10k Ohm 3590S Bourns Precision Multiturn Potentiometer Multimeter They can provide 6 mA

They can provide 6 mA on outputs at 5 V VCC

These are Carbon Film Resistor with a value of 750k ohm 1/4W and tolerance of ±5%

can be arbitrary bending

When mp3 is played the red LED flashes

Metal Film semi-fixed variable resistor 250k ohm

10k Ohm 3590S Bourns Precision Multiturn Potentiometer Multimeter They can provide 6 mAA precision potentiometer is an electromechanical variable resistor that is commonly used to detect position changes in Applications where accuracy is an important consideration. It's designed for use in a machine to machine interface (MMI) Applications, so it's made of high quality, long lasting materials. Model 3590S offers printed circuit terminals and housing features to stabilize the potentiometer and facilitate direct mounting on a PCB.