PIC18F4410 Examples

These examples are designed to demonstrate how to use a PIC18F4410 to communicate with our modules, most of these examples use the LCD03 display module to show the results. All the modules which use the I2C bus have 1k8 pull-up resistors to 5v. You only need one set of resistors for the whole I2C bus regardless of however many I2C devices you have connected to it. You can find more information about the I2C bus in our I2C tutorial. All code was written for microchips C18 toolsuit.

Index:
CMPS03 Magnetic Compass
CMPS11 Tilt Compensated Magnetic Compass
SRF01 Ultrasonic Ranger
SRF04/05 Ultrasonic Ranger
SRF05 Ultrasonic Ranger
SRF06 Ultrasonic Ranger
SRF08 Ultrasonic Ranger
SRF02 Ultrasonic Ranger
SRF10 Ultrasonic Ranger
SRF235 Ultrasonic Ranger
SRF485(WPR) Ultrasonic Ranger
TPA81 8 Pixel Thermal Sensor
SD20 Servo Controller
SD21 Servo Controller
MD03 24V 20A Motor Driver
MD22 Dual 24V 5A Motor Driver
MD25 RD02 Motor Driver
MD49 RD03 Motor Driver
RLY08 Relay Module

CMPS03 Magnetic Compass
This uses the I2C bus to connect the PIC18F4410 to the CMPS03. It reads the bearing as a 16 bit integer and also reads the bearing as a byte. These are then displayed to the LCD03.

Download the CMPS03_pic18f.zip file

Back to Index


CMPS11 Tilt Compensated Magnetic Compass
This uses the Serial mode to connect the PIC18F4410 to the CMPS11. It reads the bearing as a 16 bit integer and also reads the bearing as a byte. These are then displayed to the LCD05 along with pitch and roll. This example includes push buttons connected to the PIC to allow it to perform calibration and to restore factory calibration..

Download the CMPS11_pic18f.zip file

Back to Index


SRF01 Ultrasonic Ranger
The SRF01 uses a single wire for both serial input and output. We have connected this to 2 pins of the PIC18F4410 for input and output. A diode is put in place to stop the SRF01 from driving the output pin when sending data back. Range is displayed on an LCD03 module.

Download the SRF01_pic18f.zip file

Back to Index


SRF04 Ultrasonic Ranger
As the SRF04 and SRF05 use the same method of communicating this example is compatible with both the SRF04 and SRF05.

Download the SRF04_pic18f.zip  file

Back to Index


SRF05 Ultrasonic Ranger
This example uses the SRF05 in one pin mode, where the Trigger and Echo signals appear on the same pin. Note the SRF05's mode pin is connected to ground to place it in one pin mode.

Download the SRF05_pic18f.zip  file

Back to Index


SRF06 Ultrasonic Ranger
The SRF06 produces between 4mA at minimum range and 20mA at maximum range. By passing this current through resistor we can  use the PIC18F4410 A/D converter to sample a voltage and turn it into a range value. The result is then printed to the LCD03.

Download the SRF06_pic18f.zip  file

Back to Index


SRF08 Ultrasonic Ranger
The SRF08, SRF02, SRF10 and SRF235 all use the same I2C interface and the basic ranging commands are the same. This example works for all these rangers. The light reading is only available on the SRF08.

Download the SRF08_pic18f.zip  file

Back to Index


SRF485 Ultrasonic Ranger
The SRF485 and SRF485WPR uses RS485 communications. This example show how to connect it to a PIC18.

Download the srf485_pic18f.zip  file

Back to Index


TPA81 Thermal Sensor
The TPA81 connects to the PIC18F4410  using the I2C bus. This example displays the ambient temperature and 8 temperatures from the thermal sensor on an LCD03 module and also drives a servo.

Download the TPA81_pic18f.zip file

Back to Index


SD20 Servo Controller
This example shows how to drive servos by using the SD20 chip.

Download the SD20_pic18f.zip file

Back to Index


SD21 Servo Controller
The SD21 is a ready wired module which can save a lot of time compared to the SD20 above. This example moves all servos through their maximum range.

Download the SD21_pic18f.zip  file

Back to Index


MD03 24V 20A Motor Driver
This example runs the motor at varying speeds forward and reverse, displaying the temperature,  motor current, and speed on the LCD03.

Download the MD03_pic18f.zip file

Back to Index


MD22 24V 5A Motor Driver
This example drives both motors and uses the turn register to alter their speeds. It displays the speed and turn register values to the LCD03.

Download the MD22_pic18f.zip file

Back to Index


MD25 RD02 Motor Controller
This example drives the RD02 motors and displays the encoder values on the LCD03 in hex format, as well as the battery voltage and current for each motor. It runs the motors back and forth between 2 values output by the encoders.

Download the MD25_pic18f.zip file

Back to Index


MD49 RD03 Motor Controller
This example drives the RD03 motors and displays the encoder values on the LCD03 in hex format, as well as the current for each motor. It runs the motors back and forth between 2 values output by the encoders.

Download the MD49_pic18f.zip file

Back to Index


RLY08 Relay Module
Example of switching relays on and off by passing values to the relay states register. 

Download the RLY08_pic18f.zip file

Back to Index