Dillon Kelley's Projects
This website documents the projects I design, build, and program in my free time — air quality monitors, rocket test stands, 3D printed parts, and whatever else is currently on the bench. Browse the collection below.
Portfolio
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Air Quality Monitor Comparison
All three generations of the home air quality monitor compared head to head: pricing, capability, ease of build, and field data.
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Air Quality Monitor V3
The SEN66 all-in-one build — one sensor, one board, and 15 second updates.
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Air Quality Monitor V2
SEN55 and SCD41 on a XIAO ESP32-C6, running ESPHome inside Home Assistant.
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Air Quality Monitor V1
The original build: ESP32-S2, PMSA003I, SGP30, and BME680 streaming over MQTT to Grafana.
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Rocket Test Stand V1
A load cell and HX711 based thrust stand for testing homemade rocket motors.
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Rocket Test Stand V2 WIP
The rebuild: a bigger load cell, live telemetry, and a blast shield.
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Apollo AV-1 Parts
3D printed trigger and shaft replacements for a discontinued underwater scooter.
Old Projects
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Weather Station abandoned
An ESP-NOW weather station with a 3D printed radiation shield and tipping bucket rain gauge.
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Plant Waterer abandoned
A fully automatic plant watering system that will hopefully look nice when complete.
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Mill Tachometer abandoned
A DIY hall effect tachometer for a converted CNC mill in the home shop.