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.
|CMPS12/11||Tilt Compensated Magnetic Compass|
|TPA81||8 Pixel Thermal Sensor|
|MD03||24V 20A Motor Driver|
|MD22||Dual 24V 5A Motor Driver|
|MD25||RD02 Motor Driver|
|MD49||RD03 Motor Driver|
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|
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 CMPS12_pic18f.zip
Download the CMPS11_pic18f.zip file
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|
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|
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
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
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
The SRF485 and SRF485WPR uses RS485 communications. This example show how to connect it to a PIC18.
Download the srf485_pic18f.zip file
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|
This example shows how to drive servos by using the SD20 chip.
|Download the SD20_pic18f.zip file|
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|
MD03 24V 20A
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|
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|
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|
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|
RLY08 Relay Module
Example of switching relays on and off by passing values to the relay states register.
|Download the RLY08_pic18f.zip file|