The Particle V1 replacement knobs are available from Mouser, eBay, and other sources. The knob has a set screw and 6.4mm (0.25") shaft hole.
| Knob | Diameter | SCI Part # | Alt Part # | Mouser Part # |
| Large (mode switch) | 20 mm (0.77") | PN-8E | PN-38C | Eagle 450-2035-GRX |
| Small (potentiometers) | 15 mm (0.59") | PN-8F | PN-38D | Eagle 450-2034-GRX |