I am looking around at Dual H-Bridges and i see that most of them support 4v to 36v motors like the one below.
Are there are H-Bridges i can use to control two motors that are simple and can support the 3.7v motors below?
Thanks!
Yes but they are all surface mount I fear.
The sort of driver is the kind used to handle auto-focus motors in cameras and so forth.
For that low voltage the driver needs either low-voltage logic-level MOSFETs or BJTs
(not as darlingtons though).
For instance: http://www.farnell.com/datasheets/1806026.pdf
Note the 2mm x 2mm SMT package...
Are you looking for a DIP IC or a motor controller board ?
The L293 can power 3.7V motors because there is a voltage drop across the transistors. If you connect 4V to the driver motor power input pin, the voltage across the motor is probably going to be LESS than 3.7 V due to the voltage drop. You may need to connect
almost 5V to the driver motor power input pin to get 3.7V across the motor.
The key thing here is what were you planning to use for a power source ? If you are going to use batteries then there could be a problem. Ideally you need an adjustable supply so you can adjust the motor power to get 3.7V across the motor.
The best solution is an adjustable DC to DC converter , like this one (rated for 3A)
Unless you want to reverse these propellers, why do you need an H-Bridge?