PWR-SWITCH is optically isolated EU style power load switch for up to 3500W, 230VAC/16A and can be driven with any microcontroller, Arduino, EPS32, or Linux computers directly with 3-24V

PWR-SWITCH hides the high voltage problems from the Arduino, ESP32, Raspberry Pi, Beaglebone, OLinuXino developers. It has 1500VAC optically isolation and can drive high voltage up to 230VAC / 16A loads safely.

To switch On or Off the loads from 3 to 24VDC can be used, so you can drive the loads with any microcontroller only 1mA is necessary to trigger the switch.

PWR-SWITCH is with EU stype plug and receptacle, so to use it in US or in UK you will need some of these:US to EU adapter, EU to US adapter or UK to EU adapter.

 PWR-SWITCH has CE-EMC and LVD certification.

Green LED show the switch status.

Open Source Software OpenMQTTGateway got initial support for Open Source Hardware ESP32-GATEWAY

OpenMQTTGateway project aims to concentrate in one Gateway different technologies like Bluetooth, LoRa, IR, lagacy RF 433/315, GSM/GPRS based devices and connect them with OpenHAB, Home Assistant, Jeedom, FHEM, Domotic etc platforms via MQTT protocol.

The list of the supported devices is long.

With recent PR initial support for ESP32-GATEWAY is add.

How to configure and use ESP32-CAM with Arduino IDE and Linux

ESP32-CAM is small low cost WiFi camera with OV2460 2Mpix sensor. It allows you to stream video and even to perform some small image filterings and face detection / recognition.

Unfortunately the AI Thinker vendor trying to keep cost as low as possible didn’t include USB programmer in it so the setup is a bit odd.

What do you need to play with ESP32-CAM ?

You need the camera of course and some cables and USB to serial converter which also provide enough 3.3V source to power the camera.

In this example we will use ESP-PROG-C which comes with set of cables and USB-CABLE-micro-1.8M

Step.1

Install Arduino IDE

Please go to arduino.cc and download and install latest Arduino IDE.

Step.2

Linux and CH340

CH340 Linux drivers has bad PLL settings for all Linux kernels before 5.5.

If your system happen to be with Linux Kernel before 5.5. here is the GitHub repository with the patch to install.

If you do not have this patch CH340 will work, but will not be able to communicate at speed over 115200 bps, with the patch up to 2Mbps communication is possible.

Step.3

Wire cables:

You need to connect ESP32-CAM and ESP-PROG this way:

ESP32-CAM GND —-> ESP-PROG GND

ESP32-CAM 3.3V —-> ESP-PROG 3.3V

ESP32-CAM U0T —-> ESP-PROG RXD

ESP32-CAM U0R —-> ESP-PROG TXD

For firmware uploading you need one more connection, which is necessary ESP32 to go in Bootloader mode:

ESP32-CAM IO0 —-> ESP32-CAM GND

Step.4

Configure Arduino for ESP32-CAM

Run Arduino. In the Files-Preferences add:

https://dl.espressif.com/dl/package_esp32_index.json

In Tools-Board-Board Manager search for ESP32 and install it:

Exit Arduino and Run it again so it loads new board data. From File-Examples select ESP32-Camera-CameraWebServer

In select camera model uncomment CAMERA_MODEL_AI_THINKER and comment all other:

Then enter SSID and PASSWORD for your WiFi router.

In Tools-Board select : ESP32Wrover Module

Speed 921600

Flash Frequency 80Mhz

Flash Mode QIO

Partition Scheme: Huge app

Port: the port where your ESP-PROG USB Serial is connected it may be „ttyUSB0“ if you are running Linux or COMxx if you run Windows

Compile and see if there are no errors:

Then Press RESET button on ESP32-CAM, release it and hit Upload button on Arduino IDE.

If you get this error under Linux:

This means that the access to ttyUSB0 is not enabled for your user and you have to run in terminal

$ sudo chown youruser /dev/ttyUSB0 

Where „youruser“ can be seen and try again.

If everything is OK you will see this picture:

Now you have to disconnect ESP32-CAM IO0 and GND and press reset. In serial monitor you will see this message:

when you open http://192.168.100.109/ you will see

Now you can play with the different settings!

New Open Source Hardware board ESP-PROG allow you to program any Espressif device and can be used as general purpose USB-Serial converter

Created with GIMP

ESP-PROG is USB to Serial converter but beside the Serial TX and RX signals it also can power the target with +5V up to 0.5A or 3.3V up to 0.5A and have two additional signals which make programming automatic RESET (EN) and BOOT enable.

ESP-PROG-C includes all necessary cables for the ISP programming – 7 pcs jumper wires female to female and 6 pin ICSP cable.

ESP-PROG is based on CH340T IC and has drivers for Linux, Windows, MACOS, Android with up to 2 Mbps speed.

New open source hardware board ESP32-S2-DevKit-Lipo breaks our internal record for ESP32 low power consumption

Screenshot from 2020-05-18 11-46-43

ESP32-S2 is new SOC from Espressif which has only WiFi connectivity but has much more GPIOs available than ESP32 and ESP8266, also it has USB native connection which opens lot of new possibility.

We already sell Espressif’s Saola-1R board which has ESP32-S2-WROVER module, but it’s not designed for battery operation and low power as uses general purposes LDOs and has no battery connection.

This is something we wanted to improve – we designed board with same module but add LiPo charger and now our ESP32-S2-DevKit-LiPo can operate on LiPo battery even when there is no external power supply, but on top of this we kept the same PCB dimensions and ESP32-S2-DevKit-Lipo is drop-in replacement for ESP32-S2-Saola-1R. We use same module with 2MB RAM and 4MB Flash so once you develop with Saola you can move to ESP32-S2-DevKit-Lipo and make your projects battery operated.

The new ESP32-S2-DevKit-Lipo uses ultra low power power supply circuit which makes current consumption during sleep only 6uA  (4uA of them are due to the battery measurement resistor divider) this is 10 times less than our other boards.

Prototypes are build now and we run production and will have these in stock by the beginnings of June.

Limited Quantity of the new ESP32-S2 multimedia and breadboard development boards from Espressif are in stock!

ESP32-S2-Kaluga-1

ESP32-S2 is new SOC from Espressif which is supposed to solve some issues with current ESP32 and ESP8266 SOC chips.

First issue S2 solves is the small number of GPIOs ESP32 has, specially if you want to use the Ethernet interface. ESP32-S2 comes with 37 GPIOs in nice 5x5mm QFN28 package. The SOC is single core 240Mhz processor with build in USB interface. The Bluetooth and Ethernet interfaces are removed.

Pricewise ESP32-S2 is cheaper than ESP32 but a bit more expensive than ESP8266.

ESP32-S2-WROOVER module comes with 2MB of RAM and 4MB of Flash and will be able to replace ESP8266 everywhere while having enough resources to run secure SSL connection.

Two development boards are available for ESP32-S2.

ESP32-S2-Saiola-1R is the low cost entry breadboard experimental board which includes ESP32-S2-WROVER module, USB programmer, RGB LED and couple of buttons.

It has all GPIOs exposed for experiments:

esp32-s2-saola-1-v1.2-annotated-photo

The second board is ESP32-S2-Kaluga-1 which is multimedia board with camera, microphone, audio codec, 3.2″ LCD with touch screen, speaker:

ESP32-S2-Kaluga-1b

The kit comes with Camera module:


ESP32-S2-Kaluga-1c

and touch sensor plate:

ESP32-S2-Kaluga-1e

Kaluga multimedia board is so new that still not have page at Espressif site, so all info is in their GitHub repository.

Open Source Hardware IoT boards ESP32-EVB and ESP32-GATEWAY now are available in industrial grade -40+85C

esp32-gateway-gpios

ESP32-EVB and ESP32-GATEWAY are two very popular IoT boards which are supported both by Arduino IDE and Espressif SDK.

Now we stock ESP32-EVB-IND and ESP32-GATEWAY-IND which are functionally same boards, but all components used in them work in industrial temperature grade -40+85C.

ESP32-WROVER-DevKit-Lipo Open Source Hardware board with 4MB Flash and 8MB PSRAM is in stock

ESP32-WROVER-DevKit-Lipo

ESP32-WROVER-DevKit-LiPo is new open source hardware board which uses ESP32-WROVER modules with 4MB Flash and 8MB PSRAM.  It keeps same layout as ESP32-DevKit-C and ESP32-DevKit-Lipo, so boards made for these modules will work drop in.

The only difference between ESP32-WROOM and ESP32-WROVER modules beside the more RAM is that WROVER module has no GPIO16 and GPIO17 which are used internally and not connected to the outside pins.

ESP32-DevKit-LiPo Open Source Hardware board GPIOs table and power consumption testings – in deep sleep the board uses only 65 uA

ESP32-DevKit-LiPo-GPIOs

Our ESP32-DevKit-LiPo board is pin to pin compatible with Espressif ESP32-DevKit, but we add to it LiPo battery charger, so the board can operate from LiPo battery like BATTERY-LiPo1400mAh

High resolution of the above GPIO map is available here.

Having LiPo backup power supply allow WiFi/BLE connected handheld devices to be created with ESP32-DevKit-LiPo.

In our new Revision B of this board which is on prototype stage:

If PWR_SENS_E1 jumper is shorted your software can monitor if external power supply is attached or you work on battery.

If BAT_SEND_E1 jumper is shorted your software can read battery voltage.

When operating on battery low power is necessary, so we optimized the design of Revision. C to reduce power consumption as much as possible and here are the results:

ESP32-DevKit-LiPo powered by Li-Po battery (no LED)

  • normal mode: 35mA +/-10%
  • deep sleep mode: 0.065mA +/-10%

ESP32-DevKit-LiPo powered by 5V USB (LED up)

  • normal mode: 35mA +/-10%
  • deep sleep mode: 2mA +/-10%

 

ESP32-ADF SIP phone example is uploaded on GitHub

esp32-adf-sip3

ESP32-ADF Espressif Audio Framework demo board SIP phone example is on Guthub.

Sorry for the delay, but Espressif changes their ESP-IDF so frequently that we have to update this example again and again to follow their changes.

 

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