Article

Muscle Control for Servo Motors

Arduino reads EMG signals

Although not always the most suitable as a human-to-machine interface, pushing (virtual) buttons and turning knobs is the prevailing way to control electronic devices. However, when the aim is to move or position an object, the use of (a part of) your body appears to be more intuitive or practical. In this experimental project we investigate how to flex a muscle to control a servo.

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Materials

Muscle Control for Servo Motors

PCB PDF

Software 130343-11

Extra info / Update

* Controls servo with muscle
* Arduino shield
* Through-hole only

Component list

From the Store
130343-1: Muscle Control PCB, unpopulated
Component List
Resistors
Default: 250 mW 5%
R1,R2,R9,R10,R13,R17 = 1kOhm
R3,R4 = 47kOhm
R5,R8 = 15kOhm
R6,R11 = 18kOhm
R7,R12,R16 = 10kOhm
R14 = 100kOhm
R15 = 27kOhm
R18 = 220Ohm
P1 = 500kOhm, 24-turn trimpot
Capacitors
C1,C3,C4 = 100µF, 50V, 2mm pitch
C2,C11 = 100nF, 0.2" pitch
C5,C6 = 470nF, 50V, 0.2" pitch
C7,C8 = 330nF, 50V, 0.2" pitch
C9,C10 = 10µF, 50V, 2mm pitch
Semiconductors
D1 = 1N4148
D2 = 1N5224B-TP
IC1 = MAX660CPA
IC2 = TL084ACN
IC3 = TL082CP
LED = red, 3mm
Miscellaneous
K1,K3 = 8-pin pinheader, 0.1" pitch
K2 = 10-pin pinheader, 0.1" pitch
K4 = 6-pin pinheader, 0.1" pitch
K5 = 3-way PCB screw terminal block, 3.5mm pitch
K4 = 3-pin pinheader, 0.1" pitch
PCB # 130343-1