maker_ATOM shared detailed instructions of how to build over engineered true random value generator, project instructables here: Random numbers are often used in daily for example in encryption, gambling, gaming and much more. These numbers are generated by computers using complex algorithm but it can be predicated if we know the seed value and the […]
Category Archives: Arduino
esp32s2Stick
Luca Dentella designed and built a USB stick powered by esp32-s2 chip, the esp32s2Stick: esp32s2Stick is a USB device based on the esp32-s2 chip by Espressif. Thanks to the presence of an USB OTG interface, it is possible to program the chip to act as a USB peripheral (mass storage device, CDC…) and to upgrade […]
DIY air quality monitor
Dejan over at HowToMechatronics shared detailed instructions on how to build your own air quality monitor: Have you ever wondered about the quality of the air you are breathing, or maybe, why you sometimes feel sleepy in the office or tired in the morning even after sleeping all night? Poor air quality can lead to […]
Nano sheet factory
Building a nano sheet machine @ Fablab RUC Sometimes even very expensive and well build equipment breaks. This recently happened to researcher Biljana Mojsoska, a chemist at Roskilde University. She was working with nano sheets, an anti-bacterial coating for medical surfaces, as her machine stopped working. The fact that such equipment can be so expensive […]
Back to basic – Mini CNC plotter
tuenhidiy shared detailed instructions of how to easily build your own low-cost Arduino mini CNC plotter from old DVD/CD player, project instructables here. I have become too concerned with complicated details or new things, and now I should concentrate on basic, simple and important ideas. Getting back to basics, to start learning CNC, today I’d […]
Yaesu FT-817 companion display
Andy (G7UHN) over at SWLing Post has written an article detailing the build of his genius companion control display for the Yaesu FT-817 transceiver: Like so many I love getting out portable with my FT-817 but I do seem to spend so much of my operating time fiddling through the soft-keys because my most used […]
Arduino OLED display shield
Florinc posted his Arduino OLED display shield project: The 2.4″ I2C OLED display I had sitting idle is too big for the “Promini OLED Clock shield”, yet a perfect candidate for a regular Arduino shield. This is how it looks soldered on a prototype shield with two buttons on top, attached to wsduino running the […]
(Not a) triple tube geiger counter
Doz’ triple tube geiger counter project, that is available on GitHub: So, two little switching power supplies, one for the DOB-50 and CTC-5 as they have similar operating voltages, and one higher voltage one for the DOB-80, a simple op-amp comparator to output the pulses to an Arduino to process and display the results. The […]
μSim: PICmicro instruction simulator
Dilshan has published a new build: μSim is a lightweight PIC™ CPU and ALU simulator. This simulator supports the PICmicro mid-range instruction set and designed to work on both PC and Arduino platforms. Compare with most of the other emulators, μSim does not provide all MCU features and peripherals. This simulator design as a minimalistic […]
HDSP clock with SCD5583 display
FlorinC’s HDSP clock with SCD5583 display: Here is another interesting “intelligent” LED matrix display, whose name actually makes some sense (unlike HDSP-2354, among many others): SCD5583A. I reckon it means: “Serial Character Display with 5x5x8 dot matrix”. 3 is the code is for green (0 for red, 1 for yellow). More details on Wise time […]
Automatic keyboard switch tester
James made this automatic keyboard switch tester, that is available on GitHub: It uses a servo to turn a robotic finger that slowly presses the switch down. When it detects that the switch has closed, it lights up the LED and waits 100 ms for the contacts to settle, before slowly releasing the switch until […]
An ESP8266-based temperature, humidity and line voltage monitor
KA7OEI’s temperature/humidity/line voltage web server/telemetering device: As anyone who reads this blog probably knows, I have a bit to do with the operation and maintenance of the Northern Utah WebSDR – a remote receiver system that allows anyone with Internet access and a web browser to listen to the LF, MF, HF and some of […]
Measure voltage and current with the Tiny V/A Meter
Here’s KarlTorp’s palm-sized Tiny V/A: Tired of replugging your multimeter when you want to measure both voltage and current on a small project? Tiny V/A meter is the device you need! Via Arduino Blog. Check out the video after the break.
DIY ARC reactor CPU performance monitor, powered by an Arduino
Michael @ the-diy-life.com posted detailed instructions of how to build your own Arc reactor CPU performance monitor: In this project, I’m going to be showing you how to turn one of these popular DIY arc reactor kits into a useful Arc Reactor CPU performance monitor for your computer. It plugs into one of your computers […]
cVert, a truly random MIDI controller
cVert, a truly random MIDI controller @ danny.makesthings.work cVert is the result of an idea I’ve been kicking around for years, and took a few months of work to bring to fruition. The idea was to use a Geiger counter as a true random number generator to give a non-deterministic input for computer art or […]
Arduino to Nokia 84×48 LCD Heartbeat Display
Bob writes: I am working on some Arduino biometric designs perhaps for a new book. So far I have created the two line 1602 LCD display and now the Nokia 84×48 display. The Nokia display is more fun to work with since I can do a oscilloscope like display across the screen. I am working […]
3d printed portable arcade controller
Facelesstech has published a new build: So I recycled the Arduino pro micro off of one of my old controllers, In doing so I messed the pin 16 up so I had to use one of the analog pins instead. The wiring was quite simple really. I ran a ground wire round all the buttons, […]
Making an unusual and beautiful single-digit clock
A DIY single-digit clock using Arduino Nano, RTC and 3D printed 7-segment digit: Generally at whatimade.today we post original projects we dream up ourselves. Today’s post is a little different. We’re going to describe how we constructed Mirko Pavleski’s single-digit clock. We made it because it’s a fun project, wonderfully impressive to look at, and […]
DIY Arduino RC receiver for RC models and Arduino projects
Dejan @ howtomechatronics.com shows how to make an Arduino based RC receiver: Now these two devices can easily communicate and we can use them for controlling many things wirelessly. I will explain how everything works through few examples. In the first example we will use this Arduino RC receiver to control a simple car consisting […]
Bidirectional detection with ultrasonic sensors
Bidirectional detection with ultrasonic sensors @ ArduinotehNiq Check out the video after the break.