i have a project where i read two analogue inputs from two sensors and a pro Mini. I have some spikes in my readings that are present when i'm powering the system using a powerbank step-up module. When i use a 7805 and a 9V battery, the results seem clear. The spikes appear every 600-650ms.
Is there any way to filter them out on a hardware level without using code?
The frequency of the spikes is about 1.5HZ, too slow for a typical ripple of a "dirty" dc converter i think. My first though was that the module was checking for sufficient load to stay powered on. I added a dummy load but nothing changed. The project is a datalogger and unfortunately i don't really want the code to do the filtering, as it's gonna cost me some speed.