About: Ibrar Ayyub

In this project you’re going to post a Tweet with an ESP8266. The goal of this project is to show the endless possibilities that this $4 WiFi module offers when integrates with a free platform that I’m about to show you. In order to accomplish this task you have to sign up for one free service called IFTTT which stands […]

Connected to a burglar alarm or fire alarm in the event of making phone calls playing voice messages. Controlled via DTMF actuators can operate on the spot. In recent years we have introduced several telecontrols based on the SIM900 GSM module. We released schematics and code for a gate opener (that activates when receiveing a […]

The Nixie Tube Ornament is a homage to the light-up&motion ornaments from the early 90’s. The ornament looks cool on a tree and makes a great gift. Finally, a use for IN-12/15 top view tubes! I used an IN-15A symbol nixie in this ornament. An IN-12 works great too. A video of the ornament alone: […]

“Ready for PIC“ is one of MikroElektronika‘s compact prototyping boards for 28 and 40 pin PIC microcontrollers. The board comes with PIC16F887 microcontroller which is preprogrammed with an UART bootloader firmware and thus eliminates the need of an external programmer. The on-board USB-UART module allows the serial data transfer between the PIC and a PC […]

Intended to manage solar-powered wireless sensors for Internet of Things (IoT) applications, these parts are said to be the lowest-power, single-chip Energy Harvesting PMICs, and can be used with solar cells as small as 1 cm². Cypress offers a complete, battery-free energy harvesting solution that pairs the S6AE101A PMIC, the first device in the new […]

Normally one tact switch requires one digital input pin of a microcontroller. Some designs implement keypad style multiplexing to get multiple switches on fewer inputs. However, there exist other techniques that allow you to connect many switches on a single input pin of a microcontroller. This tutorial demonstrates one such technique as applied to PIC12F683 […]

The Multimeter Clock consists of three multimeters, the first meter displays hours, the second displays minutes and the last displays seconds. A 16F628A PIC microcontroller keeps track of time and outputs a calculated current to each meter to display the current time. Get your own Multimeter Clock Kit here. See Multimeter Clock project page here. […]

A microcontroller comes with a limited number of general purpose input and output (GPIO) ports. However, some applications may require more ports than are available on the microcontroller. In such a case, GPIO expanders can be used to increase the I/O capability of the microcontroller. MCP23008 is one such device (manufactured by Microchip Technology) which […]

There is a large cellar where I could store unused items and documents, but the catch is the humidity there. It is a root cellar near a small brook and the humidity varies between 75% up to 90%.Archived material should never be exposed to humidity greater than 65%, therefore I have to isolate all documents […]

In this video we step through a an updated version of the USB demo board. Changes include: -circuit board will only contain bare minimum parts to demonstrate USB communication from host to device and device to host -for both firmware and host software, we will make the projects from scratch, import downloaded USB function libraries, […]