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Archive for the ‘library’ Category

An AVR Atmega library for multiple HD44780 based LCD connected through i2c

Thursday, August 4th, 2016

Davide Gironi has posted an I2C multiple HD44780 AVR Atmega library: This library implements a driver for HD44780 lcd connected through PCF8574 port expander. Data is transmitted using only 2 wire over i2c with the PCF8574. This library can drive up to 8 LCD concurrently. Lcd driver is based upon...

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ESP8266: SSD1306 OLED library release

Monday, June 6th, 2016

Daniel Eichhorn writes: The “ESP8266 OLED SSD1306″ is an open source library which allows you to control those pretty OLED modules from our beloved ESP8266 module. Fabrice Weinberg cleaned up all the ugly pieces of code which I initially wrote caused by my near C/C++ illiteracy. He also added support...

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Atmega16u2 virtual serial example using LUFA Library

Wednesday, January 6th, 2016

Shane of Wattnotions has published a new build, an Atmega16u2 virtual serial LUFA board: What I wanted the LUFA library to do was pretty specific – the atmega16u2 should show up as a virtual serial port so that the computer can connect and read data from it like any other serial...

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Posted in hacks, library, PCBs | No Comments »

ZFM-20 fingerprint capture library

Friday, November 27th, 2015

Dilshan Jayakody  writes: This ZFM-20 fingerprint library is developed to capture and retrieve fingerprint images from the above sensor module. The main purpose of this library is to use ZFM-20 sensor with PC as low cost fingerprint capture unit and because of that, in-module fingerprint processing and verification functions are...

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Posted in library | 3 Comments »

RFM69_ATC: Automatic Transmission Control

Thursday, November 12th, 2015

Felix of LowPowerLab writes: There is now a new extension to the RFM69 library. It’s called RFM69_ATC aka Automatic Transmission Control. Many thanks to Tom Studwell who implemented this and shared it in the forum. The basic idea behind this extension is to allow your nodes to dial down transmission...

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DPA library for MCU

Thursday, November 5th, 2015

Ondřej Karas writes: A few months ago, I published post about DPA .NET Class. This article describes simple, but effective library used for DPA handling by MCU (UART interface). Published library is independent on the MCU family, but it was written for 32-bit ARM processors with Cortex-M3 core and GNU...

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Posted in library, software | 4 Comments »

MCP2221 HID Library

Monday, November 2nd, 2015

Zak Kemble writes, "This is a library for interfacing with the HID features of the MCP2221 USB to UART and I2C/SMBus serial converter from Microchip. The converter includes 4 GPIO pins, 3x 10-bit ADCs, 1x 5-bit DAC and more. Microchip does provide a library for interfacing with the chip, however it...

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USB Host Library 3.0-Alpha

Thursday, July 16th, 2015

Oleg over at Circuits@Home writes: The alpha of the third revision of USB Host library has been posted on GitHub. The code has been extensively re-organized to make it modular and generic; as a result, it is now possible to run it on more Arduino compatibles and also use native...

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Posted in library, USB | No Comments »

Teensy audio library gets S/PDIF support

Thursday, July 2nd, 2015

Paul over at DorkbotPDX has written an article on Teensy Audio Library with S/PDIF support: Thanks to the amazing effort of Frank Boesing, the Teensy Audio Library now has native S/PDIF output. Using a $1 TOSLINK connector, or just a red LED, you can get optical S/PDIF digital audio output....

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Posted in library | 4 Comments »

XORLib, an open source game library for PIC32s

Thursday, April 9th, 2015

Shaos shared his game library for PIC32s in the project log forum: XORLib is a simple multiplatform game library that is licensed under MIT-license and developed at least for two platforms: PIC32 with NTSC and PAL TV DOS with CGA/EGA/VGA PIC32 code based on "NTSC TV interface" examples from hackaday.io/project/2032-pic32-oscilloscope by...

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Drive a stepper motor with acceleration and deceleration using an Allegro driver on ATmega8

Tuesday, March 3rd, 2015

Davide Gironi writes: This library drive a stepper motor using the Allegro A3967 (EasyDriver) on ATmega8. It will also work on the Allegro a4988, and other type of motor driver controlled by the number of pulse received. It features: direction changing speed changing acceleration and deceleration multiple motor driving stop...

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Posted in AVR, hacks, library | No Comments »

Simple I2C SSD1306 driver for AVR

Wednesday, January 28th, 2015

Jean THOMAS of TiBounise writes: I wrote a small SSD1306 library for AVR, with a framebuffer. It even features a small simulator to let you have a preview of what it'll look like on the OLED screen without having to upload again and again code to your development board. The library...

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Posted in AVR, library | 2 Comments »

A Xively logger library for Spark Core

Monday, November 24th, 2014

Davide Gironi writes: Xively (formerly Cosm and before that Pachube) is an on-line database service allowing developers to connect sensor-derived data (e.g. energy and environment data from objects, devices & buildings) to the Web and to build their own applications based on that data. This library is a modular and...

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Arduino Library for Freescale’s MMA7361 3 axis accelerometer

Friday, November 14th, 2014

Rohit Gupta wrote a basic library for using MMA7361 3axis Accelerometer with Arduino, that is available at Github: This library helps you to easily play with the almost universal 3 axis accelerometer available in most Hobby markets that is based on Freescale's MMA7361. In order to get in working you...

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Posted in Arduino, library | 1 Comment »

ArTICL: Arduino TI Calculator Linking Library

Friday, October 31st, 2014

KermMartian over at Cemetech writes: The ArTICL library (pronounced "article") lets Arduino programs send and receive TI link protocol-formatted packets at a low level. In addition, it includes a CBL2 class that lets the calculator emulate either a CBL2 device or a calculator speaking the CBL2 protocol (thanks to Cemetech member...

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Measure audio level using root mean square on Spark Core

Thursday, October 16th, 2014

Davide Gironi writes: A Spark.io library to retrive RMS and Spl value from an audio input. This library reads data from an ADC pin and returns the RMS value of the input simply using RMS avarage. The root mean square (abbreviated RMS or rms), also known as the quadratic mean,...

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Posted in library, measurement | No Comments »

Nokia 5110 screen module with PIC microcontroller and Oshonsoft

Thursday, October 16th, 2014

Chris Holden made a font library for a Nokia 5110 display using a PIC microcontroller and Oshonsoft. He writes: Having left the 1980's behind, we decided to write our own "libraries" to write text onto the Nokia 5100 display, using a PIC microcontroller. The code below was written for a 16F877a...

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Posted in library, PIC | No Comments »

Measure brightness in Lux using BH1750 sensor on Spark core

Wednesday, September 24th, 2014

Davide Gironi writes: A Spark.io library for the BH1750FVI IC. The BH1750 IC is a light intensity sensor module with built-in a 16 bit AD converter generating digital signal. With the BH1750 Light Sensor intensity can be directly measured by the luxmeter, without needing to make calculations. This library provides...

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A DS18B20 1-wire digital thermometer AVR ATmega library

Tuesday, September 16th, 2014

Davide Gironi writes: DS18B20 is a programmable resolution 1-wire digital thermometer. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C. This library is an AVR implementation to retrive temperature from DS18B20. Built using the reference document: "Using...

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Posted in library | 1 Comment »

Node-RED hacking – audio library front-end

Wednesday, August 20th, 2014

Paul over at Dorkbotpdx writes: When I started the Audio library, a nice GUI (like Puredata or Max/MSP) seemed an impossibly distant dream. Then, in this forum thread, I learned of the open source Node-RED project. Over the last few days I've been coming up to speed on modern Javascript tools...

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Posted in hacks, library | No Comments »

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