Open Source Hardware ESP32-POE board now has new version with 3000VDC galvanic insulation

ESP32-POE-ISO

ESP32-POE is one of our best selling boards, it’s low cost less than EUR 18 in single quantity and allow you to make IoT sensor network with existing Ethernet POE infrastructure.

The end node can provide up to 4W combined on +5V and +3.3V output to external components and circuits which is more than enough for most applications.

To simplify the design and lower the cost ESP32-POE has no galvanic insulation.

Some customers asked can we add such insulation – sure it’s possible, meet the new ESP32-POE-ISO. So here above on the picture you see first samples of the insulated POE board.

We wanted to keep is as similar to existing POE as possible, as you can see the new board is just 15 mm longer and keep same pinout on the connectors, allowing ESP32-POE to be directly replaced with ESP32-POE-ISO.

What are the benefits? Now you can safely debug your ESP32-POE-ISO while connected both to computer with USB cable and Ethernet POE cable.

For the insulation we use 2W DCDC converter with 3000VAC insulation. The available 400mA are split between ESP32 and external circuit and in most application will be sufficient.

The price of ESP32-POE-ISO is EUR 23.95 (only EUR 6 more than non-isolated ESP32-POE) in single quantity.

If 2W are not enough, we can produce same board with 3W DCDC which allow 600mA current, but the price will rise with another 3 EUR to EUR 26.95 in single quantity.

Seven new version of ESP32 modules are add to our web shop

esp32-wroom-32-01-2

We add to our web shop seven new ESP32 modules:

ESP32-WROOM-32D-4MB – this is equal to used by us ESP32-WROOM-32, it uses D0WD instead of D0WDQ6 which is with smaller size and Espressif recommend it for new designs.

ESP32-WROOM-32D-16MB  has 16MB of Flash

ESP32-WROOM-32D-4MBHT is High temperature +105C module for demanding applications.

ESP32-WROOM-32U-4MB is with U.FL connector for external antenna

ESP32-WROOM-32U-16MB has 16MB of Flash

ESP32-WROOM-32U-4MBHT is High temperature +105C module for demanding applications.

ESP32-WROVER-4MB has 4MB Flash and 8MB of PSRAM.

The high temperature modules are still not in stock as Espressif manufacture these now, but all others are in stock.

We just uploaded on Youtube video for eduArdu features and how to install and use the Arduino examples from GitHub

eduArdu OSHW educational board is in stock

eduArdu-1

Right before Christmas we got eduArdu in stock!

All hardware sources and software libraries and demo codes are now on GitHub

If you come to our workshop this Saturday (15/12/2018) you may download and install in advance Arduino IDE, Snap4Arduino and the demo codes for eduArdu.

We made another pack of eduArdu named eduArduQS (quick start), two servo motors, LiPo1400mA battery, USB-micro cable, and pack of 7 cables with crocodile clamps for makey-makey like experience.

eduArdu-QS

First Steps with eduArdu workshop on 15th of December!

eduArdu

On December 15th together with our friends from TuxCon we will make workshop with our new educational board eduArdu in Olimex training building.

If you want to be part of this even come and join us, the event is free to participate.

We will show you how to use all eduArdu features with Arduino and Snap.

Be prepared to play games with fruits and people-touch, to make animations with LED matrix, to generate music, detect intruders with the PIR sensors, to switch on and off air conditioners and even create music instruments!

Educators may apply for free board which to receive at this event.

 

eduArdu update

eduArdu

I blogged about eduArdu the EUR 15 educational Arduino based board at the beginning of October, the plan was to have prototypes in 2 weeks which unfortunately didn’t happen, anyway now we have first prototypes built and work on the software support.

eduArdu2

We are preparing Arduino libraries for all features:

  • scrolling text and writing images on the LED8x8 matrix
  • playing single tone and multi tone sounds on the buzzer
  • measuring the temperature with the on-board sensor
  • measuring the light with LDR
  • detecting movements with the PIR sensor
  • reading distance to objects with Ultrasound sensor
  • reading the Joystick status
  • driving servo motors connected to the two  connectors
  • reading audio signals via microphone
  • driving RGB and the red LEDs on board
  • reading resistance on the 6 GPIOs to implement Makey-makey
  • receive IR remote commands and transmit IR codes to control air conditions, TVs etc.

TuxCon is preparing free Arduino day in “Prof. Asen Zlatarov” school in Parvomay on December 15th, where volunteers will teach students how to program in Arduino and make the first steps in programming and electronics.

TuxCon is non for profit organization and does all events free of charge aiming to spark interest in kids for IT technologies. If you want such event to be provided in your school please write in TuxCon facebook group: https://www.facebook.com/tuxcon.mobi/

Scratch gets lot of attention for enabling even very small kids to program with visual blocks. We though it would be good eduArdu to support it and add blocks to Scratch which to allow embedded board programming with Scratch.

I’ve tested Scratch 1 many years ago, it was relatively easy to add hardware board support at that time via Python web server running jango and communicating with Arduino fermata. It’s obsoletenow and in maintenance mode i.e. no bug fixes and developments.

Scratch 2.0 was re-writen in Action script and uses Adobe Flash technology for animation, really bad choice as we did try to use it several times with Linux and never succeed. This version is also in maintenance mode now.

So we moved to test Scratch 3.0 which is re-written in HTML5 and looks great, but unfortunately they closed the extensions for boards and now support officially just Microbit and Lego. Probably this is their way to get some money for their efforts. There are issues open from people who use other boards and wanted to migrate their old projects to 3.0 posted almost year ago without any action, so we really are puzzled after all this popularity they got, this is the best way to shoot themselves in the leg.

Fortunately there are many alternatives to Scratch, like Snap

It’s totally open for adding blocks and has tens of GitHub projects adding blocks for different robot platforms, Arduino, Raspberry pi etc embedded stuff.

So we will add support for eduArdu in Snap too.

New products in stock Metal boxes for ESP32-EVB-EA and ESP32-GATEWAY-EA

BOX-ESP32-EVB-EAd

BOX-ESP32-EVB-EA is metal box painted with polymer black paint suitable for ESP32-EVB-EA IoT board. It has opening for USB, Relay terminals, power jack, SD-card, IR LED and receiver, Ethernet, RESET and USER buttons and LiPo battery connector.

BOX-ESP32-GATEWAY-EA

BOX-ESP32-GATEWAY-EA is metal box with polymer black paint suitable for ESP32-GATEWAY-EA IoT board. It has openings for USB, Ethernet, SD-card, RESET and USER buttons.

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