Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Arduinoil – The Greatest Combination of an Arduino with Oil Gauge

People who living at countries that have seasonal changes know that it’s definitely a living hell torture, especially when your vehicle is down in the middle of nowhere in the snowstorm! At that moment, you really don’t want to open up the car’s door and walking to the outside in below zero Celsius degree to check up your fuel oil gauge. However, you have no choice, but still have to do it in the ultimately freezing environment. Ok, you’re discovered that your vehicle was running out of fuel. So, you rush to the nearest fuel station to buy a few gallon of fuel. Once you’re checking your wallet. Darn, it’s already empty…! Honestly, it’s one of the most annoying yet torturing scene, and some of us might have been encountered with this kind of situation before. Well, for preventing the awkward moment happen on you, then it’s better to well-prepared, by developing a smart Arduinoil device! The main purpose of Arduinoil is allowing you to read the information from your vehicle’s current oil gauge and feed it to a web-enabled… Continue reading

Phduino – The pH meter using Arduino board for Glass Electrode!

How many of them ever use the pH meter to measure the pH of foods/drinks in your daily living life? Honestly, even though pH meter isn’t a brand new gadget in nowadays, but it’s still an unfamiliar device for most of the households. For those who have no idea, what is a pH meter for, it’s an electronic instrument, which is used to measure the pH (acidity or alkalinity) of liquid or half-liquid form. Normally, a typical pH meter is designed with a special measuring probe (A glass electrode) and connects to an electronic meter to measure the pH. After it, the pH reading is displaying on the screen. While most of the pH meter is only a standalone device, it’s a challenging yet fascinating project, especially when we are going to build a phduino here. Well, the phduino is a unique device, as it’s the combination of open-source pH meter using an Arduino board. This means, phduino is actually an electronic circuit, which is connected with a glass electrode pH sensor. It sounds like a very impressive device, isn’t… Continue reading

The Smart Whole Home Information Awareness Will Keep Your Home Warm!

Some of the household is equipped with heating system to keep the whole house warmer, especially during the cold season. However, when the home get bigger, then it’s harder for the users to balance the heating system. Yeah, you might choose to close and open ventilation systems from time to time, but don’t you think it’s a very hassle, when you have to do it repeatedly? Get the rid of the trouble, by simply developing a “whole home information awareness” device. Well, this whole home information awareness device is actually an Arduino controller, which is monitoring sensors in all areas of the house. This is how the device works: At a high level, there’s a microcontroller in each room. When the temperature or humidity sensors reached a certain level, it instructs the microcontroller to open and close the ventilation in a specific way. The main objective of this device is that no room will be more than 1.5 degrees and 5% relative humidity different from any other room. This means, there’s no more hot guest bedroom or cold living room… Continue reading

Let Arduino stop the time

Do you sometimes feel that you can’t get photos at the right moment. Finger probably trigger the camera too late or to soon leaving you with meaningless image. So why not to leave this job for electronics. Arduino is suitable to do the job. There are two tasks for arduino to do – one is to control camera trigger and another to sense right moment when to trigger. Trigerring can be very simple – just use right circuit connected to camera electronics. Another task require more imagination on how to detect right moment. Solutions may be sound and light. Use simple light sensor made of cheap laser pointer directed to photoresistor and let arduino trigger camera when laser beam is broken by obstacle. Using sound sensor is more interesting as it allows to photograph splashing water drops or anything that makes noise. Using simple techniques you can get really professional photos with simple camera. Continue reading

Arduino I2C expansion I/O

Did you have a situation when you ran out of microcontroller pins. Especially when you do lots of interfacing, adding many buttons or LEDs then you definitely need many I.O pins. Sometimes you can use more advanced microcontrollers, but this isn’t best solution especially when you don’t need much processing power. Why not to use I/O port expansion? Keith decided to experiment with I2C port expanders connected to Arduino board. He used Texas Instruments PCA9535 and PCA9555 16-bit I/O port expanders – one for inputs and another for outputs. This way he managed to add 16 additional I/O pins by scarifying 2 MCU pins. Author has provided a generous description about whole process and even gives us a program code for trying. Continue reading

Be a Guitar Hero with Guitar Midi Controller

If you like to y guitar, maybe you should try to do this with Guitar Hero Midi Controller. It uses well known Arduino board to interface Guitar with external MIDI device. With the current version you can: play 2 octaves of an 8 note scale at a time; change the starting note anywhere in the range of a regular keyboard; change octaves’ change keys; change tonal modes (Ionian, Mixolydian, Lydian, Dorian, Aeolian, Phrygian, Locrian); change the timbre of a sound; change the resonance of a sound; use the whammy bar to pitch bend; play chords in the mode you have the guitar set to (major/minor/etc.); rock out with a video game toy. I think this is a great way to make your defective guitar useful. in order to make the program run, you’ll need a MIDI library and guitar library. Project is well documented and illustrated. It shouldn’t be very difficult to rebuild. Continue reading