SMA changes its length when electric current is applied. This video explains how to make a SMA muscle.
- SMA (Bio Metal Helix)
- Heat shrinkable sleeve
Tools and Equipments
- Crimp terminal
- Tape measure
- Soldering iron
Cut the two pieces of wire in the length of 50cm. Also cut the SMA in the length of 2cm.
2Separate the SMA
The SMA is usually wrapped around a cable. Gently separate the SMA form the cable.
Tie the wire to the SMA.
Pass the crimp terminal over the tied wire and press it strongly with pliers
5Tie the other side
Repeat the same process.
6Both sides are done
The SMA cable is connected to the wires.
7Connect the pins
In order to make it easier to handle, we will connect pins. Tie the wire to a pin.
Solder them together.
Cover it with a heat shrinkable sleeve.
Connect another pin to the other end of the SMA’s wire.
Briefly connect power. The SMA will shrink when electricity is applied.
- Application : Caterpillar Robot
- more recipes using SMA : Origami Robot (coming soon!)
- Instructor in video : Takuya Umedachi
- Research work : Caterpilike (Kawahara Lab, The University of Tokyo)