TF Mk.1 Muscle

A dual-coil Nitinol artificial muscle capable of lifting 25 pounds in 2 seconds with a 25 V battery.

Pronunciation: Ther-moh-fleks mark one muscle

Also visit our getting started guide to see what's possible with the ThermoFlex™ kit and accompanying Python API.

Specifications

Parameter	Minimum	Maximum
Nominal voltage	3 V	25 V
Resistance	235 mOhms (Af)	250 mOhms (Mf)
Instantaneous Current	(Dependent on PWM %)	106 A (2s contraction)
Pull Force	5 lbs (Extension return force)	25 lbs
Contraction Time	-	2s @ 25 V

Question about specific values? Ask Kevin: [email protected]

Contraction Test Results

Setup: A variable power supply set to 15 A and an oscilloscope to track the following values.

Load: None

Set Current: 15 A

Time to Contract (TTC): 35.311 s

Total Power Consumption: 1923 J (~0.5 Wh)

What this means: The graph shows the total power consumption for a full actuation completed over 35 seconds. Standard actuations with the ThermoFlex Node Controller are under 2 seconds.