Part 1 . Theory and Schematic Part 2 . Frequency and Pulse outputs, Significance of Rp and Cp values, Role of Rc resistor The two outputs from the keypad are connected to the PIC16F628A microcontroller. The pulse output goes to RA2 pin whereas the ...
.. how easily you can build your own home-made SMS alarm system, with minimum expenses. All you need to have is StartUSB for PIC Board , Smart GM862 with Telit GM862 module and antenna, one SIM card and a few wires. Start USB for PIC Board is a ...
Part 1. Theory and Schematic Frequency and Pulse outputs Click to enlarge There are two outputs in this circuit. One is the frequency output derived directly from pin 3 that is fed to the T0CKI (Timer0 input) pin of a PIC16F628A microcontroller for ...
by jakeselectronics This circuit is a Digital Temerature Sensor using a Dallas '1-wire' DS18B20 Digital Thermometer How It Works The DS18B20 is a direct-to-digital temperature sensor using exclusive 1-Wire bus protocol that implements bus ...
Antonio Munoz In a prior research project in the communications field, we created a portable, low-frequency (0 to 1 MHz) signal generator design. This generator had a broad output voltage range (0 to 100 Vp-p) and medium current capability (500 ...
.. that must support multiple characteristics. Also, the 10-bit ADC features of the controller can be reconfigured for other PIC controller products, such as the 12HV615 .
Part 1. Schematic Part 2. Software Output The use of this device is very simple. Turn the power on, and you will see all zeros on display for few seconds. Wait till the display goes off. Now place your forefinger tip on the sensor assembly, and ...
Keypads are a very commonly used input device in microcontroller-based systems. In a keypad, multiple switches are arranged in rows and columns so that they could be interfaced to a microcontroller with a minimum number of I/O pins. For example, a ...
.. connected to the microcontroller with individual pull-up resistors on each input. In this project I used RB4 and RB5 on the PIC to connect the encoder; this has 2 advantages, firstly you can use the PORTB internal weak pull-up (which means you ...
Part 1. Schematic Software The firmware does all the control and computation operation. In order to save the power, the sensor module is not activated continuously. Instead, it is turned on for 15 sec only once the start button is pressed. The ...