#esp32 wrover

[gantengpermanen]

Nappy Pins in Action ESP32 WROVER-E Blink Arduino early stage diy balsa wood nappy pins esp32 breakboard arduino blink test gpio2

[campuscomponent]

Looking for a good deal on esp32 wrover module? According to Espressif, the ESP-WROVER-32 is a powerful, generic WiFi-BT-BLE MCU module that targets a wide variety of applications ranging from low-power sensor networks. Explore a wide range of the best esp32 wrover module on Campus Componentto find one that suits you! Visit https://www.campuscomponent.com/products/esp32-wroom-32d-4mb-wi-443-d/2208614000001840752

[techtutorialsx]

ESP32 low.js: Hello World

ESP32 low.js: Hello World

On this tutorial we will check how to create a simple “Hello World” application using low.js and the ESP32.

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[draegerit]

ESP32 WROVER E with camera adapter for OV2640 lens Without SD-card slot but a huge count of available pins. #esp32 #esp32cam #wrover #microcontroller #maker #diy #tech #techy #technology #electronic #components #draegerit (at Stefan Draeger Software) https://www.instagram.com/p/CfmfphaLJqE/?igshid=NGJjMDIxMWI=

[bitstream24]

ESP32 Starter and Development Kits for Building Bluetooth and WiFi Enabled IoT Devices

The ESP32-WROVER is a powerful small controller with an onboard camera, Wi-Fi and Bluetooth.

This kit helps you learn and use ESP32-WROVER with its components and tutorials.

https://copperhilltech.com/blog/esp32-starter-and-development-kits-for-building-bluetooth-and-wifi-enabled-iot-devices/

[sucityuiarew]

ESP-01 ESP32-WROVER-Bit WROOM-32U Wireless WiFi+Bluetooth dual-core CPU 25q16

ESP-01 ESP32-WROVER-Bit WROOM-32U Wireless WiFi+Bluetooth dual-core CPU 25q16

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Just For Today

Click Here To Visit The Shop

N€W ESP-01 ESP32-WROVER-Bit WROOM-32U Wireless WiFi+Bluetooth dual-core CPU 25q16

[ryhcafrejau]

ESP32-WROVER-B/ESP32 WROVER-IB 2.4G WiFi Bluetooth module SPI wireless Espressif 4MB Flash ESP32-WROVER-B/ESP32-WROVER-IB

ESP32-WROVER-B/ESP32 WROVER-IB 2.4G WiFi Bluetooth module SPI wireless Espressif 4MB Flash ESP32-WROVER-B/ESP32-WROVER-IB

ESP32-WROVER-B/ESP32 WROVER-IB 2.4G WiFi Bluetooth module SPI wireless Espressif 4MB Flash ESP32-WROVER-B/ESP32-WROVER-IB

Price

5.57 Catch me HERE

[nupehtote]

ESP32-WROVER-B/ESP32 WROVER-IB 2.4G WiFi Bluetooth module SPI wireless Espressif 4MB Flash ESP32-WROVER-B/ESP32-WROVER-IB

ESP32-WROVER-B/ESP32 WROVER-IB 2.4G WiFi Bluetooth module SPI wireless Espressif 4MB Flash ESP32-WROVER-B/ESP32-WROVER-IB

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Just For Today

Click Here To Visit The Shop

N€W ESP32-WROVER-B/ESP32 WROVER-IB 2.4G WiFi Bluetooth module SPI wireless Espressif 4MB Flash ESP32-WROVER-B/ESP32-WROVER-IB

[lihojonilki]

DSTIKE IPEX SMA antenna adapter ESP-07 ESP32 wrover

DSTIKE IPEX SMA antenna adapter ESP-07 ESP32 wrover

DSTIKE IPEX SMA antenna adapter ESP-07 ESP32 wrover

Price

1 Catch me HERE

[zosejekonioki]

LILYGO® TTGO T-Camera ESP32 WROVER & PSRAM Camera Module Data Cable

LILYGO® TTGO T-Camera ESP32 WROVER & PSRAM Camera Module Data Cable

LILYGO® TTGO T-Camera ESP32 WROVER & PSRAM Camera Module Data Cable

Price

1 Catch me HERE

[kitwallace]

Tree moisture meters

I had an interesting time last week attending the 4th Trees, People and the Built Environment (TPBE4) conference run by the Chartered Foresters.  Some interesting sessions and worthy sentiments but I didnt get any sense of urgency. 

A couple of the sessions addressed the use of technology in the urban forest.  For example Nadina Galle talked about the Internet of Nature and the application of Smart City thinking, a city-wide network of sensors using AI to make better decisions about deployment of resources.  GreenCityWatch have developed tools to create an inventory of urban trees using commercial high-resolution imagery and some open-source image analysis tools.  Treemania aims to provide a network of moisture sensors to alert council staff to the need to water newly planted trees.   

I have a love-hate relationship with these ideas.  On the one hand they too often seem like expensive, irrelevant and authoritarian structures, all bright and shiny to lure unsuspected city councils desparate to show they are doing something towards the climate emergency.  On the other hand, I’m a bit of a geek and love the idea of sensors to bring the life of trees to wider notice.   Moisture sensors also fit well with a planned platform to assist citizens to look after new trees, in particular 590 trees being planted in deprived areas of Bristol, part-funded by the Urban Tree Challenge Fund.

Treemania’s sensor seemed from the pictures to use a common capacitive moisture sensor. I thought a remote sensor could be based on a board I’ve planned to use on the boat for remote sensing of water level and battery state.  I’ve also been looking at it as a basis for a remote dendrometer. The board is an ESP32 with integrated GSM module, costing £15 or less.  GSM (2G) is expected to continue to be supported in the UK through to 2025.   Rui Santos has a great tutorial on using this board with Arduino code for just such a project.  A capacitive soil moisture sensor costs a few quid, a temperature sensor likewise.  The board has an integrated socket and charger for a 3.7v LiPo battery.  In use the sensor will only need to report at a very low frequency - maybe only a few times a day, and with the ESP deep sleep mode the device should run unattended for a month or more. Soak testing is underway.

Acquiring a suitable SIM is challenging.  Although mobile internet on a pay-monthly contract is down to £1 a Gb, minimum payment is around £10 a month. Given that only a Kb or so is used for a single  HTTP GET to transmit the data, the device needs only a few Mbs a month.  I found a couple of companies  specialising in IoT connectivity. The cheapest is ThingsMobile, based in Milan and the cost is more like £10 per annum.  Even here, the cost per Mb is 100s of times more expensive than your regular Pay monthly  sim.  It took ages to arrive but works fine and at E0.12 / Mb is pretty good.

So the bill of materials is:

TTGO T-Call ESP32 SIM800L board   

Capacitive Moisture Sensor

DS18B20 Waterproof Digital sensor

3.7v LiPo

waterproof container

Overall cost for the components should be under £40. 

Wiring is straightforward:  The moisture meter needs 3.3v power and an A2D pin  (ADC0) ; the thermometer is a one-wire interface needed a digital I/O pin (Pin25)  with a 4K7 pull-up resistor.  Rui also has a great tutorial on interfacing this sensor.  I got stuck for a while on this, not realising which GPIO pins supported I/O.  Accurate pin-out diagrams and the datasheet for the right variant of board are essential.   A small auxiliary veroboard wired directly to the ESP32 board handles these connections.  The ESP32 board is supplied with a simple aerial which worked fine.  A better quality aerial costs a few quid.

This is the current lashup

Rough sketch of wiring:  R is 4K7 

The Arduino script hard-codes the GPRS parameters, the HTTP parameters to use GET to send the data to the server and the sleep interval.  This code is on GitHub 

Periodic readings are sent to my server where they are logged and graphed and from where alerts can be generated.   A test harness only at present so nothing worth sharing yet.

Summary

The prototype is working.  The moisture sensor needs good waterproofing and seems a bit sensitive to placement.  The power draw of the GSM is quite high high during transmission.  I’m also running a WiFi version and of course its power draw is much less.    It would be nice if the Bristol LoRaWAN network was up and running but that seems to have gone very quiet. 

The main problem is with power.  This board includes a (very small) JST connector for a LiPo and a charger,  For a while it switched happily from USB power to battery and back without manual intervention.   LiPos are small and expensive however and I’m currenly experimenting with 18650 batteries which offer better storage/£ . 

References

T-Call pinout

ESP32-WROVER datasheet

TTGO T-Call on GitHub

[gantengpermanen]

Solderless Baby Safety Nappy Pins Bare Minimum Cheap DIY Breakout BOARD ESP32 WROVER E Experimental Prototype Arduino Espressif Systems ESP32 low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. Cheap DIY Breakout Board ESP32 WROVER-E Nappy Pins

[campuscomponent]

For sale: ESP32-WROVER-B wireless module, perfect for IoT applications. This powerful Wi-Fi module is designed to enable secure, low-power connectivity for a variety of devices, making it an ideal choice for smart home automation, industrial control, and other wireless applications. With its dual-core processor and integrated Wi-Fi and Bluetooth capabilities, the ESP32-WROVER-B delivers reliable, high-speed wireless connectivity in a compact form factor. Whether you're a hobbyist or a professional developer, this versatile wireless module is sure to meet your needs. Don't miss out on this opportunity to add the ESP32-WROVER-B to your project today! Visit Campus Component https://www.campuscomponent.com/products/esp32-wroover-4mb/2208614000001840948

[draegerit]

ESP32-CAM WROVER E

In diesem Beitrag möchte ich dir eine weitere ESP32-CAM vorstellen und zeigen, wie du diese programmierst.

Eine ESP32-CAM habe ich dir bereits im Beitrag Einrichten der ESP32-CAM und erster betrieb vorgestellt und auch gezeigt, wie du diese in der Arduino IDE programmierst.

Bezug der ESP32-CAM WROVER DEV

Die mir vorliegende ESP32-CAM habe ich recht günstig über aliexpress.com für knapp 7 € zzgl. Versandkosten erstanden. Du findest die coole ESP32-CAM auch auf amazon.de für knapp 35 € als Set mit diversen Sensoren / Aktoren. Lieferumfang Zum Lieferumfang der ESP32-CAM gehört neben dem Mikrocontroller noch ein kleine 66° Kameralinse vom Typ OV2640.

Anschluss der ESP32-CAM

Der Anschluss an den Computer erfolgt über eine Micro-USB Schnittstelle. In meinem Fall war kein passendes Kabel dabei (jedoch im verlinkten Amazon Produkt ist es enthalten). Im Geräte-Manager von Microsoft Windows 10 wird der Mikrocontroller als "USB-SERIAL CH340" angezeigt.

Geräte-Manager von Windows 10 mit angeschlossener ESP32-CAM Während des Betriebs der ESP32-CAM leuchtet eine kleine grüne SMD LED.

Technische Daten des ESP32 WROVER E

Hier nun ein kleiner Auszug aus den technischen Daten des ESP32 WROVER E. MicrochipESP32-D0WD-V3 Xtensa 32bit LX6Taktgeschwindigkeit240 MHzROM448 KBSRAM520 KBSRAM (in RTC)8 KBPSRAM8 MBSPI flash4 MBWiFiProtokolle - 802.11 b/g/n (802.11n bis zu 150 Mbps)Frequenzbereich - 2412 ~ 2484 MHzBluetoothProtokolle - Bluetooth v4.2 BR/EDR und Bluetooth LE (Low Energy)FeaturesUART, SPI, I²C, LED, PWM, Motor PWM, I²S, IR, Puls Counter, GPIO, kapazitiver Touch Sensor, ADC, DAC, TWAI (Two-Wire Automotive Interface), kompatibel mit ISO11898-1 (CAN-Bus Spezifikation 2.0)Hall SensorSpannungsaufnahme3.0 V ~ 3.6 VStromaufnahme500 mABetriebstemperatur-40 °C ~ 85 °C Im englischen Dokument ESP32­WROVER­E Datasheet findest du eine ausführliche Liste mit den technischen Daten zum ESP32 WROVER E.

Programmieren in der Arduino IDE

Das ESP32-CAM Beispiel aus der ESP32 Bibliothek beinhaltet eigentlich auch die Konfiguration für das vorliegende Modell, jedoch ist das Kompilat 10 % größer als der verfügbare Speicher des ESP32. text section exceeds available space in boardDer Sketch verwendet 1431461 Bytes (109%) des Programmspeicherplatzes. Das Maximum sind 1310720 Bytes. Globale Variablen verwenden 65344 Bytes (19%) des dynamischen Speichers, 262336 Bytes für lokale Variablen verbleiben. Das Maximum sind 327680 Bytes. Sketch too big; see https://support.arduino.cc/hc/en-us/articles/360013825179 for tips on reducing it. Fehler beim Kompilieren für das Board ESP32 Wrover Module. Auf der Seite https://freenove.com/fnk0060/ findest du eine ZIP-Datei mit allem, was du benötigst, um den ESP32 CAM vom Typ WROVER E zu programmieren und unter anderem ist dort auch eine komprimierte Version enthalten. Zum einen hat der vorliegende Mikrocontroller kein SD-Karten Slot und somit benötigen wir diese Konfiguration inkl. Bibliothek nicht.

Webinterface

Bevor du das Beispiel aus dem Ordner "Freenove_ESP32_WROVER_Board-mainCSketchesSketch_05.1_CameraWebServerSketch_05.1_CameraWebServer.ino" auf den ESP32 speicherst musst du lediglich die SSID & das Passwort von deinem WiFi Netzwerk eintragen. const char *ssid_Router = "********"; //input your wifi name const char *password_Router = "********"; //input your wifi passwords Während des Uploads musst, du, wenn die Ausgabe mit den vielen Punkten erscheint die Taste "EN/RST" betätigen und der Upload wird ausgeführt. Nachdem erfolgreichen Upload kannst du im seriellen Monitor der Arduino IDE die IP-Adresse des Mikrocontrollers ablesen. Über diese IP-Adresse kannst du das Webinterface erreichen und einen Stream deiner ESP32-CAM betrachten und auch Bilder speichern.

Webinterface der neuen ESP32-CAM von 2022

Vergleich mit dem Vorgängermodell

Wie bereits erwähnt habe ich dem Vorgängermodell bereits einige Beiträge gewidmet und auch gezeigt, wie du die Bilder / den Videostream per Python abgreifst und speichern kannst. Da das neue Modell sehr ähnlich funktioniert, kannst du die Beiträge auf den Mikrocontroller adaptieren.

ESP32-CAM Modelle Was zunächst auffällt ist, das die neue ESP32-CAM ohne SD-Card Slot und LED Blitz daherkommt, jedoch bietet diese deutlich mehr GPIO Pins und somit kann man diese recht einfach nachrüsten. Zusätzlich bietet die neue ESP32-CAM vom Typ WROVER E einen onboard FTDI Chip CH340 welcher durch die vorhandene Micro-USB Buchse ohne ein zusätzliches, externes FTDI Modul t die Programmierung ermöglicht. Beim Vorgängermodell wurde dieses mit einem speziellen Board gelöst, auf welches der Mikrocontroller gesteckt wurde.

Vergleich der technischen Daten

Hier ein kleiner Vergleich der technischen Daten der beiden Mikrocontroller. ESP32-CAMESP32 WROVER E CAMMicrochip32Bit Dual Core CPU  ESP32-D0WD-V3 Xtensa 32bit LX6Taktgeschwindigkeit240 MHz240 MHzPSRAM4 MB8 MBSPI flash4 MB4 MBWiFi802.11 b/g/n/e/i802.11 b/g/n (802.11n bis zu 150 Mbps)BluetoothBluetooth v4.2 BR/EDR und Bluetooth LE (Low Energy)Bluetooth v4.2 BR/EDR und Bluetooth LE (Low Energy)FeaturesUART, SPI, PWM, GPIO, kapazitiver Touch Sensor, ADC & DACUART, SPI, I²C, LED, PWM, Motor PWM, I²S, IR, Puls Counter, GPIO, kapazitiver Touch Sensor, ADC, DAC, TWAI (Two-Wire Automotive Interface), kompatibel mit ISO11898-1 (CAN-Bus Spezifikation 2.0)Auszug aus den technischen Daten der ESP32-CAMs Read the full article

[pcbway]

MicroByte

#CrowdSupply What is MicroByte?MicroByte is a hand-held, open-source retro-console, which can execute games from NES, GameBoy, GameBoy Color, Game Gear, and Sega Master System. It owns a powerful battery life of up to 6/7 hours with a colorful, high pixel density 1.3" IPS screen.MicroByte is controlled by an ESP32-WROVER E microcontroller module. And it is fully compatible with Arduino IDE.It maybe the tiniest hand-held console you have ever seen -- The entire console measures just 78 x 17 x 40 mm (3.07 x 0.67 x 1.57 inches). It seems a great choice to bring it when you are going out.

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-Learn more: http://bit.ly/3c8pyrB -