Modern physics experiments rely on precise timing provided by programmable digital pulse generators. In many experimental control systems, this role is filled by custom devices built on Field Programmable Gate Arrays (FPGAs). While highly flexible and performant, these systems can be difficult to scale to very large systems due to cost and complexity. Recent advances in microcontroller systems allows these much simpler systems to fill the role of digital pulse generators. Here we demonstrate one such alternative based on the Raspberry Pi Pico microcontroller which allows for timing resolution down to 7.5 ns with a minimum pulse width of of 37.5 ns.
@article{arxiv.2406.17603,
title = {Experimental timing and control using microcontrollers},
author = {Philip T Starkey and Carter Turnbaugh and Patrick Miller and Kermit-James LeBlanc and David H Meyer},
journal= {arXiv preprint arXiv:2406.17603},
year = {2026}
}