.stl

/etc/udev/rules.d/bj68.rules SUBSYSTEM!="usb|usb_device", ACTION!="add", GOTO="tablet_bj68_rules_end" # MediaTek BJ68 ATTRS{idVendor}=="0e8d", ATTRS{idProduct}=="201d", SYMLINK+="tablet-%k", MODE="660", GROUP="adbusers" LABEL="tablet_bj68_rules_end" ...

gpg --expert --full-gen-key # press 9 (ECC and ECC) # press 1 (Cureve 25519) # press 0 (not expire) # export gpg --list-public-keys gpg --export --armour <key_id> > pubkey.pem # import gpg --import pubkey.pem gpg --edit-key <key_id> trust # en...

Resources Manual: optiplex-7050-desktop-micro-owners-manual-en-us.pdf Hardware Model: Dell OptiPlex 7050 micro CPU: Intel Core i7-6700T (QC/8MB/8T/2.8GHz/35W) RAM: 16GB Disk: 2 TB SSD CPU Installed: Intel Core i7-6700T (QC/8MB/8T/2.8GHz/35W) ...

A newly revived philosophy for publishing personal knowledge on the web https://maggieappleton.com/garden-history/

Axially aligned bounding box (AABB) Closest Point in an AABB https://gamemath.com/book/geomtests.html#closest_point_aabb if (x < minX) { x = minX; } else if (x > maxX) { x = maxX; } if (y < minY) { y = minY; } else if (y > maxY) { ...

Filament_holder.FCStd Filament_holder-Body.stl Filament_holder-Body.3mf

Resources Manual: CASIO FX-700P.pdf Games: Cassio - Collection og games.pdf Usage Writing programs Enter write mode: MODE, 1 Select program S, 0 to 9 Enter program lines: <line no> <command> <args>, EXEC LIST to list the program (follow by line...

Kit number: 942527 RC2014 Mini II Picasso RC2014 Mini II (of which Picasso is a PCB variant) Schematic  A DS1233+5 will also keep the Z80 in reset state on power-on until the voltages have stabilised, meaning the Z80 should always boot cleanl...

Resources CamelForth Z80 On RC2014 Picasso (Minit II) ROM it is available in 8 KiB Bank 8 (JP: 0001). Port of Brad Rodriguez' Z80 CamelForth to the RC2014 Forth Tutorials Forth_Primer Forth overview Some Fort implementations like gforth are case-insensit...