Clik here to view.
Rotary dial phone gets GSM upgrade
I found this nice Instructable from Acmecorporation on upgrading an old-school rotary dial telephone to a GSM phone using Arduino and a SIM900 GSM shield, while preserving the classical ringing sound,...
View ArticleClik here to view.
DIY Geiger Counter using 555
Geiger counters are used to detect beta particles and gamma rays radioactive emissions. The counter consists of a tube filled with an inert gas such as helium, neon, or argon at low pressure, to which...
View ArticleClik here to view.
A multifunctional Arduino clock
This multifunctional Arduino clock does more than just showing time. Besides displaying time, date, and day of the week, it also measures the ambient temperature and humidity, runs disco LED lights...
View ArticleClik here to view.
Designing a MPPT solar charger
Solar panels collect energy from the sun and convert it to electricity. Because the sun is not consistent throughout the day, the output power from the solar cell is also not constant. MPPT stands for...
View ArticleClik here to view.
Bluetooth connected thermometer
Bluetooth connected thermometers are making their way into many consumer products such as fitness devices, medical activity trackers, BBQ Grills, etc, to allow temperature monitoring through...
View ArticleClik here to view.
PIC24F Blood pressure monitor
Digital blood pressure monitors come in handy for checking and monitoring blood pressure at home or in a hospital. This reference design from Microchip provide tips to build a low-cost, low-power,...
View ArticleClik here to view.
PC stats on a tiny OLED
Rupert Hirst bought a new Nvidia GTX1080 graphics card, and in order to monitor its performance, he built an external PC stat display using an Arduino Pro Micro and a 128×64 pixel I2C OLED display....
View ArticleClik here to view.
Wireless capsule camera
Capsule endoscopy lets doctors to see inside of your small intestine, an area that isn’t easily reachable with traditional endoscopy procedures. It involves a tiny wireless capsule camera that the...
View ArticleClik here to view.
Retro table radio breathes new life with a Pi zero and becomes talkative
A late 1940s DeWald table radio is given a new life by the Instructable user MisterM using a Raspberry Pi Zero, some RGB LEDs, and a pair of PC Speakers. The radio can read out notifications from...
View ArticleClik here to view.
Making your own action camera
Action cameras are great for capturing your favorite sport activities. Connor Yamada‘s describes how to build a DIY action camera using Raspberry Pi A+ computer and a Pi camera board. This camera can...
View ArticleClik here to view.
USB media volume control
This simple ATTiny 2313-based USB media controller design from Rupert Hirst lets you add an external volume and mute control to your PC. It uses V-USB, a software implementation of a USB 1.1 compliant...
View ArticleClik here to view.
Natural light alarm clock
We are programmed to wake up gently with the natural light of Sunrise. Unfortunately, this rarely happens in modern days, where we are often forced to wake up with a loud noise of an alarm clock....
View ArticleClik here to view.
Raspberry Pi animated GIF camera
Most Raspberry Pi based cameras we have seen so far can take either photo, video or both. But Nick Brewer’s Raspberry Pi Zero camera is little different. It’s a fully customizable 3D printed camera...
View ArticleClik here to view.
Raspberry Pi audio processor and synthesizer
With a lot of horse power built in, Raspberry Pi can do a lot of interesting things with audio such as creating artificial sound effects, synthesizing music, etc. PiOSCBOX is a similar low-cost project...
View ArticleClik here to view.
Setting up a Raspberry Pi arcade with no programming
The Raspberry Pi computer has proven to be a great choice for building DIY arcade stations and playing retro games. With the program called RetroPie, you can easily turn your Raspberry Pi into a...
View ArticleClik here to view.
ESP8266 powered DIY Geiger Counter
DIY Geiger counter projects are very popular among hobbyists. They all use a Geiger-Muller (GM) tube, which is filled with an inert gas such as helium, neon, or argon at low pressure, to which a high...
View ArticleClik here to view.
DIY dual set point thermostat
We spend thousands of dollars every year on energy bills, most of which goes toward heating and cooling of our houses. Programmable thermostats are a great way of cutting down the heating and cooling...
View ArticleClik here to view.
Spectrum analyzer code for Arduino platform
Spectrum analyzers measure the frequency components contained in an input signal and displays their amplitude as a function of frequency. The amplitude is shown on the y-axis and the frequency in the...
View ArticleClik here to view.
Arduino Fan Controller
Lucky Resister‘s latest project is about an Arduino-based smart temperature monitor and pulse-width modulation (PWM) Fan Controller. It can simultaneously monitor the ambient temperature using two...
View ArticleClik here to view.
Arduino data logger
Lucky Resistor has a very nice instructional guide for making an Arduino data logger with a capacitive touch pad user interface. It is a humidity and temperature data logger powered by Trinket Pro...
View Article