Projects

Key Features

• See exactly what your USB-C charger and device are negotiating
• Set any voltage from 3.3V to 21V with 20mV precision
• Monitor current and power draw in real-time via WiFi or BLE
• Open-source firmware—customize everything

About

Spark Analyzer is an open-source USB-C PD analyzer and programmable power supply built on the ESP32-C3. Whether you're testing power delivery negotiations, need a portable bench supply, or want to add USB-C PD to your own project, Spark Analyzer handles it all. Control voltage from 3.3V to 21V with 20mV precision via WiFi or BLE. Monitor real-time current draw. Log power consumption over time. The open-source design means full transparency—inspect the schematic, modify the firmware, or manufacture your own. Perfect for USB-C product development, portable test equipment, power-hungry project prototyping, and learning USB-C Power Delivery.

Key Features

• 30+ days battery life from a CR2450 coin cell
• 6-axis IMU with motion-triggered wake-up
• Compact enough to embed in any wearable
• Ready for TinyML deployment

About

Tracer solves the hardest problem in wearable sensing: battery life. Running for 30+ days on a CR2450 coin cell, it combines a high-sensitivity 6-axis IMU with sophisticated power management. The device enters deep sleep between motion events and features adaptive reporting based on activity. Whether you're building a step counter, gesture controller, or sports tracker, Tracer's compact form factor and open-source design make it the ideal starting point.

Key Features

• No batteries to change—runs forever on solar
• Corrosion-resistant capacitive sensor outlasts cheap probes
• WiFi alerts when your plants need attention
• Built-in pump driver for fully automated watering

About

Plant-Bot runs forever on solar power while keeping your plants alive. The corrosion-resistant capacitive sensor outlasts cheap resistive probes, while WiFi alerts notify you when soil moisture drops below your threshold. Set up automated watering with the built-in 5V pump driver and forget about it. Temperature and humidity monitoring (AHT20) gives you the complete picture of your plant's environment. Perfect for gardens, greenhouses, or anyone who's ever forgotten to water their houseplants.

About

FLORA is a long-range ESP32-based garden weather station created in response to Europe's severe drought in 2022. It features a LoRa module allowing communication up to 1 mile away, making it ideal for remote gardens or allotments. The system includes a high-precision SHT20 temperature and humidity sensor and multiple ports for capacitive soil moisture sensors. Powered entirely by a solar panel and rechargeable battery, FLORA continuously monitors environmental conditions and soil moisture levels, helping users make informed decisions about irrigation to conserve water. Data can be transmitted via LoRa, ESP-NOW, WiFi, or Bluetooth, and integrated with platforms like ThingSpeak for comprehensive analysis and visualization.

About

DS-Pi is an open-source RP2040-based audio digital signal processing platform that leverages the low-cost and accessible Raspberry Pi RP2040 microcontroller and pairs it with the powerful TLV320AIC3254 audio codec from Texas Instruments. The board features a programmable miniDSP, on-board MAX97220 headphone amplifier, 3.5mm connectors for inputs and outputs, and screw terminals for rapid prototyping. Compatible with Arduino, Micropython, and CircuitPython, DS-Pi makes audio signal processing accessible to all levels of tinkerers. Primary applications include guitar effects processing, customizable amp modeling for bedroom guitarists, and general audio signal manipulation. The dual-core M0s on the RP2040 provide sufficient processing power for complex audio processing algorithms.