I have a problem with flickering Lumen Subsea Light, that are used in an underwater stereocam setup on a fishfarm. I have noticed that certain machinery on the farm interferes with lights and cause them to flicker heavily. Although turning the machines off solves the problem, it is not a solution here
In my setup, lights are attached to acrylic casing with camera and Jetson Orin Nano board, everything is powered from the same 19V source (through ethernet+power cable), lights are controlled with separate PWM.
Any idea how to eliminate the flickering?
Hi @arturmatysik -
It sounds like you have noise on your ground affecting the pwm servo signal going to the lights. If you can’t power it from a dedicated DC supply, you may want to try adding a large filtering capacitor where the lights connect to power…
Can you share more about the machinery that causes the issue? Is it running on an electrically common system to the lights?
It is the protein skimmer that is causing the problem and its all running on an electrically common system, with power from solar or diesel generator. Cant really power from dedicated power supply, its all off-grid.
What kind of capacitor should I use? And where to place it? I power everything through ~5m power+ethernet cable, that goes through wetlink penetrator into the 6”tube, power is then simply branched to the lights, jetson and gmsl controler.
Hi @arturmatysik -
You should be able to fit an additional DCDC converter, something like this, to step your 19V down to 18V, and so add additional noise isolation via a dedicated power supply…
Otherwise, a capacitor like this installed in your 6" tube, connected with the negative leg on your ground and positive leg on your 19V rail, should help resolve things!
