Are you ready to play with Do-It-Yourself Alexa Speaker, WiFi SIP phone, WiFi walkie-talkie, Internet Radio player and broadcasting? Then the Open Source hardware ESP32-ADF is the right board to start with!

ESP32-ADF

With ESP32-WROOM-B module with 8MB RAM and 4MB of Flash, two microphones, two 3W speakers, codec, amplifier, Lipo charger, USB with programming, Audio 3.5mm jack, ESP32-ADF board offers everything you need to start playing with Espressif Audio Development Framework.

Today we made our first Alexa prototype:

and we spoke with ESP32-ADF running WiFi SIP phone, you do not need PC to make free calls all around the world to other people with VoIP phones!

Surprisingly there was no any lag caused by the WiFi and it works as good as the commercial wired SIP VoIP phones.

We add now MOD-LCD2.8RTP with touch screen on ESP32-ADF UEXT connector and write some nice graphical UI then will upload the VoIP phone demo code next week.

We do same for the Internet Radio player demo – nice graphical UI, so user can select which radio station to connect to.

 

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.

MicroPython running on ESP8266-EVB driving MOD-IO and MOD-IO2 relays

mod-io2-details.png

New tutorial how to use ESP8266-EVB with Micropython and to switch on/off relays and read ADC values on MOD-IO2 from MCHobby.be

New ESP32 Development board in stock ESP32-DevKit-Lipo target handheld applications with build in LiPo charger

ESP32-DevKit-LiPo

ESP32-DevKit-Lipo is pin to pin compatible with Espressif ESP32-CoreBoard (ESP32-DevKitC) board, but adds additional LiPo charger and battery connector, allowing board to work from LiPo battery when external power supply is missing.

Tomorrow 16.10 at SofUnitConf in Paradise Center in Sofia we will have Workshop with this board to show how easily it could be programmed with JavaScript and Espruino.

ESP32-POE Open Source Hardware IoT development board with WiFi/BLE/100Mb Ethernet with 802.3 POE is in stock!

ESP32-POE-1

ESP32-POE board is now in stock. The prices start from EUR 14.36 for 50 pcs order.

This board offers Open Source Hardware / FOSS solution and building block for distributed sensor network with power over existing LAN infrastructure.

Possible use cases are Home automation, Industrial machine logging, remote environmental monitoring, access control, remote displays etc.

The board contains ESP32-WROOM-32 module with WiFi/BLE and Ethernet connectivity , RESET and USER buttons, micro SD card, LiPo battery charger and LiPo connector which allow board to work even with power supply drops.

The UEXT connector on the board can be used to connect many different sensors like:

Si3402-B chipset takes care for the power over ethernet, it’s IEEE 802.3 compliant, including pre-standard (legacy).

Important notice, to keep board compact and as it’s main purpose is to connect to cloud different remote sensors there is no galvanic isolation between board and the power delivered by the LAN switch or router.

ESP32-POE has internal programming interface and you can program it with Espressif SDK or Arduino via USB cable. As the board is not galvanic isolated from the Ethernet power supply, before you connect the USB cable to your computer you should remove the Ethernet cable or you should use USB-ISO between your computer the ESP32-POE!

 

Espressif got new competitor RDA5981 dedicated for IoT and audio apps

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Few years ago Espressif released their first low cost WiFi chip ESP8266 and turned upside down the WiFi connectivity for small MCU. They have been left relatively to no competition from the big Western chip makers who couldn’t match their aggressive pricing, but later there was semi successful competition from Realtek and now there is another competitor who is focused on low cost IoT audio applications but their chip is quite good for general purpose WiFi stuff also. The RDA5981 is based on Cortex-M4 inside

  • running at 160Mhz
  •  160KB SRAM
  • 8MB PSRAM
  • 4MB Flash
  • build in USB 2.0 host interface allow USB devices to be connected to the module directly which is advantage toward Espressif chips
  • Support Bluetooth 2.1 EDR + BLE4.2
  • SDMMC interface
  • 2x 10bit ADCs
  • SIDO x1, I2C x1, I2S x2, PWM x8, IR, SPI x4, UART x2, GPIO with interrupts x14
  • operating temperature -30+80C

According to the PR message their focus is voice recognition / audio play and they shipped already 200 Millions of these chips ин 2016. Looking at the features above they can be used for other IoT applications as well if their SDK is easy enough to use by maker community. The question is will be they smart enough to be more user friendly as ESP.

I check their web and even to download their datasheet they require registration :). I understand this as – we hide our product info from our potential customers as we do not want they to evaluate our chips. These registrations beside pissing off potential customers do not hide anything from their competitors as they would easily register with fake info and get them anyway, but obvious this is the way most Chinese companies work.

via Twitter (Thanks to Rudi!)

EDIT 10-01-2018: There is actually GitHub repo with the datsheet, so their web may be not updated!

New Product in stock MOD-WIFI-AR9271 libre drivers and firmware WiFi dongle

MOD-WIFI-AR9271-2

AR9721 chipset is the only one on the market with completely open source linux drivers and firmware, this make it WiFi chipset of choice for people who respect their freedom.

We have MOD-WIFI-AR9721-ANT for quite some time and it’s very popular item, but the 200mm antenna make it not quite small. Now we add to our web shop the version without external antenna. It’s with 85 x 25 x 10 mm dimension and have same working distance as the external antenna version.

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