Author write:As with the FPGA board previously, the connections are made by soldering standard IDC ribbon cable directly to the glass substrate.As the PIC will not work from 3.3V, I had to make a power supply for the LCD. For this I used an LM317, is complete overkill but easy and quick. Both LCD supply pins are tied to the output, which is around 3.0V. All four signal lines have 10K resistors in series, to protect the LCD inputs from the 5V signalling of the PIC.[read]

Build a simple instrument that measures the quaility of AC voltage with PIC project board.This 3rd harmonic distortion meter has been designed for measuring the quality of AC supply. The meter is built with a PIC18F2550 project board and the full wave rectifier front-end circuit. The AC power line, 220VAC is measured through the step down isolation transformer. The input signal to the 10-bit ADC is full wave rectified. The software performs DFT calculation finding the amplitude of the fundamental frequency and the 3rd harmonic. [read]

This is a PIC programmer project for program PIC Microcontroller devices via PC parallel port which support several software such as EPICWin, WinPic800, P18 etc. There are two indicators LED on PCB.One for power supply and one for programming in progress. [read]

To simplify this process of connecting the real world to the virtual, the CUI provides the necessary electronics to capture sensor input or control actuator output. The CUI comes with a USB port, a power LED, a Reset switch, a Programming switch, and a prototyping area. At the heart of the board is the PIC18F4550, a versatile microcontroller made by Microchip Technologies, Inc. The PIC18F4550 features thirteen A/D inputs, eighteen general I/O ports, and an efficient RISC-like instruction set. The CUI only uses one of the PIC’s general I/O ports; the remaining ports are available for user applications to be built in the prototyping area. The total cost of the CUI is around $30 US when built in small quantities. [read]

This battery charger charges a NIMH 5-pack battery used in the BiPed robot in less than 1 hour, and charges the 10-pack NiCd used in the Snuf robot in about 30 minutes. To prevent overheating of the battery, the charging current is turned off when the slope of the battery-voltage turns from positive into negative. A second termination-criterion of the charging process is provided for safety: the charge time is limited to about 1 hour. [read]