[Help Needed] DC Noise Affecting Arduino – SPWM Inverter

Author	Message
noneyabussiness Guru Joined: 31/07/2017 Location: Australia Posts: 527	Posted: 10:25pm 26 Mar 2025       I'll get this started... I had issues with SPI communication and noise on a lcd in my eg8010 setup, lock ups etc. I ended up using shielded Ethernet cable, (Grounded the shielding), it still has locked up once since then in the last 12 odd months.. Just imagine every wire is a antenna,  so if possible move it away from sources of " noise " and even try wrapping and grounding the sensor wires.. if you are using a pcb, keep it all away as much as possible and lots of ground plane on noisy lines, shielding and ground where possible.. on a side note, try dropping the 36-50v to say 12v, then drop it to 5v with a linear regulator,  quieter and stil low dissipation.