John Boxall from Tronixstuff has written an article on using Blynk with Arduino: There are many ways of remotely-controlling your Arduino or compatible hardware over the Internet. Some are more complex than others, which can be a good thing or a bad thing depending on your level of expertise. Lately we’ve become more interested in this topic […]
Category Archives: tutorials
Tutorial on the theory, design and characterization of a CMOS transimpedance amplifier
Tutorial on the theory, design and characterization of a CMOS transimpedance amplifier from The Signal Path: In this episode, Shahriar and Shayan discuss the design and characterization of a deceptively simple CMOS inverter-based transimpedance amplifier. The the large and small signal behavior of the CMOS inverter is discussed and measured using the Keithley 2450 and […]
Making PCB vias with conductive ink
Here’s an alternative method for making PCB vias using conductive ink from Diyouware: We developed an alternative method for making PCB vias through-hole using our robot. As you probably know the traditional DIY method consists in threading a wire through the holes and then soldering it and then cutting it off. For example, if we have 100 vias in […]
ESP8266 remote controlled sockets
Rui Santos made a new project, an ESP8266 remote controlled sockets: In this project your’re going to build a web server with an ESP8266 that can control remotely any sockets (safely!). Project info at Rui’s Random Nerd Tutorials site. Check out the video after the break.
How to make two ESP8266 talk
Here’s a detailed tutorial on how to make two ESP8266 talk with each other from Rui Santos: How it works? You’re going to set one ESP as an Access Point (Server) and another ESP as a Station (Client). Then they’ll establish a wireless communication and the Client sends a message to the Server saying “Hello World!”. Project […]
How to control your ESP8266 from anywhere in the world
Rui Santos shared a tutorial on how to control your ESP8266 from anywhere in the world: The most common questions I get about the ESP8266 WiFi Modules are: “Is it possible to control my ESP8266 from anywhere in the world?” and “How can I control my ESP8266 from anywhere?”. I’m happy to announce today that […]
ESP8266 firmware flashing with a Bus Pirate
Jonathan Endersby writes, “Flashing the firmware on an ESP8266 is apparently not so straight forward. This is the process I used to get it to work reliably.” Via Hackaday.io Get an assembled Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.
Unbrick a Teclast X98 BIOS with Bus Pirate 4 and Flashrom
cosmok82 has posted a tutorial on how to unbrick a Teclast X98 BIOS with Bus Pirate 4 and Flashrom: Sometimes you put your feet out of bed and a bad day comes. In all these days C/D is close to you! Enjoy our guide, step by step to unbrick your Teclast X98 tablet. First of all. […]
Tutorial: Using GNU profiling (gprof) with ARM Cortex-M
Erich Styger of MCUonEclipse writes, “I have published a Sneak Preview how GNU gprof profiling looks for an embedded target ARM Cortex-M in an earlier post. This tutorial explains how to profile an embedded application (no RTOS needed) on ARM Cortex-M devices with GNU gprof. Additionally I explain the inner workings to generate the data […]
Free energy & over-unity charging circuit – The scientific method
In this episode Shahriar builds a magical charger circuit that has an efficiency of tens-of-thousands of percent! But not to worry, it is a trick and the trick is revealed in the video. The purpose of the video is to discuss the nature of the scientific method and our society’s need for free education. Via […]
Embedded Linux APRS iGate tutorial
A detailed tutorial on how to make your own APRS iGate (Automatic Packet Reporting System) from Andrew Milluzzi: With the super cheap embedded Linux platforms (Raspi, Beaglebone, etc.) and cheap TV dongles, it is really easy to make your own APRS iGate, just like the one in the photo above. This tutorial will give you […]
Sniffing GSM traffic with HackRF and GNU Radio
HackRF and exploring GSM signals. While my friend and colleague Simone was visiting our ZIMPERIUM – Enterprise Mobile Security TLV office, we got our hands on HackRF and hacked together the unguarded boarders of Radio Frequencies. Simone had the great patience to try and explain me the boring world of complex numbers and friends (more […]
DirtyPCB Arduino business card
Here’s an instructable by ProtoG on how to make your own PCB business card: In this instructable I am going to show you how to make your own printed circuit board business card. I feel that these business cards will really help you stand out from the crowd and make a great impression. It might even […]
3D printing pen
Jason Poel Smith posted a tutorial on 3D printing pens and how to use them, instructable here: How Does it Work? Like all 3D printing devices, a 3D printing pen works by heating a plastic filament to its melting point and forcing it through an extruder tip. This is very similar to how a hot glue […]
HC-05 Bluetooth link with zero code
Phillipe Cantin writes: So you want to two HC-05 modules to automatically connect together, as soon as they’re powered up and with zero code? Well this is your lucky day since this can be done using the AT+BIND command. Let’s do this thing! For this, you will need: 1 Arduino (I’m using UNO) 2 HC-05 […]
How to drive a latching relay
Kerry Wong writes: Latching relay (a.k.a. impulse relay) can be turned on and off by momentarily applying a voltage across the relay coil. The relay would maintain in its last switched state without the need to maintain the coil current. In this post, I will show a simple circuit which can be used to drive […]
Using DS1307 and DS3231 real-time clock modules with Arduino
John Boxall over at Tronixstuff has posted a detailed tutorial on how to on how to use DS1307 and DS3231 real-time clock modules with Arduino: There are two main differences between the ICs on the real-time clock modules, which is the accuracy of the time-keeping. The DS1307 used in the first module works very well, however […]
Network control with IQRF DCTRs
Ondřej Karas of DoItWireless writes: Remote control of various devices and data collection in a wireless mesh network could be a very easy thing. This video explains DPA protocol, how to send DPA commands, how to work with IDE Macros and how to collect data through Fast Response Commands.
Modification of the Lexmark E260 for direct laser printing of printed circuit boards – MCU version
mlerman writes: After trying several brands and models of laser printer, the printer I have settled on is the Lexmark E260. I use it because: 1 – It has an excellent Local Printer Utility that allows almost every printing parameter to be adjusted. 2 – It is readily and reasonably available on Ebay or Craig’s […]
Adding bluetooth to an EEG headset for mind-controlled projects
An instructables on adding bluetooth to an EEG headset for mind-controlled projects by AndreLe: I had serial bluetooth module HC-06 lying around and decided to see if I could integrate the two and skip the Arduino altogether. Turns out, it works almost as good as the commercially available NeuroSky MyndWave for a quarter of the […]