There are 14 repositories under vhotsmcomp topic.
DIY ROS mobile robot
The goal of this project is to use scanning lidar to create a map which will enable autonomous navigation of a simple robot
A simple robot car based on RP Pico and MicroPython
PCB to create an all-in-one AC wall wart + project
Whole house water leak detection and water shutoff system. Requires a supervisory computer for full functionality. Communications is via MQTT.
MQ-135 Air Quality Sensor Board CO2 Calibration
Yang's Home Assistant yaml files under HassOS
Cellular IoT project enables remote sensor monitoring without internet service
The ATTiny software running on a Disconnector1 circuit board for auto-starting a UPS after a lightning shutdown.
Home Assistant - Watermain Adaptive Threshold provides quick leak detection without using impeller
Temperature measurement on Pi Pico using AHT20 with MicroPython
Monitors MQTT transmissions - lets you know if any sensors (or MQTT clients) have disappeared.
External Tuning Knob/Buttons for the Elecraft KX3/KX2 transceiver
Automates garage door management
Notify via MQTT when a package arrives in the delivery box
Notify via LoRa when a package arrives in the delivery box
A simple program to test the RYLR998 LoRa transceiver with an ESP8266
Distance Sensor / Remote Monitor
Solar powered Tricycle rover follows waypoints
TeleOperation of PicoBot using Bluetooth (BLE) communication between two Pico-W devices
PicoBot TeleOperation using a pair of HC-05 / HC-06 BT modules