iHeater Controller Board: Active Chamber Heating for 3D Printers
The iHeater controller board is a compact and universal solution for adding active chamber heating to enclosed FDM 3D printers. It helps maintain stable temperatures when printing with engineering-grade filaments. This board can be integrated into your setup using Klipper firmware or run independently in standalone mode with custom firmware. for adding active chamber heating to enclosed FDM 3D printers. It helps maintain stable temperatures when printing with engineering-grade filaments.
The kit is compatible with Klipper firmware or can run in standalone mode with custom firmware.
⚠️ Please note: This product includes only the control board. Heating element, fan, thermistors, and other components must be purchased separately.** This kit includes only the iHeater control board. All other components listed below must be purchased separately.
What You’ll Need to Build Your iHeater System (Not Included):
- iHeater controller based on STM32F042 — the brain of the system, pre-flashed and ready to go.
- PTC heating element (220V, 100W) — safe, stable, and self-regulating heat source.
- 7530 fan (220V) — ensures steady air circulation inside the chamber.
- 2x NTC thermistors (3950, 100K) — for precise temperature monitoring of the heater and the enclosure.
Operating Modes
With Klipper
- Supports standard G-code commands:
M141,M191 - Full PID control for stable heating
- Fan activation logic upon reaching target temperature
verify_heatersafety checks- Easy integration into your
printer.cfg
Standalone Mode
- No Klipper or host required
- Temperature is adjusted via a physical MODE button
- Current preset is displayed via three indicator LEDs
- Ideal for simple, offline operation
Hardware Platform
- Based on STM32F042 — a reliable 32-bit microcontroller
- USB support, hardware PWM, and fast sensor polling
- Designed for efficiency and minimal overhead
Requirements
- iHeater control board (this product)
- For Klipper: any printer running Klipper with USB support
- For standalone: flash custom firmware (examples provided)
Documentation & Support
- Full assembly and setup guides available on GitHub
- Preconfigured macros for quick Klipper integration
- Active support community via Discord, Telegram, and Facebook
Safety Features
- Monitors temperature limits and shuts down on fault detection
- Fan cooldown sequence after power-off
- Built-in protection for sensor and heater failures
Start building your iHeater today and improve your print quality with a stable, heated environment!
