ESP32-WROVER-KIT is back in stock

esp32-wrover-kit

The popular ESP32-WROVER-KIT is back in stock!

 

EDIT: The new batch has ESP32-WROVER module on it:

ESP32-Wrover-2

Instead of CH340 USB to Serial now it have FT2232HL wich implements two Serial channels one for programming one for debugging.

Also as these were assembled end of May they contain WROVER modules with 4MB of RAM and ESP32 chip REV.1.

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TuxCon 2017 full agenda is published

15241999_541171392758646_9152584434294422876_nJune 3rd
First day will be in Technical University Plovdiv and includes presentations of interesting open source projects and the first Bulgarian Home retro computer Pravetz 8D.
Guest lecturer is Igor Pečovnik who will talk for the popular Armbian GNU/Linux distribution  for Allwinner SoCs.
There will be also two booths for OpenSUSE and Retro computers.

10:30 – 10:50 Opening speech by our hosts from Technical University
11:00 – 11:30 Quality Assurance according to Einstein, Alex Todorov
11:40 – 12:10 Network monitoring by using netflow, Radi Dochev
12:20 – 12:50 dnsdist, Petko Angelov
13:00 – 13:30 Open Source Computer vision for your projects, Marian Marinov
13:30 – 14:00 Lunch
14:00 – 14:50 First Bulgarian HomeComputer – Pravetz 8D, George Dramchev
15:00 – 15:50 Armbian GNU/Linux distribution, Igor Pečovnik
16:00 – 16:30 Tracing python applications, Nikolay Stoizev
16:45 – 17:45 Lightning talks x5 minutes
17:45 – 18:00 Quiz and closure

Traditionally at Saturday evening after the presentation we will continue with non-formal beer event at near by restaurant “Yuzhen Polah 2” at Bulair St 32.

Sunday June 4th we start at 11:00 in Olimex train building at 2 Pravda St.

We will have brief presentation about how to solder and basic knowledge for the electronic components, then we will solder the specially made for TuxCon Kitty badge and learn how to program it with Arduino IDE. 100 badges are ready as kits and will be given away free of charge, but we have limited number of soldering irons, so if you have one bring it to the event 🙂
Members of the local Radio club will install huge antenna at our backyard and have fun like last year.
radio
TuxCon is totally free event made by volunteers in partnership with Technical University in Plovdiv. No need for registration, no entry fees.
Looking forward to see you this weekend in Plovdiv 🙂

TuxCon Open Source Hardware and Software Conference is this weekend in Plovdiv

TUXCON-1

This weekend is TuxCon, conference about open source hardware and software in Plovdiv, Bulgaria.

In Saturday June 3rd the conference will begin at 10.30 o’clock in Technical University in Plovdiv. There are seven interesting lectures and Lighting talks.

Our special guest this year is Igor Pečovnik who will present Armbian – special Linux distribution for embedded ARM SoCs. Armbian is well known in Allwinner community as it supports almost every board with Allwinner ARM SoCs.

In Sunday, June 4th we will have the traditional Hardware hackathon at Olimex training building.

This year our main street is under heavy reconstruction so prepare for the fun to pass by the border of the near gipsy ghetto to may come to us 🙂

 

TuxCon Kitty, it’s a badge with buzzer, LEDs and shape of Kitty, which play songs when you touch it nose.

TUXCON

The PCB is programmable by Arduino IDE and you can compose your own melody.

So far we have NyanCat, Mario Bross and Star Wars ready for upload.

ESP32-EVB in stock!

ESP32-EVB

ESP32-EVB is finally in stock 🙂

The size increased to 75 x 75 mm and these are the features:

  • ESP32-WROOM-32 CE/FCC approved module
  • Bluetooth LE, WiFi connection
  • Wired 100Mb Ethernet connector
  • micro SD card
  • two RELAYS 250VAC/10A (125VAC/15A) with LED status
  • CAN interface
  • IR remote control receiver and transmitter 5 m  range
  • RESET and USER buttons
  • USB micro connector for programming and power supply
  • LiPo battery charger and step up converter with 4 STATUS LEDs
  • Power jack 5V power supply

This is great board for IoT as has access to many interfaces: Ethernet, CAN, BLE, WIFI. The relays can switch power appliances. With the IR remote control you can control any device with IR like TVs, VCRs, Air conditioners, Sound amplifires, CATV etc.

 

ESP32-EVB now get much better

ESP32-EVBESP32-EVB revision A was made quick and has too many errors 🙂 some were due to the non very clear documentation, like that we assumed that all ports could have internal pull-ups but  when we try to write the software we found that the GPIOs we used for the buttons has no such. Other were done by our engineer negligence.

We had small 100 pcs series from Revision A, but after all issues we encounter just decided to trash it and just move forward to revision B.

Now in Revision B all interfaces are tested and confirmed to work fine 🙂

What we keep:

  1. Two relays 250VAC/10A
  2. LiPo charger which allow ESP32 to work without external power supply
  3. Reset and User button
  4. micro SD card
  5. UEXT connector to add temperature, humidity, etc sensors
  6. GPIO with all signals available on 0.1″ proto friendly step connector

What we add:

  1. USB connector now is also used for automatic programming of ESP32 so no need for external serial cable, with DTR and RTS bootloader mode is entering automatically
  2. Ethernet now is correctly wired and works 🙂
  3. We were surprised to read ESP32 has CAN and we try and it works great, so in the new revision we add CAN driver
  4. We add Infrared transmitter and receiver, so now you can control all your home appliances with IR control like TVs, VCRs, Air conditioners, and everything else with IR control

What we removed:

  1. second button, with all above peripherals the ESP32-WROOM-32 module resources are gone, there is no single GPIO unused left

Revision B schematic can be reviewed here . The PCB is now routing.

Color TFT 2.8″ LCD 320×240 pixel display board with UEXT compatible to ESP32-EVB is also coming soon.

Ground Penetration Radar with LIME2 the ultimate tool for all treasure hunters

Screenshot from 2017-04-04 11-45-57

Ground penetration radar is cool device which allows you to see what is below earth surface. The principle is same as the radars which operates at air. They send pulses and sense the reflections of this pulses back. When the surface is not consistent you get reflections which allow you to “see” cavities of metals under the surface, some GPRs can scan as deep as hundred meters below the surface. This is ultimate tool for all treasure hunters, but also very useful if you want to see water and other fluids underground.

We spotted interesting post at our forum for GPR made by company from Plovdiv with LIME2.

The device looks very nice in the custom box they made:

7-small

The GPR has antenna and WIFi connection so you can connect and visualize the results with any device:

10-small

 

TuxCon 2017 Open Source Hardware and Software conference will be 3-4 of June in Plovdiv

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Just 70 days ahead is the 4th TuxCon conference in Plovdiv dedicated to Open Source Hardware and Software. For more info watch on conference page at http://tuxcon.mobi/

The entrance is free for all visitors. TuxCon is a community event and it is organized by volunteers.

3rd of June is the day for lectures and lighting talks, if you have something interesting to share please send your request to info@tuxcon.mobi

On 4th of June we invite you to the traditional soldering hardware hackathon in Olimex training building.

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