Connected system with wiring visible
Main driver board with logic circuit
PCB to house the control buttons
Project information
- Category: PCB and Digital Circuit Design
- Completion date: April 2020
- Technologies: Logic design, PCB design, state machines
Details
This is a 3-light system for the livestream system at Trinity Presbyterian Church in San Carlos. With the onset of the Covid-19 pandemic, the church rapidly expanded its livestream technologies to allow the congregation to participate in worship remotely. To make it easier for speakers to know which camera to look at, I built a system to indicate the active camera. When switching cameras, the new camera blinks green three times before turning solid red. The operator presses a button to initiate a switch, and a fourth button allows the switch to be aborted. All the logic is implemented through circuitry on 3 custom PCBs, so no microcontroller is required. The length of time the system takes to switch lights is adjustable, both in the number of blinks and the duration of each blink.
This system is still in use every Sunday, 3 years later.