New product in stock air/water normal closed magnetic valve driven with 12V with quick connect for 6 mm sleeve

Oli DudeN01

We have new product in stock:

WATER-VALVE-6.5MM-12VDC

WATER-VALVE-6-5MM-12VDC is electro-magnetic valve with normal closed path. It’s driven with 12VDC/0.54A and when power supply is applied opens the valve. It has quick connect for 6 mm sleeves and makes water/air pipes attachment and dis-attachment easy. The valve can work with 0-0.8MPa (0-8 bar, 0-116 psi, 0-7.9 atm) pressure of the air or water.

With this valve and ESP32-EVB you can make IoT watering system, which allow you to switch on and off water supply to your garden or plants via internet.

The demo code is written with Arduino for ESP32-EVB and sources are at Github.

When the server is run you can view the status in your local network:

Screenshot from 2017-12-07 14-59-34

You view the current time and with arrows can adjust time when the watering to start or stop. You can also directly drive your valve with ON and OFF buttons.

 

ESP32-PRO new IoT board with 4MB external RAM, 4MB external Flash, external crypto engine, LiPo charger

PRO

What you see above is our attempt to make ESP32 board with 4MB RAM. Reading the ESP32 datasheet this is quoted as the maximum possible external RAM possible to attach.

It’s named ESP32-PRO and here is the Github repo for it.

We encounter lot of problems while designed it, thanks to Rudi from ESP32.de for the tips and help. As there is the usual mess with the documentation and lot of unclear stuff.

We saw in the new WROVER-KITS we got that the module which is used is not WROOM, but WROVER and inside it has pSRAM.

The pSRAM is working on 1.8V and share same data pins as the Flash so we had to find 1.8V Flash also.

Another issue is that in the documentation pSRAM clock and data are reversed for unknown reason, but at least the software which run on WROVER module has these correctly set 🙂 so we had to ignore the Espressif datasheet and user manual info.

On top of this in the documents never mention that GPIO12/MTDI must be pull high if the power supply is 1.8V neither their reference design show this.

At least now having OSHW board with all correct settings will help other to not struggle all obstacle like us on the road to add external RAM.

We had to go to bare ESP32 chip as the RAM signals are not available on WROOM neither WROVER modules, this will lead to paid certification which we still do not know how much will be, but will have to add to the sale price of this module, so price is yet unknown but will be fair 🙂

As Rev.0 of the ESP32 chip has issue with cache for external RAM, we try to communicate with Espressif if we have to expect other bugs and issues with Rev.1 using external pSRAM, will keep you updated.

Beside the ESP32 we add PIC32MX270F256DT, this is nice processor with USB-OTG which will allow ESP32 to connect to both USB hosts and to act as USB-host and read for instance external USB Flash or take pictures from USB Webcam etc.

Why not AVR? Because AVRs are in trap of their own success. For the price of PIC32MX270F256DT which has 64K RAM, 256K Flash and USB-OTG you can buy ATMega32u4 which has only 2K RAM and 32K Flash and just USB device.

PIC32MX270F256 opens much more possibility with plenty of Flash and RAM.

 

Sneak preview of new OSHW IoT board: ESP32-Gateway

ESP32-GATEWAY

ESP32-EVB really took us lot of time to complete mostly due to the not so complete documentation around Ethernet and our own silly errors. Also we wanted to add so many interfaces there to may people evaluate them all: Ethernet, CAN, Infrared, Relays LiPo UPS etc etc and the board become 75×75 mm. The price also went from EUR 22 to EUR 26.

In parallel we quietly were working on stripped version named ESP32-GATEWAY, as the name says we wanted just to keep here the connectivity: WiFi, BLE, Ethernet, USB for programming and micro SD card.

All available GPIOs are made on 0.1″ step strip at the bottom of the board, and two nice mount holes:

ESP32-GATEWAY-1

Today we assembled the first prototypes and we will test tomorrow. If everything is OK we will run production. We already have 100 blank PCBs ready as after so much time spent on ESP32-EVB we do not expect any troubles, but still wanted to reduce the risk to throw in the garbage bin more than 100 boards if we missed something.

So hold your breath if everything is OK we will have 100 boards for sale next week 🙂

The price of ESP32-Gateway will be EUR 22.

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.

nsmail

 

ESP32-EVB our new board for IoT first prototypes are ready

esp32-evbesp32-evb-2

ESP32-EVB is our new board with ESP32-WROOM32 module. It has:

  • ESP32-WROOM32 module
  • two relays 10A/250VAC
  • Ethernet 100Mb interface
  • LiPo charger and step up converter allowing ESP32-EVB to run from LiPo battery
  • microSD card connector
  • two user buttons
  • UEXT connector to attach different sensors and modules
  • 40 pin GPIO 0.1″ step connector with all resources of ESP32
  • 5V power jack
  • three mount holes

Now time to write some examples and if everything works to launch production.

The sale price will be EUR 22.00

ESP32-WROOM-32 WiFi/Bluetooth module is in stock!

esp32-wroom32-1

ESP32-WROOM-32 modules are in stock now!

Again these are from the very first lot and with limited supply. To give chances to more developers to try them we will not allow more than 3 modules per order.

This module is good only if you develop your own board. For these who are not good with the soldering iron and SMD components soldering our advice is to wait for new supply of ESP32-CoreBoards or our own ESP32-EVB which will come with two Relays, Two buttons, SD-card connector, Ethernet 100Mbit and all signals on prototyping friendly 0.1″ step connectors.

Thanks for all who posted tips on our blog about ESP32-EVB feature wishlist!

EDIT: there was question on Twitter if these are original Espressif parts and why there is no FCC/CE markinig, my guess is that the certification is not complete, as it’s in the datasheet but not on module body. The modules come directly from Espressif, as you can see from reel label they are manufactured October 15th 2016 and one week later are in our stock for sale 🙂

esp32

ESP32-CoreBoard is sold out, ESP32-EVB design has started

esp8266-evb-bat-1

ESP32 is really hot, the first lot we got sold out for couple of days. If we didn’t put the restriction for one module per order it would be sold out in matter of hours, as people wanted to buy x5 and x10.

ESP32-WROOM-32 modules are shipped from Espressif and we wait them to arrive next week.

Meantime we started the design of our ESP32-EVB board.

What we think so far is to have these features:

  • power supply from 5V
  • LiPo charger and step up converter to allow un-interruptable power supply
  • Two relays 220VAC/15A
  • Two user buttons
  • UEXT connector to which you can connect many of our sensor UEXT boards, or to program the board with serial cable same way like ESP8266-EVB
  • status LEDs

With the two relays you will be able to switch on and off two different appliances.

With the sensors on UEXT you will be able to measure temperature, light, moisture etc. and log them.

The plan is to complete the design in October and start selling this board in November.

Our target is to release this EVB for EUR 15.00.

If you think we should add something else let us know.

Previous Older Entries