Components

This is a tentative list of components for the Somasoid MEP project.

Table of Contents

• Mechanical
  • Motors
  • Arm Structure
  • Grip Mechanism
  • Attachment Method
  • Covering
• Electrical
  • PCB
  • Batteries
  • Programming
• Itemized Components List

Mechanical

Motors

• Servo or DC-brushed, ~40 lbs

Arm Structure

• Sheet metal or wood or RP plastic

Grip Mechanism

• Cables
• 9287K146 Music Wire Torsion Spring
• 9287K144 Music Wire Torsion Spring

Attachment Method

• Velco straps
• Shore 10A Dragon Skin Silicone cup

Covering

• Shore 10A Dragon Skin Silicone glove

Electrical

PCB

• Microprocessor
  • ATmega32U4(Datasheet)
• LEDs
  • 2 Green LED (Power, Motor Power)
  • 1 Red LED (Error)
  • 2 Yellow LEDs (Rx, Tx)
  • 5 330 Ohm Resistors
• 5 Power MOSFETs
  • 5 IRF540S Power MOSFET
  • 5 1V,1A Diodes
  • 5 330 Ohm Resistors
• USB connector
  • H11574TR MicroUSB-B Connector
  • 2 22 Ohm Resistors
  • 2 0805 1.0uF Tantalum Capacitor
• 9 Screw Terminals, 0.1" Pitch
• Voltage regulators
  • Digital: LM1085ISX-5.0/NOPB 5.0V
    • 2 1206 10uF Tantalum Capacitors
    • 2 0805 1.0uF Tantalum Capacitors
    • 1V,1A Diode
  • Analog: SPX3819M5-L-5-0/TR 5.0V
    • 2 10nF Ceramic Capacitor
    • 4 0805 1.0uF Tantalum Capacitors
    • 1V,1A Diode
  • Motors: L4940D2T12-TR 12.0V
    • 1210 22uF Tantalum Capacitor
    • 0805 0.1uF Tantalum Capacitor
    • 1V,1A Diode
• 3 Tact switches
  • 3 330 Ohm Resistors
• Crystal oscillator
  • 16 MHz Crystal
  • 2 18pF Capacitors
• sEMG Electrodes
  • SSA-924BSAF Anode
  • SSA-924RSAF Cathode
  • EVR-541(48)S Ground/Reference Electrode
• Electrode preamp/filtering components
  • INA128U Low-Power Instrumentation Amplifier
    • 10K Resistor
    • 1 330 Ohm Resistor
    • 2 0805 0.1uF Tantalum Capacitors

Batteries

• RC battery, 7-12V (Motors)
• 9V battery (PCB)

Programming

• 2x5 Pin Header
• 3 330 Ohm Resistors

Itemized Components List

For an itemized list of the following components, see this page.