Im using an myDAQ to analize a joistick with an hall sensor. Im using two outputs for X and Y axis. The myDAQ its eslf I conected over an USB to my laptop. Unfortanly I get signal noise. If I using only the batarry of my laptop for the powersuply, the nois become smaller.
Than I connected it to an extern powersuply (the myDAQ) and the signal becom much smoother.