Specs

Full hardware specs and a detailed breakdown of every module type.

Box specs

SIMINPUT enclosure with empty module slots

Enclosure

Dimensions
16.5 × 12.5 × 4 cm
Module Slots
6 slots, 3 × 6 cm
Material
3D-printed matte PETG
Rear Mounting
4× M3 screws
Mounting Plates
Side or Top/Bottom
Table Clamp
Horizontal or vertical

Electronics

Microcontroller
RP2040
Connection
USB-C (device) to USB-A (PC)
Digital Inputs
38 independent
Analog Inputs
4
Backlighting
8 × 25 lm LEDs
Connectors
JST 1.25mm 2p
Custom RP2040 PCB

Mounting options

Table Clamp

Clamps to the edge of your desk. Works with tables up to 44 mm thick and needs a flat, unobstructed section at least 30 mm deep (40 mm ideal). Orientation matches your configurator choice.

Max table thickness
44 mm
Required flat depth
30 mm min · 40 mm ideal
Orientation
Horizontal or vertical
Table clampTable clamp from aboveTable clamp on desk

Mounting Plates

Bolt to the back of the box and attach to any flat surface or rig. Each plate has an elongated slot. The slot range is how far your screw centre can travel with an 8 mm screw filling the full slot width. Smaller screws with appropriately sized washers give you even more range. The second measurement is the distance between the two opposing plates, so it is the span your rig has to cover. Two sizes: large plates run along the long sides of the box, small along the short sides.

Slot width
8 mm
Large plates
128 mm slot range · 149 mm between plates
Small plates
90 mm slot range · 189 mm between plates
Long mounting plate with measurementsSmall mounting plate with measurements

Custom mounting

Both accessories bolt to the four M3-threaded inserts on the back of the box, with 150 × 110 mm spacing, 8 mm deep. You can use these directly for any custom bracket or arm. The box can also be front-mounted with four M3 threaded inserts on the top face with the same 150 × 110 mm spacing.

Every module type in detail

Six module types. Each one is 3×6 cm and designed to snap cleanly into any compatible slot.

Rotary Switch

Rotary Switch

€5 / €6 assembledkit €3

A multi-position rotary switch that clicks between discrete positions. The single-slot version has 5 positions and fits in one slot. The two-slot version has 8 positions and spans two adjacent slots.

Single-slot (€5)
5-position switch
Two-slot (€6)
8-position switch, spans 2 slots
Labels
One per position
Gear / Hook Lever

Gear / Hook Lever

€6 assembledkit €2

A physical lever with a gear or hook shaped knob. The top position locks with a detent requiring a pull to release. The lever detects when it is between positions. Vertical slots only.

Positions
3 (up / middle / down)
Shape
Gear knob / Hook knob
Labels
None
Key Module

Key Module

€4 assembledkit €2

Three mechanical square keys side by side. Momentary action, so you press and release. Smooth travel with a clear stop at the bottom.

Buttons
3 mechanical square keys
Action
Momentary, smooth travel, clear stop
Labels
One per button, not backlit
Guarded Switch

Guarded Switch

€6 assembledkit €4

A toggle switch under a red hinged flip cover. You have to lift the cover before flipping the switch, so accidental activation is impossible. Vertical slots only.

Cover
Red flip cover, hinged
Switch type
2-way toggle
Labels
One at top, one per position
Cover Module

Cover Module

€1

A flat 3D-printed cover for any slot you don't want to fill with a control.

Purpose
Fills unused slots
Dual-Position Module

Dual-Position Module

€6 assembledkit €4

Two completely independent positions per module, each configurable as a different control type. Each position can be a switch, a rotary encoder, or a tactile button. The encoder is available with either a large or small knob.

Per position
Switch, encoder, or button
Switch modes
2-way · 3-way · 3-way momentary · 3-way partial momentary
Labels
4 per position (top + 3 states)
Reference images
Switch
Switch
Encoder
Encoder
Button
Button

To see what these modules cost together, place them in the configurator; the total updates as you build.

Want to go deeper than specs? The documentation explains how the PCB, firmware, and modules work, and walks through the whole kit build step by step, so you can see exactly what you would be doing and how difficult it is.