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A-Cute
User Manual

15

www.terasic.com

September 12, 2016

3.3.2

Motor Driver

The SCD provides a dual H-bridge motor driver (DRV8848) made by Texas Instruments. This motor

driver is for home appliances and other mechatronic applications. The device can be used to drive

one or two DC motors, a bipolar stepper motor, or other applications. A simple PWM interface allows

easy interfacing to controller circuits.

Detailed information on using the DRV8848 is available on the manufacturer’s website

http://www.ti.com/product/DRV8848

, or under the Datasheets\Motor folder on the SCD System CD.

shows the Connections between the GPIO and Motor Driver.

lists the pin

assignment of the Motor Driver interface connected to the DE0-Nano GPIO 0.

Figure 3-5 Connections between the GPIO and Motor Driver

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Содержание A-Cute Car

Страница 1: ......

Страница 2: ...2 Component and Layout 5 2 3 How to make your car work 7 Chapter 3 Hardware of A Cute 10 3 1 Over View 10 3 2 DE0 Nano Cyclone IV FPGA Board 11 3 3 SCD Smart Car Daughter Card 13 3 3 1 Power System 14 3 3 2 Motor Driver 15 3 3 3 ADC LTC2308 17 3 3 4 User Buzzer and LED 19 3 3 5 IR Receiver 20 3 3 6 TMD Header 21 Chapter 4 Appendix 23 4 1 Revision History 23 4 2 Copyright Statement 23 ...

Страница 3: ...or to drive the wheels and is equipped with 7 reflective sensors as sensing inputs two white LED lamps for lighting and also has a buzzer 1 1 About the Package The A Cute kit comes with the following contents 1 A Cute car body 2 4 pack AA size batteries 3 IR Remote control 4 USB Mini B cable 5 5V Power Supply 6 DC Adapter Cable 7 Quick Start Guide Users can download A Cute system CD from the follo...

Страница 4: ...com September 12 2016 Figure 1 1 Contents of A Cute Car Kit 1 2 Getting Help Here is information of how to get help if you encounter any problem Office Hours 9 00 a m to 6 00 p m GMT 8 Telephone 886 3 550 8800 Email support terasic com ...

Страница 5: ...ecture of the A Cute 2 1 Features The key features of this module are listed below Power by DC 3 3V 12V AA x4 battery Holder Accelerated by FPGA Buzzer White LED for illumination Seven sensor array to follow the line ADC chip to digitized the input power and line sensors Line following Remote Control by Bluetooth Remote Control by IR Expansion Headers ...

Страница 6: ...A Cute User Manual 5 www terasic com September 12 2016 2 2 Component and Layout The top view of A Cute is shown in the picture below Figure 2 1 Figure 2 1 A Cute Car Top View ...

Страница 7: ...A Cute User Manual 6 www terasic com September 12 2016 The bottom view of A Cute is shown in Figure 2 2 Figure 2 2 A Cute Car Bottom View ...

Страница 8: ...the operating voltages supplied to the motor will differ therefore the NiMH batteries will run the motor at a slower speed than carbon zinc alkaline batteries Make sure to check which direction the batteries are installed Match the positive end of the batteries to the positive on the battery box and the negative end of the batteries to the negative end of the battery box Ready to turn on the power...

Страница 9: ...er supply for development users Users can use the DC Power cable in lieu of the battery by connecting the 5V power supply to the A Cute Car Robot Kit Please refer to the following steps for connection procedures 1 Unplug the J1 cable battery cable from the battery box to SCD refer to Figure 2 3 Figure 2 3 J1 position on SCD board ...

Страница 10: ...d the 5V power supply refer to Figure 2 4 Figure 2 4 Connect DC adapter cable and 5V power adapter 3 Insert the other end of the DC Power cable connector into the J1 connector battery cable on the SCD The completed connection is shown in Figure 2 5 Figure 2 5 Complete connection diagram ...

Страница 11: ...s responsible for the entire A Cute car control system The second is the A Cute driver board It was designed and developed by Terasic SCD Smart Car Daughter Card It is responsible for converting the battery power and driving the motor The third is to introduce A Cute Sensor Module Board It is placed at the front of the car It is used for sensing the ground black line enabling the car to follow the...

Страница 12: ...fications and reference designs Please refer to the following URL Altera DE0 Nano A Cute basic structure refers to the block diagram in Figure 3 2 The system is structured as follows 1 It uses the NIOS II processor based controllers allowing users to use the C language development saving time and effort 2 A mount PWM IP you can control DC Motor Forward and reverse as well as an increase decrease i...

Страница 13: ...A Cute User Manual 12 www terasic com September 12 2016 Figure 3 2 DE0 Nano Board Basic structure ...

Страница 14: ...board 1 Power System Buck Boost DC DC Converter 5V 2A output for Control Board Power supply 2 Motor Driver Can drive two Brushless DC Motors 3 ADC 8 channel for IR Sensor input and Battery power meter 4 LED Two white LED for illumination 5 Buzzer You can play some sound 6 TMD Terasic Mini Digital expansion header Can use Bluetooth Daughter BTS TMD for the expansion of remote control Figure 3 3 the...

Страница 15: ...ar com product LTC3112 or under the Datasheets Power folder on the Kit System CD Figure 3 4 SCD Power System Users can control VCC3P3_PWRON_n signal to save battery power When the signal is High the 3 3V power supply on the SCD will be turned OFF when the signal is Low SCD will be turned ON and the 3 3V power supply other devices will start running The Figure 3 4 shows the connections between the ...

Страница 16: ...er motor or other applications A simple PWM interface allows easy interfacing to controller circuits Detailed information on using the DRV8848 is available on the manufacturer s website http www ti com product DRV8848 or under the Datasheets Motor folder on the SCD System CD The Figure 3 5 shows the Connections between the GPIO and Motor Driver Table 3 2 lists the pin assignment of the Motor Drive...

Страница 17: ...logic low to enter low power sleep mode OUT 3 3V MTR_Fault_n 10 PIN_B5 Pulled logic low with fault condition IN 3 3V The device integrates two H bridges that use NMOS low side drivers and PMOS high side drivers and current sensor regulation circuitry The DRV8848 can be powered with a supply range between 4 to 18 V and is capable of providing an output current to 1 A rms Table 3 3 shows the logic f...

Страница 18: ...a 4 wire SPI compatible serial interface that is connected to a 2x20 GPIO header as show in Figure 3 6 It can be configured to accept eight input signals at inputs ADC_IN0 through ADC_IN7 These eight input signals are connected to a 1x10 header as shown in Figure 3 6 Wherein ADC_IN0 ADC_IN6 is sensing results from the reflection type infrared sensor and the other ADC_IN7 from the battery voltage d...

Страница 19: ...SPI interface connected to the DE0 Nano GPIO0 Include Sensor Module power control signal Table 3 4 Pin assignment of ADC 4 Wire SPI interface and Power control SCD Signal Name GPIO Pin No FPGA Pin No on GPIO 0 Description I O Standard ADC_CONVST 11 PIN_A5 Right Motor Negative signal OUT 3 3V ADC_SCK 12 PIN_D5 Right Motor Positive signal OUT 3 3V ADC_SDO 13 PIN_B6 Left Motor Positive signal IN 3 3V...

Страница 20: ...the buzzer to play a sound you need to generate a frequency output to the buzzer Please note that the required frequency falls between 20Hz 20KHz The Figure 3 7 shows the Connections between the GPIO and LED Buzzer Driver Table 3 5 lists the pin assignment of LED Buzzer Driver connected to the DE0 Nano GPIO0 Figure 3 7 Connections between the GPIO and LED Buzzer Table 3 5 Pin assignment of LED Buz...

Страница 21: ... rate of about 4kbps for its product information The accompanied remote controller with an encoding chip of uPD6121G is very suitable of generating expected infrared signals Figure 3 8 shows the related schematic of the IR receiver and the pin assignments of the associated interface connected to DE0 Nnao GPIO0 are listed in Table 3 6 Figure 3 8 Connection between the GPIO and IR receiver module Ta...

Страница 22: ...D0 21 PIN_C8 TMD0 GPIO Connection 0 INOUT 3 3V TMD0_D1 22 PIN_E7 TMD0 GPIO Connection 1 INOUT 3 3V TMD0_D2 23 PIN_E8 TMD0 GPIO Connection 2 INOUT 3 3V TMD0_D3 24 PIN_F9 TMD0 GPIO Connection 3 INOUT 3 3V TMD0_D4 25 PIN_E6 TMD0 GPIO Connection 4 INOUT 3 3V TMD0_D5 26 PIN_D8 TMD0 GPIO Connection 5 INOUT 3 3V TMD0_D6 27 PIN_F8 TMD0 GPIO Connection 6 INOUT 3 3V TMD0_D7 28 PIN_E9 TMD0 GPIO Connection 7 ...

Страница 23: ...A Cute User Manual 22 www terasic com September 12 2016 Figure 3 9 Connections between the 2x6 TMD header and 2x20 GPIO header ...

Страница 24: ...rsion Change Log V1 0 Initial Version Preliminary V1 1 Minor corrections fixing typos 4 2 Copyright Statement Copyright 2016 Terasic Technologies Inc All rights reserved We will continue to provide interesting examples and labs on our A Cute webpage Please visit Car terasic com for more information ...

Страница 25: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Terasic P0467 ...

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