About: Ibrar Ayyub

Shield for Arduino designed and based on the module GSM/GPRS SIM900 or the GSM/GPRS & GPS module SIM908, to make calls, voice and data connections via GPRS  allow maximum customization and provide many configurations. With a microphone and a headset with a 3.5 mm jack (just the standard headphones for computers), you can make a voice call from […]

New family of conectors picoMAX from company Wago is substantially lower than traditional connectors and it is extremely resistant to vibrations. picoMAX is a vast system of connectors with spring contacts for „wire-to-board“, „wire-to-wire“, „board-to-wire“ but also „panel-feed-through“ connections with very compact dimensions and universal usage, with pinov 3.5mm, 5.0mm and 7.5mm pitch

Locate component hot-spots  easy but with a cost – [ via ] Advanced Thermal Solutions has introduced the TLC-100 Kit which features spray-on thermochromic liquid crystals that change color at different temperatures to reveal heat issues on chips and other electronic components.

Is it possible to use DRAM with microcontroller AVR? Yes, it is possible. Jesperh has proved it. He hooked up a DRAM to a small processor (in this case an Microcontroller Atmel 8515), and handle the RAS/CAS sequencing and refresh in software. The type of DRAM is Hitatchi M5M44800, a 512k*8 DRAM!. Bigger than the […]

Comments: All resistors are 1/4W.The circuit is powered by 9…15V DC or AC. When In Circuit Programming (ISP) connectors are used, is possible the programmer to be powered from target’s power source. Diodes D2 and D6 protect the regulator LM7805, when target’s power is used. ‘ XTAL JUMP ‘ is used to cut XTAL when […]

The ATMEL AVR programmer works with the Windows program “Ponyprog” which works under 95, 98, XP. On board the AVRs that can be programmed are those in the schematic. For other members of AVR family or the rest programmable ICs that Ponyprog can program, there is the J1 connector (CON10) which allows expanding the programmer’s […]

Devices The EEprom programmer software supports the following devices. 28C16 28C256 28C17 29C256 28C64. Hardware Diode D1 and resistor R1 provide the VDD isolation when programming the 24 pin devices. The jumper J3 must be shorted for 24 pin devices, and open circuit for 28 pin device programming. For more detail: EPROM adapter for ATMEL […]

Tired of spending hours and hours in wire soldering? Do your circuits look ugly and you are looking for a way to produce professional-like PCBs? Then you had better try photoetching. And the first step to do that is to have the right equipment that is an Automated Exposure Box. Moreover if you like tinkering […]

Introduction of 89Sxx There are some 89Sxx development board, here is another one. I have designed this single side development board to be used as a tool for learning MCS-51 Microcontrollers, and for easy microcontroller project development. The 89Sxx development board features : 89Sxx 40-DIL based design, 89S51/52/53 In System Programming (ISP) through the 6-pin header […]

This is a Minimum Mass Wireless Coupler that connects a terminal, or PC running terminal software, to other Minimum Masss Wireless devices by means of a 1200 baud data channel at 181.818 kHz. The basic Minimum Mass Wireless Coupler technology is described and links to other projects on this site that use the Minimum Mass […]