Questions tagged [sleep]
Sleep refers to a form of power management, where the processor can be instructed to enter various levels of "sleep". Use this tag for discussions about sleep mode.
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Is it possible to put ATtiny85 to sleep while using TinywireS?
I have an arduino uno as the master I2C device talking to an ATtiny85 as the slave.
What I want to do is have the Attiny85 receive a message from the UNO to tell it to power off which will then ...
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Why isn't my ESP32 staying in Deep Sleep longer than 35 minutes?
I've been having an odd issue with a new custom ESP board. I can't push deep-sleep time past 35 minutes no matter how I adjust the timing.
Below is my current pertinent code, but basically the device ...
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Wake up from a pin, Sleep when work is done
I have a project which needs to sleep most of the time, and when a button gets pressed, it does its thing which is producing a fading sound wave (using interrupts) until it's time to sleep again.
The ...
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Sleep mode Arduino Due through IR receiver control
I need to put my Arduino Due into sleep mode in order to consume less power. My Arduino Due receives IR data and does some work with it, but I need to make it sleep until there is no data. If data ...
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ESP8266-01S only coming back from DeepSleep every 2nd time
I'm using an ESP8266-01S for a battery-powered project. The ESP is in DeepSleep, a doorbell relay pulls RST to GND, bringing the ESP to life to do some stuff, before going back to DeepSleep.
My ...
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Arduino Nano 33 BLE power consumption optimization
I am working on building a sensor using Arduino Nano 33 BLE that will measure temperature using two thermistors and angle changes. The measured values will be transmitted over Bluetooth to a ...
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How to lower the power consumption of this ESP32 during delay(500)?
The following code works. It does the following:
wake up when pin GPIO0 is connected to GND (the pulse duration is 400 milliseconds)
once every 10 wakings, I send the current index to a server with ...
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Putting samd-based board into sleep mode
I'm using a SAMD21G18A based board - the arduino zero, for a battery-powered wearable project (a type of computer mouse). I'm trying to figure out how to put the device to sleep, when it hasn't been ...
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Low power RF decoder possible?
I'm building a panic button project for my grandma which uses a 433MHz RF remote keyfob and a 3.3v Pro Mini connected to an RF receiver, a buzzer and an led. The purpose is that whenever she needs ...
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Save Circularbuffer in RTC memory of ESP32
I would like to save my Circular Buffer in the RTC memory of my ESP32 when I use deep sleep. So I have initialized it with RTC_DATA_ATTR but when I go into Deep Sleep I lose the data I've saved. Is ...
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ESP32-S2 Brownout Detector Randomly Triggered in Deep Sleep
I have thoroughly searched for answers on this over the past couple weeks, and have not been able to find a solution for Arduino.
I'm using an ESP32-S2-Saola-1M Dev board that needs to store a sensor ...
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Resuming Serial Connection after sleep on Arduino M0
For debugging purposes I want my serial connection to resume after sleep. After running LowPower.sleep() from the <ArduinoLowPower.h> library, I don't get any new serial messages in the serial ...
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Deep sleep hangs when used with D0 pin when we connect to reset pin in nodemcu
I am using a nodemcu and running a code using hall effect sensor and ultrasonic sensor with deep sleep except the deep sleep keeps hanging when I use this code. With code taken from online it does not ...
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Trigger ESP8266 reset pin on broken connection
I have an ESP8266 which I wish to place in deep sleep until a reed switch senses a door being opened. The ESP8266 is woken from deep sleep by briefly raising the RESET pin high.
In my original design, ...
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D1 Mini + TFT & I2C Connector Shield not going into deepSleep
I'm trying to write a sketch to use a Wemos D1 mini connected to several shields including a LOLIN TFT & I2C Connector Shield (v1.1.0). This powers a small ePaper display (LOLIN 2.13" diagonal ...
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Problem with counting inside INT0 ISR while in PowerDown
The issue that I have is in INT0 service in which it doesn't perform properly when MCU is set in PowerDown mode. I declared a global variable as "counter" and put it inside INT0 ISR but its value ...
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Radio receiver: deep sleep when no byte arrives, and wake up when a byte arrives?
This code works to listen for bytes via radio (with a 433 Mhz receiver module) with the Manchester library and Manchester code, and do an action when certain bytes are received:
#include "Manchester....
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How to get interrupt while in sleep mode?
I am using Arduino-uno, attached ESP-01 module
I want to give interrupt when I send some wifi-signal to arduino,
which is in sleep mode.
so I write this code:
SoftwareSerial esp(2, 3); // RX, TX
...
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356
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Waking up a NodeMCU when force load is applied to device
I am currently designing a device that will take measurements from a load cell that is in tension. I am using a v1.0 NodeMCU device that features an HX711 load cell amplifier and is running off of ...
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ESP8266 http.get() issue due to wifi authentication failure
Facing a weird issue while reading data from esp8266.
I am trying to read dynamic data from a demo text file on test server on same network in deep sleep mode.
Case1: Joining new network
I am using ...
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How can I put this display SSD1306 to sleep?
I have built a kitchen timer and it is supposed to spend most of its life in sleep mode in order to save power. I am using the SSD1306Ascii library (SPI) by William Greiman.
In this library I have ...
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Is this a good way of making a low power attiny? Unpower instead of sleeping
I am making a low power rf remote that just has 3 buttons and sends rf signals accordingly.
I've been trying to make pin interrupts work when it's in deep sleep but it's a huge hassle. And then I ...
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Wake up arduino mini with a external signal from a rf wake up receiver
I am working in an arduino which sleeps after 1.2 seconds of running time and wake up when receiving a signal in the pin 2, but this last part is not working. I tried with the four modes of the ...
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Deep sleep hangs when used with gpio 16 when we connect to reset pin
I have a node MCU and it hangs when I used a deep sleep, as shown in the image attached. My code looks like this:
/*
* ESP8266 Deep sleep mode example
* Rui Santos
* Complete Project Details https:...
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ESP32 wake from deep sleep vs hard reset
I am having a problem with my ESP32 TTGO T-Display device. If I wake from sleep using an ext wakeup the code below works as it should, if the voltage is below 3.35 the screen will not turn on and if ...
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What is the minimum value for ESP.deepSleep(n)?
I noticed that when calling ESP.deepSleep(1), the ESP8266 sometimes does not wake. Why am I entering such a low value? I want to sleep for the minimum amount of time so that I can restart with WiFi ...
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197
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Triggering a Sleep Wake-up Event using analog output from a triple axis accelerometer?
I am working on a project that uses a Arduino MKR GSM 1400 and a ADXL335 Accelerometer . I am having trouble setting a interrupt wake up event on one of the GSM's interrupt-capable pin due to the ...
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Arduino sleep mode problem while sending data with gsm module
i am trying to send gps data via sim800l gsm module. Working fine without the power down code but when i add the power down code it stops working (not sending the gps data. code execution stops in ...
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How to use one button with interrupt to enable and disable sleep mode?
I have written a program for a kitchen timer. The timer uses just one single rotary encoder with a push button on its axis. It has modes for counting up and for counting down. After counting down it ...
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Switch controlled power saving esp8266
I'm trying to build a door sensor with the esp8266. I want it to be battery powered and use deepSleep for power saving. I'm going to use a normally closed reed switch between D0 (GPIO16) and RST.
I ...
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