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Created: 30. October 2003
Last update: 11. December 2007

The H-bridge controler named eProAct-Hbr1 is a digital control unit used to control small DC motors, stepper motors, relays, light bulbs for small power, etc.

 Click to enlarge

Characteristics

Interconnection:

The H-bridge controler can be connected directly to:

q    the PC's parallel port via standard 25-way plug SUB-D connector or
q    to 16-way box connector available at the data acquisition systems CMC-S3 (Dig C and Dig D), eProDas-SC1, eProDas-MF1 and eBiol.

 H-bridge connected to the CMC-S3 DAQ system, port Dig C
 H-bridge connected directly to the PC's parallel port

Power supply

The H-bridge is supplied through standard 5 mm socket, voltage 6 V to 24 V, at least 1 A, either DC (preferably) or AC. If connected through 16-way connector, it can be supplied directly from the DAQ system so no additional power source is needed.

8-bit digital output

Logic level of each bit indicated with an LED. Output voltage is about 1.5 V less then the voltage of the power supply, maximal output current is 0.5 A. Loads can be connected between any of the two output bits or between an output bit and ground (GND).

4-bit digital input

TTL logic, if not connected, logical 0 is detected. Inputs are protected against damage if input voltage is out of range.

Besides IO functions, +5V and +Vc (DC voltage equal to power supply) are available through the block connectors.

See complete technical documentation (data sheet).

Applications

Typical applications of the H-bridge are to control models of robots, devices based on stepper motors, etc.

 Model of robot controlled through the H-bridge
 Video clip of a robot controlled through the H-bridge

 eProLib is a collection of programming libraries for Borland Delphi and MS Visual Basic, including Excel applications invoking Visual Basic code. The libraries support the CMC-S3 system as well.

Availability

The H-bridge controler has been produced in a series of 60 pieces on no commercial basis. It has been tested within the project partners and co-operating schools.
Its commercial price is about 40 EUR excluding WAT and shipping.

To purchase the H-bridge controler eProAct-Hbr1, fill-in on-line order form and we will send a pro-forma invoce by traditional mail.

To make the H-bridge controller, follow "do it yourself instructions".