cvonk

OPNpool

Integrates the functionality of a Pentair pool controller into the smart home using ESP32 SoC.

arduino-SSD1322

Arduino library for 256x64 OLED ER-OLED032-1 (SSD1322 driver)

FPGA_SPI

Connecting FPGA and Arduino using SPI.

ESP32_factory-ble-prov

Reusable ESP-IDF component to simplify provisioning using BLE.

BLEscan

ESP32 code to advertise as BLE iBeacon, or scan for iBeacon advertisements and reports them using MQTT. Used for research in COVID-19 contact tracing.

FPGAmath

Verilog HDL implementations of adders/subtractor, multiplier, divider and square root. As well as HTML simulations.

ESP32_coredump-to-server

Reusable ESP-IDF component: Forward core dumps on deployed ESP32 devices.

hp41-focal

HP-41 calculator focal programs for math operations.

arduino-rotary_encoder

Driver for Rotary Encoder on Arduino 101 (and other boards with sufficient IRQs).

CALalarm

ESP32 OLED alarm clock that syncs with Google Calendar.

ESP32_factory-reset-task

Reusable ESP-IDF component: RTOS task to honor factory reset button for ESP32.

ESP32_wifi-connect

Reusable ESP-IDF module for reliable Wi-Fi connect (and if necessary reconnect)

esp8266-fatal

Saves exception details and stack trace anytime the ESP8266 crashes.

gas-sheets-merge

Combines the information from two Google Sheets.

aioeagle

Python library to control the EAGLE-200

arduino-infrared_silverlit

Arduino library for encoding and decoding infrared remote signals.

CALclock

Shows Google Calendar events on a LED circle incorporated in a clock faceplate.

ESP32_ota-update-task

Reusable ESP-IDF component: RTOS task to pull over-the-air updates for ESP32.

gas-sheets-project_role_alloc

Create project role allocation pivot table based on projects names, users and their roles.

gedcom.js

Gedcom parser for JavaScript.

nodejs-wikitree_biography

Imports a GEDCOM to write biographies, and helps you in applying them to corresponding WikiTree profiles.

OPNpool_provisioning

Android provisioning app for OPNpool.

py-eagle-mqtt

Python based Docker for Eagle to MQTT reader

MIDImike

MIDI Microphone, recognizes notes played and sends them as MIDI events.

cvonk.github.io

Excel_pediatric_growth_curves

Calculates percentile of pediatric growth (length, weight, head, etc.) and shows the graphs for various P values. For Excel with simple macros.

MSGEQ7_8x8matrix

Spectrum analyzer display using MSGEQ7, 8x8 bicolor matrix and Arduino Uno.

pact-johan

PACT Data Ecosystem using MQTT

Snapshot_backup

Uses "snapshot"-style backups with hard links to create the illusion of multiple, full backups without much of the space or processing overhead.

wordpress

Heavily customized 2017 theme