Teensy 4.1 Firmware Engineer – High-Speed Scanning Microscopy System

Title: Teensy 4.1 Firmware Engineer – High-Speed Scanning Microscopy Sync System Overview: We are developing a precision scanning microscopy instrument and need an experienced embedded firmware engineer to develop a real-time synchronization system using Teensy 4.1. What you'll build: A master clock system that precisely synchronizes a 250kHz line scan camera with a galvo mirror scanner. Key technical work: - FlexPWM-based EXSYNC at 250kHz (TTL direct output to frame grabber) - DMA-driven SPI DAC waveform generation for galvo X/Y control (±10V analog) - USB command interface for real-time parameter control Verification method: Each milestone verified by oscilloscope video submitted by contractor. No on-site visit required. Hardware: All hardware and parts costs covered by client. Contractor assembles board and ships to client upon completion. You're a great fit if you have: ✓ Teensy / i.MX RT FlexPWM + DMA (prior experience mandatory — please show prior work) ✓ SPI DAC interfacing at high speed ✓ Real-time embedded C++ ✓ Oscilloscope for verification Important: - NDA required before project start - Full IP transfers to client upon final payment - Code delivery via secure private file transfer only - No public repository allowed Timeline: 4 weeks To apply, please include: → FlexPWM or DMA prior project → DAC chip recommendation → Estimated jitter on EXSYNC output