Wemos D1 mini deep sleep wake up

The ESP8266 module has the deep sleep mode which allows to put it in hibernation to save the battery. You can wake up the module at regular intervals to make measurements and publish them on a server. The RESET pin (RST) is also used to wake the ESP8266. For example, the rising edge (the signal) of a motion detector (PIR) can be used You must put your device in deep-sleep; set a timer to wake; wake; send data; put device in sleep; All esp8266 (except esp01) have a pin with wake label, and through this pin connected to the RESET it will be possible to wake up the microcontroller. WeMos D1 mini pinout. You can se various sleep option, check your better choiche However, overall power usage is still not good because the ESP8266 max sleep time is about 1 hour. This means the ESP8266 still wakes up and uses 15ma for a few seconds before going back to sleep. At 5 minutes deep sleep cycle, a 1500mah would be good for around 5 days Wemos D1 Mini doesn't wake up from deepSleep() #81694. By 21isenough - Thu Apr 11, 2019 12:43 pm × User mini profile. 21isenough . Posts: 2; Joined: Thu Apr 11, 2019 12:26 pm; Status: Off-line - Thu Apr 11, 2019 12:43 pm #81694 Hi all I'm loosing my sleep here. Can't figure out what exactly is going on here. I've got two Wemos D1 Mini and on one, my sketch with the deepSleep function works. summary: Wemos D1 is not the best choice for deep sleep experiments. Re: Wemos board: which pins for wake up from deep sleep? #58352 By happyspider - Fri Nov 18, 2016 11:35 p

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I use e.g. Wemos D1 mini which has a low dropout voltage regulator for battery applications. Copy link Author then around 250ua when in deep sleep. After it attempts to wake up, I can see the on board led flash, it uses around 36ma. My guess is as other has mentioned it wakes into flash state. I also find that I have to press the reset button twice to wake it from deep sleep. I can also. WeMos D1 & D1 mini Arduino Examples. Contribute to wemos/D1_mini_Examples development by creating an account on GitHub

Ein Wemos D1 mit BME280 soll alle 30 Minuten aufwachen, allerdings zu festen Uhrzeiten (volle Stunde / halbe Stunde), seine Daten an einen Server senden und anschliessend wieder schlafen gehen. Mit einer festen Zeitangabe für den Deepsleep hat das natürlich nicht geklappt, die Zeit ist ziemlich schnell weggelaufen The RST pin is held at a HIGH signal while the ESP8266 is running. However, when the RST pin receives a LOW signal, it restarts the microcontroller. Once your device is in Deep-sleep, it will send a LOW signal to GPIO 16 when the sleep timer is up. You need to connect GPIO 16 to RST to wake up (or reset) the device when Deep-sleep is over ESP8266 Deep Sleep Timer. Der ESP8266 kann seinen Deep Sleep zum Beispiel in regelmäßigen Abständen beenden, eine Aktion ausführen und dann wieder den Deep Sleep starten. Das eignet sich zum Beispiel ideal für Temperatur-Sensoren. Dann kann alle 30 Minuten die Temperatur gemessen und an einen Server gemeldet werden und der ESP8266 legt.

Wemos D1 mini pro, DHT22 und esp.deepSleep. Arduino Forum > International > Deutsch (Moderator: // D8/GPIO15 - HCS - wakeup low - darf daher nicht mit SS vom PN532 belegt werden! WS2811 geht am ESP: D1 D2 D4 D8 10. Bei D4 leuchtet die blaue LED am ESP permanent // geht nicht am ESP: D0 //serial // D9/GPIO03 - RX //serial // D10/GPIO01 - TX // GPIO09 - macht nur Probleme // GPIO10 - für. The current draw was a pretty steady 0.8mA, or 800uA. That's a obviously a far cry from the sub-100uA reportedly achievable with the barebones ESP-01 due to all the extra components on the D1 Mini. Reported deep sleep current draw for the D1 Mini is all over the place, from 0.21mA (5V), to 0.3mA (3.3V), to 6mA (USB) I have a Wemos D1 Mini which I used to log temperature and humidity to Blynk and show it on an OLED. Now I am making it run on solar power and want to incorporate deep sleep (I've done this before and want to do it again). However, I'm having trouble getting the deep sleep part to work. If I don't connect D0 to RST, it doesn't wake (duh), but.

The following two pictures show how to connect the D0 pin with RST to wake up the ESP8266 NodeMCU and WeMos D1 Mini microcontroller after the deep sleep phase.. Deep-sleep Current Measurement . Because in theory the deep-sleep mode of the ESP8266 is the mode, where the microcontroller has the lowest power consumption, we want to know how low is the consumption compared to the reference example. I have a Wemos D1 (ver. 2015-08) and I am trying to get it to sleep. I've managed to get it generally up and running/got wifi to work etc, but the deep sleep function is beyond me. I tried connecting RX<-D0 pin to RESET, also tried with a 10k resistor. Neither worked. I then tried D2 (listed as gpi016 on the back of the board) to RESET, this.

ESP8266, Deep Sleep mode test, wake up with a PIR motion

The ESP8266 has a limitation of a maximum of ~71 minutes DeepSleep. To overcome the limitation, a short wake-up is performed - the device will wake up every hour for <0.3 seconds until the DeepSleep time is reached. The remaining DeepSleep time is decremented, and the device is then put back in DeepSleep again Forum: Mikrocontroller und Digitale Elektronik Wemos d1 mini Deepsleep funktioniert nicht. Forenliste Threadliste Neuer Beitrag Suchen Anmelden Benutzerliste Bildergalerie Hilfe Login. Wemos d1 mini Deepsleep funktioniert nicht. von Fl0_ F. (Firma: Alexa) 17.07.2019 19:32. Bewertung 0 lesenswert nicht lesenswert: Ich habe Reset und D0(GPIO16) verbunden und dieses Programm um DeepSleep zu. Habe mir 6 Sensoren mit Wemos D1 gebaut für temperatur und luftfeuchte laufen mit einem 18650 Lipo ca 8 Wochen Als Weboberfläche nutze ich EspEasy da ist mqtt und deppslepp sehr einfach zu konfigurieren Auf jedenfall muss Gpio16 mit RST verbunden werden. Zugriff ist nur wärend der aufwachzeit möglich die ist auch einstellbar!! oder Gpio16 mit RST trennen und reset ausführen. 1 Reply Last.

Practical, easy and short tutorial showing how to use deep sleep function while writing code and hardware connection to enable reset after deep sleep period... To put the ESP8266 in deep sleep mode, use ESP.deepSleep (uS) and pass as argument sleep time in microseconds. GPIO 16 must be connected to reset (RST) pin so the ESP8266 is able to wake up. To put the ESP8266 in deep sleep mode for an indefinite period of time use ESP.deepSleep (0). The ESP8266 will wake up when the RST pin receives a LOW signal

Unlike many other similar projects on the internet, this article talks about how to put the ESP8266 into deep sleep mode and configure it to wake up automatically at regular intervals for sensor readings. IoT temperature/humidity logger using WeMOS D1 Mini board and DHT22 sensor . Circuit setup. The connection between the DHT22 and D1 Mini board is shown in the figure below. The DHT22 sensor. Connect the two pins RST and D0 to activate wake up from deep sleep. On my WEMOS D1 mini (V3.0.0) this is easily possible if you connect the two solder pads marked with sleep. From now on (deep sleep on board activated) you need to connect GND and D3 (GPIO0) to program the D1 mini. After you have connected the pins you can flash the script (github repository) onto the D1 mini. To run the. The WEMOS D1 is a board built around an ESP8266 System on Chip. That component has several suspend modes, we are interested in deep sleep. When the board enters deep sleep, power consumption drops below the milliwatt. An internal timer wakes up the device after a programmable interval (not more than one hour), but the internal state is lost: no variables, no clock, everything is lost. You. Deep Sleep Component¶. The deep_sleep component can be used to automatically enter a deep sleep mode on the ESP8266/ESP32 after a certain amount of time. This is especially useful with nodes that operate on batteries and therefore need to conserve as much energy as possible

WeMos D1 mini (esp8266), the three type of sleep mode to

• Die Antwort lautet dann Deep-Sleep Wake, auch wenn der Reset Pin per Taster vor Ablauf der Schlafperiode getriggert wird. Wichtig ist entweder die Brücke vor einem neu Programmieren auszulöten oder anders schaltbar zu machen. Damit man genug Zeit hat den neuen Sketch auf den ESP hoch zu laden. Alternativ kann man vor dem sleep ein delay von 30 Sekunden einbauen. Update: Um den ESP zu.
• i. 19 September 2019 . WeMos D1
• 2. Deep-Sleep mit Zeit. Um den ESP auf bestimmte Zeit in den Deep-Sleep zu schicken, wird die selbe Zeile Code benötigt. Diesmal aber mit Zeitangabe. Die Angabe der Zeit erfolgt in uS. ESP.deepSleep(5000000); Diese Zeile schickt den ESP für 5 Sekunden in den Deep-Sleep. In der Funktion können auch mathematische Bezeichnungen verwendet werden.
• i not waking up again. I am using the wemos d1
• i
• The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. Features Highly Accurate RTC Completely Manages All Timekeeping Functions Real-Time Clock Counts Seconds, Minutes, Hours.

I am hoping to use a WeMos D1 Mini to control a Raspberry Pi. To save battery, I want to put the microcontroller into deep sleep and wake it up by pressing a button. The same button should be used to activate a method that will put the controller into deep sleep after shutting down the Raspberry Pi Thanks for your tips, I got curious and from yesterday my Wemos mini D1 is sleeping as expected feeded by a really small home made UPS (only 700 mAh). Every 20 minutes reads the data from a Sensor, sends an email, update the App and goes to sleep again. Regard The NodeMCU and the Wemos D1 WiFi, a larger profile that mimics the Arduino UNO form, reliably woke from deep sleep. So far, the Adafruit HUZZAH fails to wake after 20 or 30 sleep cycles. I'm still working on the HUZZAH but the letter carrier just brought a package with three Wemos D1 Mini ESP8266 devkits and an OLED display shield

How to wake esp8266 from deep sleep without continuous

NodeMCU v.1 / WEMOS Mini - Fail to Wake up from deep sleep. Ask Question Asked 11 months ago. Active 10 months ago. Viewed 38 times 0 \$\begingroup\$ I'm Trying to put to deepsleep a Wemos mini/ NodeMCU / ESP-01, and facing the same problem - fail to wake up. Looking around - I've found some articles such this github issue, and this issuedescribing same behavior of not waking up as expected. Using sleep(0) will set no wake up timer, connect a GPIO to pin RST, the chip will wake up by a falling-edge on pin RST. Der Deep-Sleep Modus hat jedoch eine kleine Einschränkung: Und zwar ist die maximale Dauer auf ca. 71 Minuten begrenzt: The maximum sleep time is 4294967295us, ~71 minutes. Das sollte aber für die allermeisten Anwendungen. There are 10 internal capacitive touch sensors. The capacitive touch pins can among other things be used to wake up the ESP32 from deep sleep. Those internal touch sensors are connected to these GPIOs

Wemos D1 Mini doesn't wake up from deepSleep

1. Wemos D1 Mini ca. 5 € bei Amazon.de; 3 Volt Solarzelle für 8 Daten via MQTT an IObroker. Ansonsten sind beide Geräte im Deep Sleep und verbrauchen nur Minimal Strom. Der Ablauf nochmal grafisch dargestellt: Aktuell läuft das ganze noch im Testbetrieb, um zu sehen, wie sich die Batterielaufzeit verhält. Um möglichst lange Betriebszeiten zu erreichen werden 2 NiMH Akkus durch eine 3V.
2. /* Deep Sleep with External Wake Up ===== This code displays how to use deep sleep with an external trigger as a wake up source and how to store data in RTC memory to use it over reboots This code is under Public Domain License. Hardware Connections ===== Push Button to GPIO 33 pulled down with a 10K Ohm resistor NOTE: ===== Only RTC IO can be used as a source for external wake source. They.
3. utes for example, and sleep the rest.

ESP32 Deep Sleep Wake-up sources. Wake up from deep sleep mode can be done using several sources. These sources are: Timer; Touch pad; External wakeup(ext0 & ext1) Wake-up sources can be combined, in this case the chip will wake up when any one of the sources is triggered. These sources can be configured at any moment before entering in to sleep mode. Warning: It is also possible to go into. The wake-up from deep-sleep is boot startup. So your code doesn't start if io 0 is not pulled high. Add a pull-up for io 0. If you set Serial Monitor to 74880 baud, you will see the boot-log readable. It will print 1 as first value in boot mode. This value is set from state of io 15, 2 and 0. 15 should be LOW and io 2 and io 0 HIGH for normal. The ESP-01 does deep sleep as well as any other ESP8266 module as long as you don't require timed sleep. If you want the module to wake after a set amount of elapsed time, The ESP-01 is not the module to use. But that is not what I wanted. Elapsed time is pointless when using a PIR. I wanted the ESP-01 to waken only when triggered by motion sensed by the PIR. If there is no motion sensed for.

use reset button. in deep sleep the esp8266 is complete off. only RTC is running and sets io 16 LOW if there is time for wake-up. io 16 must be wired to reset for wakeup from deep sleep - Juraj Feb 7 '20 at 21:2 I'm using Wemos D1 mini and have measured that it uses only 60 µA in deep sleep mode. With this consumption you can run ESP for months with battery. Of course, depends what you do with it between sleeps. I have tested application that measures battery voltage every half hours and sends it to internet, and it has been running with AAA batteries. External Wake-up In Deep-sleep mode, the chip can be woken up and initialized by a low-level pulse generated on the EXT_RSTB pin via an external IO. 4.4. Application Deep-sleep can be used in low-power sensor applications or in the scenarios where data transmission is not required for most of the time. The device wakes up from Deep-sleep at intervals to measure and upload data, and then goes.

Wemos board: which pins for wake up from deep sleep

1. i v2.1.0 here, to my knowledge original ones from Wemos. They have some ESP-12 module with WeMos on the metal shield. They work properly as far as I can tell: When GPIO16 and RST are externally connected, waking from deep sleep using the RTC works as expected (using the code fro
2. i ist aus zwei gründen nicht das idealste für den Batteriebetrieb: der größte Stromverbrauch im deep sleep entsteht durch den serial chip. Die deep sleep current beträgt deswegen milli Ampere im Vergleich zu einem nackten esp12f chip welcher nur nano Ampere verbraucht. die esp8266 haben den Nachteil (gegenüber den teureren esp32), dass diese nur mittels einem pin und RTC.
3. The experiments will have the esp8266 wake-up from deep-sleep (basically a reset), send some data to a server on the local network using raw TCP, and go back to sleep. Really basic. Diving one level deeper, the esp8266 will need to go through the following phases during its waking time: initialize the microcontroller (set-up clocks, flash access, caches, etc) scan wifi channels to locate the.
4. i schematic. Possibly the high power consumption during sleep mode can be fixed like discussed here. Wake up from sleep. Basically I know of two practical mechanisms to save power by going into deep sleep and waking up again: Connect pin D0 (GPIO16/WAKEn) to the RST pin and use the ESP.deepSleep(x) command. This puts the ESP into a.

ESP.deepSleep not able to wake up device · Issue #5892 ..

Getting out of deep sleep. When this state is active, you can't connect to the web interface. In fact, the ESP is turned off and only a dedicated timer circuit is still powered to wake up the main ESP core. There are three ways to get out of sleep mode: Cold boot. Power off the ESP and reconnect power. You will have 30 seconds to connect to the. Now, if you connect GPIO 16 to RST the device will wake up (i.e. reset) when deep sleep is over. Ideally you put a low-valued resistor, like 330 - 1kΩ, in between. Side note: on the NodeMCU modules, GPIO 16 is marked as D0. Some impressions, note the resistor in the 2nd image. Connecting GPIO16/D0 with RST on an ESP8266 Software/API. The Espressif NON-OS SDK, on which the ESP8266 Arduino. WeMos mini pin D3 / GPIO0. 10k pullup on D1 mini schematic, and reset circuit connection to DTR/RTS/RST WeMos mini pin D4 / GPIO2. 10k pullup on D1 mini schematic, blue LED & 470 ohm resistor on ESP-12 DeepSleep. Deep sleep support for up to 1 day (i.e., 86,400 seconds) (e.g., if used with KNX) (DeepSleepTime). The ESP8266 has a limitation of a maximum of ~71 minutes deep sleep. To overcome. Der Deep Sleep des ESP32 wird einmal per Timer umgesetzt. Damit lässt sich beispielsweise ein Sensor mit Batterie oder Akku umsetzen, der einmal pro Stunde einen Wert an einen Server sendet und die restliche Zeit im Energiesparmodus verbringt. Neben dem Deep Sleep mit einem Timer lässt sich auch ein Deep Sleep per Interrupt umsetzen. Dabei. The Deep Sleep requires a simple hardware modification - a jumper is needed between the Reset Pin and and Pin D0 of the Wemos D1 mini. Pin D0 on the Wemos maps to GPIO_16 on the ESP8266 - this has a WAKE feature. During the Deep Sleep period, D0/GPIO_16 are held high. At the end of the Deep Sleep period, D0/GPIO_16 goes low, pulling down the.

Video: D1_mini_Examples/DeepSleep

Outdoor Wetterstation mit Wemos D1 und Deep Sleep

1. Arduino: I have a Wemos D1 (ver. 2015-08) and I am trying to get it to sleep. I've managed to get it generally up and running/got wifi to work etc, but the deep sleep function is beyond me. I tried connecting RX<-D0 pin to RESET, also tried with a 10k resistor. Neither worked. I then tried ~ Can't get deep sleep to work on Wemos D1 ESP826
2. ESPEasy ESP8266 D1 Mini Deep Sleep Verständnisproblem This is the only pin which can perform this function as the wake-up signal is sent from the RTC through D0/GPIO16 to RST. Gruß Thomas. Gespeichert wusa. New Member; Beiträge: 22; Antw:ESPEasy ESP8266 D1 Mini Deep Sleep Verständnisproblem « Antwort #3 am: 23 April 2020, 11:34:08 » Zitat von: Gisbert am 23 April 2020, 11:08:18. du.
3. i, Battery Shield und Solar Panel kommt noch ein DHT22 Shield dazu. Zur Datenerfassung wird dann auch eine WLAN Verbindung aufgebaut. Um eine möglichst lange Akkulaufzeit zu bekommen, soll auch noch ein Deep Sleep integriert werden
4. i/pro/lite. Après avoir balayé l'ensemble des shield wemos durant mes recherches j'ai décidé de vous faire un petit TOP 20.Pour ceux qui ne connaissent pas cette carte de développement, je vous conseil vivement l'article.
5. i pin D0 / GPIO16. Special function - timer reset when in deep sleep WeMos

Making the ESP8266 Low-Powered With Deep Sleep

1. I further noticed that connecting to Wifi after waking up from Forced Modem Sleep seems to take longer than after waking up from Deep Sleep: Elektronik, Software development. Post navigation. USB-Debugging mit Tablet von Point of View . The sleep states of the ESP32. 10 Replies to The sleep states of the ESP8266 Pingback: ESP8266, test du mode Deep Sleep, réveil (wake up) avec un.
2. Node Mcu works with deepsleep when connecting pins D0 and RST - goes to sleep and wakes up after the defined time. I connect the same pins, or D2 to RST on Wemos d1 r2 , it goes into deepsleep but doesn't wake up
3. Wemos D1 Mini - although you can use any similar esp8266 board you wish; DS18B20 temperature sensor - this is a really accurate sensor which allows the chaining of multiple sensors on a single data wire. 4.7k resistor - although anything from 1k should suffice. Breadboard/dupont jumper cables - optional for solderin
4. ESP8266 deep sleep. For a sensor node that wakes up and sends data from time to time, the most interesting is the deep sleep mode. On Arduino IDE one can put the ESP8266 in deep sleep mode by.
5. WeMos D1 Mini/ESP8266 Pin States On/Off/Deep sleep/Low side switch. The Problem. In my post about low power deep sleep for ESP8266 dev boards I ran into an issue with a low side switch where I was unable to wake up NodeMCU after the first sleep. The uptime is controlled by TPL5110 timer which has DRIVE and DONE pins. To power down ESP you signal HIGH on DONE pin and that disables DRIVE.
6. i seit etwa einem Jahr im Einsatz zusammen mit einem 1860 Lipo und einem Step up Regler auf 5V. Im deep sleep werden zusammen mit eimen BME280 etwa 0,7mA aus dem Aku gezogen. Auf der 5V Seite sind es dann etwa 0,4mA Wemos D1
7. During debugging or setting up, command out the ESP.deepsleep() to have Serial readout continually. As always, the full code to upload to ESP8266 is hosted here . Remember to put on the jumper between RST and D0/GPIO16 for triggering a wake up after a period of deep-sleep. Now, time to upload the code using Arduino IDE to the ESP8266

ESP8266 Deep Sleep Tutorial - Akkubetrieb für deine Projekte

1. It would only wake up when the switch was activated, and only for the time taken to log on to my WiFi and send the email. As soon as it had done this (about 10 seconds - even less with a static IP), it would go back to sleep. The deepSleep function in the ESP is: ESP.deepSleep([microseconds], [mode]) (For amateurs like me, ESP.deepSleep(sleepTimeS * 1000000) The first thing to note is that.
2. i series] Get started with Arduino [D1/D1
3. The most widely used ESP8266 boards are the ESP-01, ESP8266-12E NodeMCU Kit, and the Wemos D1 Mini. For a comparison of these board, you can read this guide: ESP8266 Wi-Fi Development Boards comparison. ESP8266-01 Pinout. If you're using an ESP8266-01 board, you can use the following GPIO diagram as a reference. ESP8266 12-E NodeMCU Ki
4. // Wemos D1 Mini pro development board. // DS18B20 - Digital Temperature sensor // Deep sleep function included for increasing battery life. // Remember 4.7K Ohm Pull-up resistor between the sensors VCC wire and the DATA wire. // In order for the controller to wake up from Deepsleep there needs to be a connection between the RST pin and the D0 pin on the board. // Include required.
5. ESP-WROOM-02のスリープ機能は、3つのスリープモード（「Modem Sleep」「Light Sleep」「Deep Sleep」）があります。 「Deep Sleep」への移行とボタン押下による復帰についてまとめます。 ESP.deepSleep() 関数で「Deep Sleep」へ移行します。 RESETピンは、HIGH電圧にプルアップしておき、 RESETピンに、LOW電圧が入力さ.
6. Der Deep Sleep funktioniert so, als ob man den Reset Taster betätigt oder die interne Watchdog zuschlägt oder den Wemos einschaltet, d.h. die Setup Prozedur und alles weitere wird durchlaufen, solange bis das Programm wieder auf ein Deep Sleep trifft. Zwischen zwei Deep Sleeps werden also keine Daten zwischengespeichert, es sei denn man legt Daten im RTC oder Flash ab (wie weiter vorne.
7. WAKE_RF_DISABLED = 4 // disable RF after deep-sleep wake up, just like modem sleep, there will be the smallest current. 直後のdelay命令は、すぐにDeep-Sleepモードに突入できないので、次の行に命令を書いておくと実行されてしまいます。それを防ぐ為に、ダミーのdelay命令を入れて、Deep-Sleepモードに突入するための時間を稼い.

Wemos D1 mini pro, DHT22 und esp

All'avvio del modulo Wemos D1, il nostro codice svolgerá le funzioni principali, ovvero: si collega al WiFi, apre la connessione con il broker MQTT, colleziona il dato di temperatura interrogando il sensore BME280, invia il pacchetto al topic prescelto e va in deep-sleep mode per 30 secondi, dopodiché si auto-resetterá. Con il reset questo ciclo verrá ripetuto tante volte quanto la. Consumo modo ESP8266 deep sleep Wemos D1 Mini Las grandes diferencias de estas tres placas las encontramos en el modo ESP8266 deep sleep ya que se consiguen consumos algo dispares. Esto es debido a que la placa Wemos D1 Mini clon y Wavgat utilizan el regulador de tensión 4A2D When pin 7 is high then the power board outputs 5V to the D1 Mini Pro. The 3V3 regulator on the D1 Mini Pro then powers the chip. Current consumption is just over 4uA when the power board is connected, so it adds about 1uA, as indicated in the regulator datasheet. * The Wemos starts up and flashes its LED, but I don't have microPython loaded. When the ePulse board is in deep sleep it only consumes between 25uA (at 3V3) and 35uA (at 12V). Most ESP32 and ESP8266 board consume around 100 - 130uA. This low sleep consumption is perfect for applications where the device sleeps most of the time and only wakes up from time to time to complete a task. For instance, a WiFi remote control for home automation can sleep until the user presses.

This board provides solid connection between Wemos D1 mini (ESP8266) and 2.4 TFT ILI9341 XPT2046 SPI Display (TJCTM24024-SPI). The main goal is to build cheap wi-fi enabled display with touch interface for use in various IoT projects. Display communicates with ESP8266 via SPI (display, touch and SD card reader). Displays interrupt is connected do D0 pin allowing for waking up ESP8266 from. Find Deals on Wemos D1 in Computers on Amazon For connecting the BMP180 to Wemos D1 mini see this post. The Wemos will enter in sleep mode and every 10 minutes will wake and log the data to cloud. Don't forget to connect the RST pin to D0 to activate the deep sleep. The 5V to 3V3 on the Wemos is always powers so there is some energy lost on it but is ok. After one day the graph is looking like this: Total cost: EUR 14. [ EDIT 1 ] 5 days. For connecting the BMP180 to Wemos D1 mini see this post. The Wemos will enter in sleep mode and every 10 minutes will wake and log the data to cloud. Don't forget to connect the RST pin to D0 to activate the deep sleep. The 5V to 3V3 on the Wemos is always powers so there is some energy lost on it but is ok // an average of 20mA with a Wemos D1 mini delay(5000); Serial.println(waking WiFi up, sleeping 5s); WiFi.forceSleepWake(); is below the safe threshold, the ESP8266 goes into deep sleep for as long as it can. Then it will wake up and go back to deep sleep until the battery is recharged. Please observe that there will be other components (sensors, etc.) that will still drain power from. This way ESPEasy will go back to sleep immediately when it cant connect. Examples of Battery Life. Minimalist ESP (without voltage regulator) to lithium thionylchloride battery (3.6V 2600mAh); One measurement per hour -> lifetime 1.25 years WeMos D1 mini to 3x AA battery (2500mAh); One measurement per hour -> lifetime 0.75 year