Story Warning: Digispark uses Attiny85 PIN#1 as I/O – remove RESET button functionality Notes FOR ADVANCED USERS ONLY The Trinket 5V and the Digispark share the same hardware design, right down to the LED being on PB1. Personally, I prefer the Trinket hardware over the Digispark, but the Digispark has a totally different ecosystem and is
Trinket Firmware Exorcism Continue Reading
Story This is a small semaphore you can put on your desk. You can use it to tell whatever you want to the people around it. For example, because you need some concentration and you’d like your colleagues not to disturb you. Or to tell the status of the system you’re managing. Or say which
A Semaphore for your Office Desk Continue Reading
Oh, Hai Hai (‘hi’) is an integration point for several stand alone smart home technologies. Hai runs on the Raspberry Pi and can be adapted to optimize electricity consumption (lighting/HVAC) and water usage (irrigation/rain collection) in a number of ways. Hai was originally envisioned for any Pi running Raspbian OS, but is also being ported
OH HAI! on Windows 10 IoT Core Continue Reading
This would be the continuation of my previous project Programming ATtiny85 with Arduino Uno. Now with cheaper ATtiny85 in place I was looking for cheaper ways to transmit the sensor data. Which brought me to nRF24L01+ a cheap, low power RF transceiver. This seemed to be the better solution for me. But there was one
nRF24L01+ with ATtiny85 3 Pins Continue Reading
If you want an article on general 74hc595 shift register usage with detailed explanition on how it works/what it’s doing, you want this article here: http://bildr.org/2011/02/74hc595/ The following code and library are compatible with arduino software 1.0+ ONLY. You can download the newest version of the arduino software here. Earlier this year we did an
Arduino: Individually Control Shift Register Pins Continue Reading
Eventually you are going to find yourself holding a 12v solenoid, motor, or light and wondering “How the heck am I supposed to control this from my Arduino?” And we have covered this in the past. Today we are going to talk about another way of doing just that, this time with an N-Channel MOSFET
High-Power Control: Arduino + N-Channel MOSFET Continue Reading
In the past we have covered a few things that interact through serial, from RFID readers to controlling an Arduino’s pins using the serial terminal. Serial as we have talked about it is actually know as UART, and operates over 2 pins RX and TX (receive and transmit). These connections have previously been limited by
A Swarm of Xbees! Arduino Xbee Wireless & More Continue Reading
It seems like touch screens are plastered on every consumer electronic device from your phone to your refrigerator. And why not right? Well, even though those beautiful multitouch hi-res screens are a little pricy and crazy hard to develop with, doesn’t mean we cant still add a touch panel to our project. The touch panel
Get Touchy – Nintendo DS Touch Screen + Arduino Continue Reading
The following code and library are compatible with arduino software 1.0+ ONLY. You can download the newest version of the arduino software here. Outputting data can be extremely useful, and typically when we look at doing this, it is either to the Arduino’s serial terminal, or to some sort of display. But what about making
Displaying on Paper – Thermal Printer + Arduino Continue Reading
Ultrasonic range finder using 8051 mictrocontroller has been already published by me in this website. This time it is an ultrasonic range finder using arduino. HC-SR04 ultrasonic range finder module is used as the sensor here. The display consists of a three digit multiplexed seven segment display. This range finder can measure up to 200
Ultrasonic range finder using arduino Continue Reading
Free Arduino projects, circuits, code and tutorials. Pick a board, pick a sensor, build something.
