I am trying with Mega2560 and ADS1232 A/D chip and all connected to to my laptop. when the power supply adapter is connect, signals (in serial plotter) are noisy & biased! when i touche the GND of board or GND of USB cable with my hand, noises & biases are removed! *** GND of board & A/D chip & pow…

power supply noise remove

Topic		Replies	Views
Power Supply Ground Question General Electronics	6	2121	May 6, 2021
sainSmart 12V 16Ch Realy Board, Arduino Mega, cheap MP3 player. Ground issue? General Electronics	2	761	May 6, 2021
How to reduce DC noise General Electronics	16	10215	May 6, 2021
Analog input gets noise from power supply General Electronics	25	11251	May 6, 2021
ADC values not zero when plugged into ground and turning on LEDs General Electronics	19	7351	May 6, 2021