Facelesstech posted a tiny breathalyzer project, that is available on GitHub: A breathalyzer built around a ATtiny85 using a MQ-3 alcohol sensor displayed on a 4×7 segment display powered by a power bank. I 3d printed the body that slots over a power bank. More details on Facelesstech blog. Check out the video after the […]
ArduPicLab published the details on how to build a current, voltage and power datalogger with Arduino and the INA226 module: In the past I have developed various projects of ammeters based on Hall effect current sensors such as the ACS712, or on High-Side Current-Sense Amplifiers such as the MAX4080SASA or made with operational amplifiers. All […]
Dilshan Jayakody posted an update on his AVR high voltage programmer project we covered previously: AVR-HV2 is Arduino based high voltage parallel programmer for AVR microcontrollers. This programmer can read, write, and erase both flash memory and EEPROM. Also, this can use to set fuse bits of AVR MCUs. Compare with the previous version of […]
Florinc writes: This Nixie shield was designed by Tyler around 2013, as an open source project. A little after the successful kickstarter campaign, it just disappeared. I was one of the backers and I received a couple of PCBs for my contribution. I used them to built clocks and I even wrote some review blog […]
Glen Akins writes: This project uses an Adafruit Feather M0 Basic Proto board to control a group of Color Kinetics or other RGB light fixtures using the DMX-512 protocol. We’ll build a DMX-512 interface FeatherWing then connect it to the Feather M0 using a Particle Ethernet FeatherWing. Once the hardware is built and assembled, we’ll […]
A DIY Arduino-based poultry egg incubator with humidity sensor @ reuk.co.uk. Neil writes: This device makes use of an always on motor which turns the eggs six full turns every 24 hours. Many of our other incubators have motors which have to be set up to run for a certain length of time a certain […]
An Arduino based remote buzzer project by Flute Systems: Base station uses an Arduino Pro Mini 5V. The reason for having 5V in this circuit is the TM1637 7-segment display. We’re using a 5V active buzzer module, two wires – signal and ground. On the left are the Adafruit PowerBoost 1000C for 5V and the […]
Edward Mallon wrote an article describing a technique he used to make analog sensor readings with digital I/O pins: Will this method replace our pin-toggled oversampling? Perhaps not for something as simple as a thermistor since that method has already proven itself in the real world, and I don’t really have anything better to do […]
In this video, Pablo Sala (KI7OJL) shows how to build your own all-in-one receiver based on an RTL-SDR. Via RTL-SDR.com.
niq_ro shared a DIY 4116 RAM tester using Arduino. More details on nicuflorica blog. Check out the video after the break.
Johnson Davies designed and built this UPDI Programmer Stick based on an ATmega328P, that is available on GitHub: This is a USB-stick sized UPDI programmer, for programming Microchip’s new 0-series and 1-series ATtiny chips from the Arduino IDE It’s based on an ATmega328P, and is essentially an Arduino Uno on a USB stick, so you […]
Use a single diode as a temperature sensor with Arduino ICU Our LED light-sensing experiments lead to an interesting observation: When these loggers are left running overnight they still produce readings because reverse-bias ‘leakage-current’ eventually triggers the Interrupt Capture Unit (ICU) – in the absence of any light. The speed of this self-discharge depends on […]
A homebrew Arduboy with removale flash cart from Facelesstech: I’ll start with the Arduboy its self. I wanted to make a small Arduboy that anyone with basic soldering skills could make. I don’t think its the easies of boards to solder but its the only way I could make it small enough and have all […]
Bob’s smart home project: At some point I though about building the smallest PCB for a sensor node that I could. Hence, the ZEN was born. The PCB is small enough to fit on a holder of 2 AA batteries. I have only build a few of these. Here is one reading the soil moisture […]
Ashhar Farhan (VU2ESE) made an Arduino based sweeper for ham radio homebrewing, that is available on GitHub: The Sweeperino a very useful Arduino based test instrument. It is the following: *A very stable, low noise signal generator from 4 MHz to 160 MHz without any spurs *A high precision power meter with 90 db with […]
David Johnson writes: This is a small board that plugs into one of the headers on an Arduino Uno or other board to provide 4Mbytes of non-volatile storage It works with either 5V or 3.3V boards, and is based on the low-cost 4Mbyte Winbond W25Q32FVSIG DataFlash chip. It is ideal for applications such as data […]
A Seven segment LED tester project from Arduino Enigma: Here is the finished Seven Segment Tester. All of the available Arduino Nano pins, except for analog input pins A6,A7 and Serial Port pins D0 and D1 are connected. This leaves us with 18 pins to bring to the 3M Zero Insertion Force (ZIF) socket. Any […]
DuWayne published a new build: While I was working on the power meter function for the latest version of the SNA, I used several fixed attenuators for checking linearity and calibration. It would be a lot easier if I had a variable step attenuator. I have several digital controlled attenuator modules that I bought one […]
Dejan over at HowToMechatronics.com shared detailed tutorial on how to control brushless motor using Arduino and ESC. Check out the video after the break.
Boris Landoni over at Open Electronics writes, “We use the platform based on the AMS sensors in combination with the Personal Computer and thanks to an ad hoc software we trace on the screen the spectrum curves resulting from the analysis performed.” More info on Open Source Project page.