Arduino Weekly Newsletter - Wednesday, October 28, 2015

Arduino newsletter

Top new questions this week: Trouble with sleep mode and interrupts Context I am building a small battery powered counting device. As with many other projects like this, saving power is critical. I am therefore trying to utilise the sleep mode wherever possible. This ... c++ interrupt sleep   asked by Dan Evans 2 votes Humidity values returned by DHT22 sensors failing after some time I've built a weather station using Arduino that measures temperature/humidity and pressure using a Adafruit 8266 HUZZAH. Temperature and Humidity are measured using a DHT22 sensor a ordered from ... sensors c++   asked by Stanley 1 vote Sending accelerometer data in packets from an arduino due to the pc and unto processing I'm quite a newbie to this and I've been struggling for sometime now with my school project, trying to find a way to send accelerometer data from my MMA7361 in data packets, I understand that I have ... c++ arduino-due datalogging processing   asked by dada 1 vote answered by Chris 0 votes Requesting references for learning about the upload process I would like to know of references that discuss the process of uploading code onto an Arduino board. I have read this reference on hacking the Arduino and an outline of the build process. I also found ... uploading bootloader core-libraries   asked by skywalker 1 vote answered by Nick Gammon 1 vote Debouncing a limit switch in Arduino ISR with delays I have a limit switch attached to an arduino Mega 2650 for motion control. The limit switch's two Normally Open contacts are connected to an Arduino Pin and ground, such that when the Limit Switch is ... arduino-uno arduino-mega interrupt button debounce   asked by First Jens 1 vote answered by Igor Stoppa 0 votes Best way to make an Arduino switch 8 12V LED's I'm trying to switch multiple 12V LED's with my arduino, based on the input of a (serial-in parallel-out) shift-register. The 12V comes from a separate battery, so I can use 8 mosfets to get my 12V, ... power shift-register mosfet   asked by Nico Kaag 1 vote answered by embedded_guy 1 vote How to Create a water screen with solenoid valve in arduino I want to make a water screen. I will create character with solenoid valve. Sometimes sequential valve will pass to water, sometimes not pass. And I will create some shape or character. But I don't ... arduino-mega   asked by user14255 1 vote answered by Igor Stoppa 2 votes Greatest hits from previous weeks: Grove sensors without a Grove shield There exists a large variety of sensors in the Grove System. Usually these are accessed via a special shield (Grove base shield). Can I access these sensor directly without a shield. In particular I ... sensors   asked by A.Schulz 5 votes answered by Annonomus Penguin 2 votes Counting pulses with interrupt I have been trying to count pulses from a 12,500 Hz square wave to trigger an output. Here's the code I have so far. When the Arduino is reset it prints 315 to the serial over a 25 ms ... interrupt   asked by Brandon Whosville 2 votes answered by Gerben 3 votes Can you answer this? Split arduino run mode depending on active USB connection Ok, so i have a unit that i want to add information to the EEPROM, using the USB port, such as SSID for wifi shields. Then i want to disconnect the USB cable, plugin a battery and then it should run ... usb   asked by Magic-Mouse 1 vote

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