Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs
Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Collection of BASIC Stamp projects

Reynolds Electronics have collected several nicely documented BASIC Stamp projects. BASIC Stamp Microchip modules are single board computers that run Paralax PBASIC language interpreter on PIC , 8051 or Parallax Sx microcontrollers. Program code is stored in EEPROM memory from where PBASIC program commands are fetched to execute by interpreter. BASIC stamp gained their popularity because if their simple programing language – BASIC. BASIC stamp is easy to use and program and is good choice in low volume engineering projects.   Among projects you will find: A 4-digit “SERIAL” seven-segment LED display BASIC Stamp project, r IR transmitter to Rf converter, Infrared data communications, RS-232 Data Terminal, RS-232 Analog Voltage Meter, The Mini SSC II Serial Servo Controller. Basic stamp projects may be compiled and edited with PBASIC software which… Continue reading

Interfacing Nokia 6100 color LCD to AVR controller

Thomas Pfeifer have connected Nokia 6100 132×132 pixel 4096 color LCD to AVR microcontroller. LCD is also used in Nokia 6100, 7200, 6610, 7250 and 6220. He connected LCD to Atmega8 microcontroller:   As there are two types of displays: with Epson chipset(S1D15G10) and Philips(PCF8833), he wrote code for Philips chipset. Firmware is written in AVR-GCC language where image can be uploaded via serial cable. Also there are few videos view sample video on how it works AVR-3D-Engine. Continue reading

16 channel car monitor

This device was developed by Velimir have been used for monitoring 16 digital values in the car including fuel level, temperature, door closing. All signal inputs are optically isolated.   Car monitor displays events in LCD display and has sound alert ability. Project is based on 68HC11 microcontroller running at 8MHz frequency. Schematic, PCB and Source are also included. Continue reading

Amateur ECG monitoring device

This is very simple ECG monitorin device with no protection and isolation circuitry. Also signal quality isn’t good enough to interpret data seriously. But circuit works and shows ECG pattern.   Signal is amplified and filtered via Analog devices instrumental amplifier AD620. Signal then is sampled with Atmega8 ADC and sent to LabView via USART. Refik didn’t include the whole circuit, just amplifier module, but it is not hard to recreate microcontroller part as there are standard connections to ADC and USART. Program is written in assembly language where ADC reads data and sends it via USART. Continue reading

Bicycle ride distance meter

Device was developed to measure distance when riding bicycle. Magnet and magnet sensor (proximity effect) contact was used to sense wheel turn. Project consists of Motorola 68HC908QY4 microcontroller which counts pulse signals coming from reed switch. Data is displayed in 1X16 LCD module.   Schematic is very simple and can be rebuilt easily on universal board. Software is written for ICC08 compiler and can be modified easily. Main modification would be adjusting wheel diameter. Continue reading