Nokia 5110 graphics tutorial

Okay, here's the deal. There are some tutorials on youtube showing how to get graphics to show on the nokia 5110 and that's great. If you just want a simple way to do that, go and watch them instead but there are a few problems I see, 1. There are none for mac. I am using a mac and everyone in the videos are using a windows. 2. Sometimes I just wanna go to the computer and search up how to make some graphic ...

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New Low Power Microcontroller Equipped with High Efficiency Class D Speaker Amplifier and Audio Playback Function

LAPIS Semiconductor, a ROHM Group Company, has recently announced the development of a low power microcontroller that integrates an 8bit low power MCU core, speech synthesis circuit, high efficiency Class D speaker amp, non-volatile memory, and oscillator circuit on a single chip, making audio playback possible by simply connecting to a speaker. The ML610Q304 also provides hardware-based audio playback oper ...

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Tachometer using arduino

Tachometer is a device used for measuring the number of revolutions of an object in a given interval of time. Usually it is expressed in revolutions per minute or RPM. Earlier tachometers purely mechanical where the revolution is transferred to the tachometer through mechanical coupling (cable or shaft) , the rpm is determined using a gear mechanism and it is displayed on a dial. With the advent of modern e ...

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LTC3892 – 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller

Features Wide VIN Range: 4.5V to 60V (65V Abs Max) Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 99% • VIN Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) No External Bootstrap Diodes Required Low Operating IQ: 29μA (One Channel On) Selectable Gate Drive UVLO Thresholds Out-of-Phase Operation Reduces Required Input Capacitance and Power Supply Induced Noise Phase-Lockable Frequency: 75kHz to 850kHz Selectable ...

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Programming an ATtiny w/ Arduino 1.6 (or 1.0)

This tutorial shows you how to program an ATtiny45, ATtiny85, ATtiny44 or ATtiny84 microcontroller using the Arduino software. These are small, cheap ($2-3) microcontrollers that are convenient for running simple programs. The ATtiny45 and ATtiny85 have eight legs and are almost identical, except that the ATtiny85 has twice the memory of the ATtiny45 and can therefore hold more complex programs. The ATtiny4 ...

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Temperature logger using arduino

Simple temperature logger using arduino (°C & °F). This project is about a simple USB temperature logging system using arduino uno and the serial monitor function in the arduino IDE. The system monitors the temperature every 2 seconds and shows it on the arduino serial monitor. The temperature is shown in °Celsius  and °Fahrenheit. The system is interfaced to the PC through the USB port. LM35 is used as ...

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Graphene-coated fibers make a good fit for wearable electronics

Researchers have successfully transferred monolayer graphene to fibers commonly used in the textile industry. The transparent, flexible material could one day be used to create embedded wearable electronics, such as phones, fitness trackers or MP3 players. Not only is graphene strong and flexible, but it's also the thinnest substance capable of conducting electricity, giving it huge potential for use in sma ...

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Open source EEG/ECG/EMG

Introduction Electrodes on the skin can be used to measure muscle (electromyography, EMG) brain (electroencephalography, EEG) and heart (electrocardiogram, ECG/EKG) activity. These electrophysiological measures are popular for clinical, research and hobbyist applications (such as brain computer interfaces). Most commercial systems are “medical grade” – these expensive systems offer high precision (16-24 bit ...

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Gas Leakage Detector using Arduino and GSM Module with SMS Alert and Sound Alarm

We have published lots of interesting arduino projects like GSM based Fire Alarm System , Line Following Robot, RFID Based Access Control System and many other useful projects. This time, we are publishing a highly useful home application – Gas Leakage Detector using Arduino and GSM Module with SMS Alert and Sound Alarm.  We have published an LPG  Sensor Project using Arduino and MQ2 sensor before – which s ...

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Arduino Vacuum Gauge Display

Initial testing. Ignore the humidity sensor, that was for something else. The vacuum gauge outputs 0-10VDC. This had to be changed to a 0-5VDC range using a potential divider so it was compatible with the Arduino. Initial build used a 10k pot in place of a vacuum gauge to make it simpler. The OLED screen simply plugs in over the arduino which made for a nice compact board. A custom pcb would've looked nicer ...

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Arduino and Python

Talking to Arduino over a serial interface is pretty trivial in Python. On Unix-like systems you can read and write to the serial device as if it were a file, but there is also a wrapper library called pySerial that works well across all operating systems. After installing pySerial, reading data from Arduino is straightforward: >>> import serial >>> ser = serial.Serial('/dev/tty.usbserial' ...

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Really universal soldering controller

The intention was to build the most universal soldering controller I can think of. It can drive any low voltage (upto 24V) iron with thermocouple or resistive sensor, in series with the heater, or separate. Here is a short list of features: - power: 9-28V, AC or DC - 2 separate heater control channels - 2 independent sensor inputs - current source on any sensor input 3uA - 12mA, wuth 2 bands (x1, x16) and 2 ...

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