Before Assembly¶
Review this section before purchasing components. Make sure all required parts and tools are available.
Electrical safety
The device operates at 110–230 V. Read the Safety section before starting work.
CAD models¶
Print the enclosure before starting assembly. Models and print parameters: CAD.
Enclosure material: ABS, ABS-CF, ABS-GF, PC, or HTPLA. Do not use PLA or PETG — they will not withstand operating temperatures.
Bill of materials for one unit¶
Electronics and components¶
| Component | Qty | Notes |
|---|---|---|
| iDryer Unit MCU board | 1 | Main unit; each additional unit requires an EXT board |
| PTC heater 110–230 V, 100 W | 1 | |
| Fan | 1 | For air circulation |
| NTC 100K temperature sensor | 1 | Or any sensor supported by Klipper / Standalone |
| SHT3X temperature and humidity sensor | 1 | Or any I2C sensor supported by firmware |
| Thermal Protector KSD9700 (130 °C) | 1 | Or single-use Thermal Fuse RH130 |
| Servo for damper | 1 | 3.7 g or 9 g (see CAD section) |
| RJ45 patch cable | one per EXT unit | Standard Cat5e or higher |
Hardware and connectors¶
| Item | Notes |
|---|---|
| Terminal connectors | Per board schematic |
| Ferrule terminals | For crimping heater wires |
| Heat shrink tubing | For insulating connections |
Software¶
Decide on the operating mode before assembly — it determines the firmware:
- Klipper — requires a printer with Klipper installed.
- Standalone — operates without a printer, control via display and/or portal.
See About the project for details.
Tools¶
- RJ45 crimping tool
- Ferrule crimping pliers
- Soldering iron (if needed)
- Multimeter for connection testing
- Screwdriver and wrenches matching fastener sizes
Recommendation¶
Assemble the system on a bench without mounting in the enclosure and run initial tests:
- Connect the heater, fan, sensors, and servo to the board.
- Load the firmware and verify correct operation of each component.
- Only after a successful test, mount the components in the enclosure.
Shorten sensor and power wires to the minimum required length during final assembly.