Focuser · Rotator · Filter wheel controller
Armadillo · Platypus
Lunatico's original astronomical controllers for focusers, rotators, filter wheels, mirror fans and other low power devices. Remaining stock is still available while it lasts.
The Seletek family evolved over three generations. The original Seletek was the first controller; the Armadillo replaced it, improving on the design. The Platypus then added network connectivity and a third port on top of the Armadillo. All three share the same software, firmware and driver base.
Every generation shares the same rugged build: a bombproof USB connection, extra internal isolation for reliability, and a standard 5.2mm power jack.
Seletek
First generation—predecessor
The original Seletek controller that started the family. The Armadillo was designed as its direct replacement, improving on the original design. Still supported by the same software and firmware ecosystem.
Seletek Armadillo
Replaces the original · USB · 2 ports
The Armadillo replaced the original Seletek, bringing improvements to the design while keeping the same software ecosystem. Two independent peripheral ports for focusers, rotators, filter wheels or cooling fans: any two simultaneously.
Seletek Platypus
USB + Ethernet · 3 ports
All the Armadillo features plus network connectivity and a third peripheral port. The observatory workhorse: up to three devices running simultaneously and accessible over the network. It can be accessed by local network and USB with concurrent connections—one computer via network and another via local USB, or several at once via network.
Looking for a WiFi controller? Check the Seletek Limpet.
Every Seletek controller can handle multiple observatory tasks at once. Combine any supported functions up to the number of available ports.
Drive the main telescope focuser and the guider scope focuser independently, with precise stepper motor control for both.
Rotate the imaging camera or instrument rotator to any position, fully automated and ASCOM-compliant.
Drive stepper-based filter wheels for multi-filter imaging sessions without additional controllers.
Automated mirror cooling fan management that can run manually or trigger automatically based on the integrated temperature sensor.
Control any output pin freely: switch a laser pointer, a dew heater, external lights or any 12V device on and off remotely or by temperature.
Accurate internal temperature sensor, with an optional external probe, feeds real data to your automation software and can drive temperature-dependent behaviours.
A single Seletek software application covers all three controllers. Third-party drivers bring the same hardware to Linux and macOS via INDIGO and INDIlib.
The Windows application covers all three hardware variants. ASCOM drivers included, making every controller available to any ASCOM-aware astronomy software out of the box.
Full INDIGO support brings the Seletek family to Linux and macOS.
INDIlib drivers for Seletek's focuser and rotator, for use with INDI-based observatory setups on Linux.
Both controllers share the same CPU architecture and voltage range. The Platypus adds network connectivity and a third peripheral port.
| Seletek Armadillo | Seletek Platypus | |
|---|---|---|
| CPU | Atmel AT91SAM7X256 | Atmel AT91SAM7X256 |
| PC connection | USB | USB + Ethernet network |
| Peripheral ports | 2 | 3 +1 |
| Power outputs | 8 (up to 1A each, optional 2A/port upgrade) | 12 (up to 1A each, optional 2A/port upgrade) |
| Analog-digital inputs | 4 | 6 + 5 digital |
| ADC resolution | 10-bit (0–1024) | 10-bit (0–1024) |
| Temperature sensor | Internal, optional external | Internal, optional external |
| Power supply | 12–24V DC | 12–24V DC |
| Power connector | Standard 5.2mm jack | Standard 5.2mm jack |
| Dimensions | 144 × 90 × 36 mm | 185 × 124 × 60 mm |
| OS (Seletek software) | Windows XP – 10 (32/64-bit) | Windows XP – 10 (32/64-bit) |
| OS (INDIGO) | Linux, macOS | Linux, macOS |
| Simultaneous functions | Any 2 | Any 3 |
Build your own integrations with Lunaticoastro devices. Every command travels over plain HTTP, USB or UDP—one protocol shared across the whole range, so what you learn on one device works on the next.
Explore SLP391 commands · 12 devices · try one from your browser
Online documentation, software, firmware and USB drivers for all three hardware variants.
Every command the Armadillo and Platypus understands, over HTTP, USB or UDP—one protocol shared across the whole range. For scripting and custom integrations.
Full online help covering all three controllers, wiring, setup and software configuration.
Open documentation →Windows installer covering Seletek, Armadillo, Platypus and Limpet. The ASCOM platform must be installed for the software to work, even stand-alone.
Download for Windows →Individual firmware files for each hardware variant—update independently as needed.
Windows USB drivers. Install before connecting the hardware for the first time.
Mounting guide for focusers that use the Lunatico custom coupling plate—Baader, GSO, Takahashi, William Optics, and other compatible models.
Read guide →How-to guides, wiring diagrams, firmware recovery, PinByPin reference and more for Seletek users.
Browse docs →