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.

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.

CMPS12/11 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..

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.

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

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.

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.

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.

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

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.

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

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.

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.

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.

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.

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.

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