Roboto Drill Template
PedalPCB · 125B
Template details
- Circuit
- Roboto
- Vendor
- PedalPCB
- Enclosure
- Hammond 125B
- Dimensions
- 63.6 × 119.3 × 35.8 mm
- Layout
- 125B 3-Knob (Type 1)
- Category
- Guitar effect
Export formats
- PDF: print at 1:1 scale
- SVG: vector graphic
About this drill template
Drill template for the PedalPCB Roboto, sized for a Hammond 125B enclosure (63.6 × 119.3 × 35.8 mm). The pre-positioned holes match the PCB's pot footprint exactly, with the footswitch centred below the 3-knob layout. Print at 1:1 scale, tape to the enclosure face, centre-punch, and drill. PCB and parts not included.
PedalPCB description: “Compare to Death By Audio Robot”
Build notes
Three-knob layouts give you the full gain / EQ / volume triplet without crowding the enclosure. There's room inside for the PCB, jacks, and a 9V supply.
The Hammond 125B is one of the most common DIY pedal enclosures: a touch larger than a 1590B, slightly smaller than a 1590BB, with room for almost any single-effect PCB plus 9V supply.
Vendor specs: Designed for a 125B enclosure with top-mounted jacks
Controls
- Volume: Controls the output volume
- Control: Controls the pitch offset in NORMAL, UP, and DOWN modes. In ARPEGGIO mode it controls the rate of arpeggiation.
- Mode (Rotary switch): Selects between NORMAL, UP, DOWN, and ARPEGGIO modes.
Drill measurements
Hole centres for the 125B 3-Knob (Type 1) layout. X runs left to right from the centre of the face being drilled. On the enclosure face, Y is measured from the centre, positive towards the top. For holes on a side, Y is the distance down the wall, measured from the face edge. Export the PDF for a 1:1 printable version with a scale check.
| Hole | Face | X (mm) | Y (mm) | Diameter |
|---|---|---|---|---|
| LED | Enclosure face | 0 | 38.1 | 6.4 mm (0.25 in) |
| Pot | Enclosure face | -16.5 | 38.1 | 7 mm (0.28 in) |
| Pot | Enclosure face | 16.5 | 38.1 | 7 mm (0.28 in) |
| Pot | Enclosure face | 0 | 12.7 | 7 mm (0.28 in) |
| Footswitch | Enclosure face | 0 | -45 | 12 mm (0.47 in) |
| DC Jack | Top side | 0 | 14.2 | 8 mm (0.31 in) |
| Jack | Top side | -15.2 | 24.3 | 9.5 mm (0.37 in) |
| Jack | Top side | 15.3 | 24.3 | 9.5 mm (0.37 in) |
Jig A covers 125B 3-Knob (Type 1)
Drop it over the enclosure, punch a mark through the holes this build uses, then lift it off and drill. It wraps onto the sides too, so the jacks and DC socket are covered.
Both jigs, $12 →