Sparky is the Ender 3 Pro I bought in 2019. It has printed parts for much of the work on this site. I keep upgrading the same machine because each change leaves me with a printer I understand better.
Control
- Klipper and MainsailOS on a Raspberry Pi 4B
- Tailscale remote access
- Creality 4.2.7 controller board
- Logitech camera aimed at the build plate
Motion and toolhead
- X- and Y-axis linear rails
- X- and Y-axis belt tensioners salvaged from an Ender 3 V2
- Low-profile KevinAkaSam dual-belted-Z conversion (with V-rollers)
- Creality Sprite Pro direct-drive all-metal hot end
- Taurus V5 part cooling with two 24 V 5015 blowers
Bed and cooling
- PEI build surface
- CR Touch bed probe
- Creality silicone bed spacers
- Noctua hot-end, mainboard and power-supply fans
- Printed PSU fan face and offset mount, keeping it vertical and clear of the frame
- Upgrade parts printed in white PETG
Calibration
- Two ADXL345s stay mounted: one on the Sprite Pro, one on the bed
- One SPI lead moves between them for X/Y resonance tests, then comes off before printing
- Input shaping comes from accelerometer sweeps; pressure advance from calibration prints
