RISTER
Rister Multi-Modal Fabrication Platform · HTS Resources, LLC

ONE
PLATFORM.
MANY BREAKTHROUGHS.

A purpose-built toolchanger that prints solar films, fabricates MEA-OI chips, builds biosensors, and deposits battery electrodes — all on one precision multi-material deposition system, at a fraction of commercial instrument costs.

<$5K
Platform Cost
Sub-mm
Deposition Accuracy
8ch
Max Channels / Tool
60°C
Heated Dispensing
150 µm
Min Feature Size
Explore the Platform View Applications ↓ GitHub ↗
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01 — Core Platform

The Rister Toolchanger —
Built Where Commercial Systems Fall Short

Existing commercial dispensing and deposition platforms were designed for rigid substrates, single-material workflows, and controlled manufacturing environments. The Rister platform was built from the ground up for multi-material, multi-layer deposition on flexible substrates — in controlled atmospheres, at a cost accessible to small research teams and early-stage ventures.

The same platform that deposits perovskite solar inks deposits hydrogels, cell suspensions, electrode materials, and battery slurries — without substrate removal between steps. Every application on this site runs on the same hardware.

Rister Toolchanger Platform
Platform Hardware
Rister Toolchanger
on Voron Trident

Custom Voron Trident frame adapted for multi-modal toolchanging. Running Klipper-based firmware with CAN bus tool communication. All tool heads, syringe pumps, and fluid fittings fabricated in-house.

View Hardware Repository ↗
01
Mid-Run Tool Exchange
Dedicated tool heads per material class enable sequential multi-material deposition in a single substrate-loaded run. Coordinate integrity maintained across all exchanges via camera fiducial referencing.
<5 sec
02
Precision Liquid Dispensing
Stepper-driven syringe pumps with servo-controlled 3-way valves. Sub-nanoliter to microliter volume range, tunable via flow rate, gantry speed, and nozzle gauge (10G–34G). Heated to 60°C with PTFE-lined fluid paths.
Sub-nL
03
Camera-Guided Referencing
Raspberry Pi 5 with autofocus camera. Real-time QC, fiducial-based absolute referencing, sub-millimeter positional verification across all tool swaps. Tool-offset measurement and correction built in.
16 MP
04
Scalable Multi-Channel Architecture
Each tool head supports multiple independent dispensing channels — up to 8 demonstrated per tool. Adding channels means printing more hardware, not purchasing proprietary components.
Up to 8ch
05
Controlled Atmosphere Ready
Designed for N₂ glovebox and controlled atmosphere operation. Compatible with air-sensitive material systems including perovskite precursors, reactive battery slurries, and sterile biological workflows.
N₂ / Inert
06
In-House Fabricated Components
Syringe pumps, valve bodies, tool frames, and fluid fittings are all fabricated on the platform itself. Near-zero marginal cost to scale channel count or replicate the system.
<$5K
02 — Technical Specifications

Platform
Specifications

Purpose-built motion control running proven open-motion-control firmware. Every mechanical and fluid component documented in the hardware repository.

Build Volume480 × 380 × 250 mm
Positioning Accuracy±0.025 mm
Min Feature Size150 µm (nozzle-limited)
Nozzle Range10G – 34G (0.26 – 2.69 mm)
Dispensing TempAmbient – 60°C heated
Tool Change Time<5 seconds
Camera Resolution16 MP (4656 × 3496)
CommunicationCAN Bus, MQTT, HTTP, Serial
Firmware BaseKlipper (modified)
Control SoftwarePrinter Designer + Array Mgr
Rister Toolchanger
Tool Head Suite
Liquid Handling Tool — 4-channel heated pipette, 60°C, PTFE fluid paths
Active
Thin-Film Deposition Tool — perovskite / electrode inks, ≤100°C
Active
FDM Extrusion Tool — structural and biocompatible PETG / TPU
Active
Camera Inspection Tool — RPi 5, autofocus, fiducial referencing
Active
UV Curing Tool — in-situ crosslinking, encapsulant solidification
Planned
Gripper / Pick-and-Place Tool — sub-mm organoid placement
Planned
Validated Milestones
  • Multi-material toolchanger — full load/unload cycles without coordinate loss
  • Mimic ink aspiration and dispensing with 25G pipettes
  • 3-drop sub-mm precision array after complete tool exchange sequence
  • Camera fiducial referencing and tool-offset correction implemented
  • Printer Designer end-to-end: layout → G-code → execution
03 — Applications

One Platform.
Six Application Areas.

Each application leverages the same core toolchanger capabilities — precision multi-material deposition, controlled atmosphere operation, and camera-guided placement — applied to a different material system and market.

Active Development
Nanosolar Tile
Building-Integrated Photovoltaics
Transparent perovskite solar film that turns existing windows and building facades into distributed power generation surfaces. FASnI₃ tin-based absorber deposited via line-array patterning at ≤100°C on flexible ITO-PET substrates. No cleanroom required.
8–12%
Target PCE
55–65%
Light Transmission
<$15/m²
Target Mfg Cost
View Project Notebook →
Concept Development
MEA-OI Fab
MEA + Organoid Intelligence Fabrication
Low-cost organoid intelligence chips — multi-electrode arrays printed on-platform, organoids placed with camera-guided precision, culture automated with electrophysiological monitoring throughout. No cleanroom, no $25K device.
150 µm
MEA Feature Size
Sub-mm
Organoid Placement
<$500
Target Chip Cost
View Project Notebook →
Platform Adjacent
Organ-on-Chip
Biological Microfluidic Devices
The culture chamber fabrication, hydrogel dispensing, and automated media exchange capabilities developed for MEA-OI Fab apply directly to heart, liver, lung, and kidney organoid research platforms — at a fraction of current commercial device costs.
Multi-organ
Chip Types
Automated
Media Exchange
Discuss Partnership →
Horizon 2
Battery Electrodes
Flexible Printed Energy Storage
Printed lithium-ion and solid-state battery electrodes on flexible substrates. The multi-channel deposition system enables sequential printing of anode, electrolyte, and cathode layers in controlled atmosphere — directly applicable to the emerging flexible battery market.
Flexible
Substrate
Inert Atm.
Process Environment
Discuss Partnership →
Platform Capability
Combinatorial R&D
High-Throughput Materials Screening
Multi-channel dispensing enables rapid parallel screening of material compositions — perovskite formulations, electrode materials, hydrogel chemistries, ink rheologies. Run dozens of variants on a single substrate in a single automated session.
8ch
Parallel Channels
Array
Sample Format
Discuss Research Access →
Available Now
OEM Components
Platform Modules & Implementation
Individual platform modules available for integration: piezoelectric dispensing systems with 100V amplifiers and high-speed droplet imaging, microfluidics systems with automated wash stations and pressure compensation, and complete multi-modal toolchanger implementations.
100V
Piezo Amplifiers
µs
Flash Sync
Request OEM Quote →
04 — Work With Us

Open to
Collaboration

The Rister platform is early-stage and actively seeking the right partners to accelerate each application area. Bringing the fabrication infrastructure — partners bring domain expertise, characterization capability, or deployment context.

Research Lab Partners
Materials characterization · Electrophysiology · Thin-film metrology
Early-Stage Investors
Deep tech · Advanced manufacturing · Clean energy · Synthetic biology
Accelerator Programs
Clean energy · Biotech · Hard tech · California-based preferred
Pilot Customers
BIPV · Organoid research · Flexible biosensors · OEM integration
Government & Institutional Programs
DOE · NSF · NIH · DARPA — open to introductions and referrals
05 — Contact

Get
In Touch

Open to conversations with researchers, accelerators, lab partners, and investors. Also available for custom platform implementation and OEM component inquiries.

Richard Rouse
Founder — HTS Resources, LLC · San Diego, California
Emailrichard@htsresources.com
Phone619-846-8291
Webhtsresources.com
GitHubhtsrjdrouse/rister-toolchanger
Nanosolar Tile → MEA-OI Fab → GitHub ↗