Open RFPs
We're actively seeking partners and vendors for these projects
Pico Balloon Envelope
Seeking manufacturers for ultra-light balloon envelopes capable of long-duration stratospheric flights.
Energy Harvesting
Solar and alternative energy harvesting solutions for high-altitude, extreme-temperature environments.
Energy Storage
Battery and supercapacitor solutions for -65°C and below with minimal mass.
Active Development
Projects currently in progress
Pico Balloon PCB
Custom PCB design for lightweight telemetry and communication in stratospheric conditions.
RotorIQ
Open-source smart motor monitoring for 56C frame motors. Predict failures and optimize performance.
Sled.wtf
Regenerative exercise sled with alternator power, adjustable resistance, and full sensor telemetry.
What We Do
Gristle King focuses on R&D in niche areas that require custom hardware solutions for challenging physical environments. We specialize in:
- Stratospheric and high-altitude systems
- Wireless connectivity in remote locations
- Extreme environment sensing and telemetry
- Full-stack prototyping from PCB to cloud
Current Projects
Want to learn more about what we're working on? Check out our project docs and blog posts for the latest updates.
- MeteoSonde — Pico balloon platform for stratospheric research
- RotorIQ — Open-source smart motor monitoring
- Sled.wtf — Regenerative exercise sled with full telemetry