Projects

TAXI PHONE

TAXI PHONE

This project is a dedicated device. It dials a single phone number when the handset is lifted. There are two different modes of operation.. A slide-switch on the PC board allows the project to operate in automatic or manual mode. If the switch is in “auto dial” mode,  a pre-programmed phone number is  AUTOMATICALLY dialled […]

Servo Motor with PIC

How to interface Servo Motor with PIC18F4550

Servo systems use the error sensing negative feedback method to provide precise angular motion. Servo Motors are used where precise control on angular motion is needed. Servo motors are widely used in the field of Robotics to design robotic arms, palms, legs and so on. They are also used in RC toys like RC helicopter, […]

Getting started with PIC Microcontroller Programming

Getting started with PIC Microcontroller Programming

What is a PIC Microcontroller? PIC (Peripheral Interface Controller) is a microcontroller family developed by the Microchip Technology. It plays important role in embedded systems.Low cost, serial programming capability, reprogramming of the flash memory, availability of free developing tools, large user database, etc. are some of the PIC microcontroller features which make it a best […]

3310 Nokia LCD

3310 Nokia LCD & PIC12F683

Not long ago I saw this link for a 3310 temp probe. Now ive played with other LCD’s lots, but this one caught my attention because of the low power requirements (It runs from a single CR2032 Motherboard battery). I built the Temp probe as shown on the site and it worked well. I had […]

Project Ryu Lagger – Guitar Effect

Project Ryu Lagger – Guitar Effect

Do you remember BOSS Slow Gear pedal? If your a guitarist you most likely do or at least you’ve heard of it. It was a great pedal sold from 1979 to 1982 and it was made in Japan. The pedal would cut the attack of your notes giving a swelling sound. It god famous for […]

Rev 4.2.2 schematic and PCB

Rev 4.2.2 schematic and PCB

A long while back I posted a version of the schematic for the electronics for my project to build a GPS-steered parachute for rocket recovery. Since then I’ve tweaked the board a bit, to the point where the hardware design is clean and bug-free (as far as I know). So here is the current version […]

PIC10F200 based dice

PIC10F200 based dice

This page describes a PIC10F200-based electronic dice. The reason I made this was that I got a small corner left over when ordering a panel with a couple of other PCBs and thought I would rather use the corner for something fun than leave it unused, so I made a dice. The PCB is quite […]

Sensirion’s SHT1x

Humidity and temperature measurements with Sensirion’s SHT1x/SHT7x sensors using PIC18F2550 (Part 1)

Temperature and relative humidity are two very important ambient parameters that are directly related to human comfort. Monitoring these factors becomes even more crucial in various applications such as environmental control systems and indoor climate management. Integrating sensors like the Sensirion SHT1x/SHT7x can provide precise measurements, ensuring optimal conditions for occupants while also enabling efficient […]

Solar Recorder

Solar Recorder

The device used for measuring daily insolation has been developed. The device was built with a PIC18F458 and the 128MB Multimedia Memory Card, MMC. The solar radiation is measured by a calculator solar cell. The PIC chip interfaces the MMC using SPI mode. The interval between samples is set to one minute. The firmware detects […]