Thanks to customer Mark, here is wiring diagram of the flow sensor/meter with esp8266, the key point is needing a 555 timer chip as a Schmitt trigger. Also the VCC voltage of flow sensor is 5V, and esp8266 is 3v3, a voltage...

It seems the current online custom build with dev branch can not work well with smartconfig, or the ESP8266 smart config android APK, so we tried to figure with the espressif official APK and master branch. The master branch is:...

You can find the mentioned items in our store here. This is a demo test of the pair of wireless power charger, five LEDs connected paralleled on the receiver end, output more than 200~300 mA (over range of display) current. There...

Pick and place file output from eagle, and copy into a SD card for use. The machine only running 10% speed of normal, but actually it can run 150% speed of normal. Each time pick and place work include the...

Shipment Suspend: We will have a long holiday from 4th till 13th, delivery can not be fulfilled during this time. Holiday promotion: Use coupon code “2016-year” to get 10% discount. This discount is not conflicting with your member discount. PCB service...

A simple breakout board of ESP8266 on breadboard can do most of NodeMCU work. Also need a PL2303 USB-TTL programmer Most wifi embedded project will not have too much input and output resource to let the user enter the wifi...

All the relevant items can be purchased from www.electrodragon.com!  items used in here including: ESP-07 with on board status LED (ESP-12 LED will not work for arduino blink sketch) ESP breakout board CH340 USB-TTL programmer breadboard and a few jumper wires....

You can find the arduino library in the product link: http://www.electrodragon.com/product/ws2812-neopixels-ring-leds/ http://www.electrodragon.com/product/8-led-ws2812-5050-rgb-led-stick-board/ From the example, run “standtest” sketch, follow the instruction to setup for the board, and it will show all the standard effects: The wiring should be Din –...

You will need firmware, NodeMCU flasher to flashing the firmware, and Esplorer GUI to test the firmeare. All the tool you can find it here. Wiring as below use a PL2303 USB-TTL here: TX-RX, RX-TX, GND-GND, 5V – VIN Open the...

Combined two items to together, the module from AC power source to 5V and 3v3: AC-DC AC 85-265V to DC 5V Power Module AMS1117-3V3 Regulator Module This is just a rough idea, you can make it much better. ( for...

We are new to the quadcopter, it is a lot of fun, but the video quality turn out to be really normal. So there are basic problems which need to be aware when you choose a cheap one of this:...

The NodeMcu development board is sold out recently, not sure when the new stock will arrive. The development has some peripheral circuit to ease your usage, including USB-UART, USB5V-3.3V power supply, buttons, and lead out all the IOs. But you...

There is already an official SDK running on Linux Lubuntu, very easy and simple to use. But now here we have the SDK environment transplant to Windows system via the software tool called cygwin, which allow you to create the linux...

It is very easy and common to read the RFID card ID, which is the first 4 bytes of the data area, and used to identify the card holder. But also a lot of people ask if the RC522 can...

Get the firmware from our wiki page here. edited version based on 00160901. Follow the wiring setup for update mode in our old post. Use the XTCOM tool to upload the firmware, first connect the port, and select FLASH IMAGE DOWNLOAD,...

First what you receive firmware version, mostly could be: 00160901, this version number actually are two parts, 0016 is the SDK version, and 0901 is the AT version. Let us first update to a Cloud update supported version 00170901, please...

In the last post, the problem finally concluded is the circuit in the socket can not provide enough current to support the bluetooth module, according to the equation, it is probably only 22mA, so these items are bought to replace...

This test is based on our basic CC1101 board, it is the basic version, not the highest signal strength, nor using the on-board MCU to simply the communication to serial port. So this board works at SPI originally. First what...

About the timer socket: This timer ac socket can mount on the normal AC socket, and other domestic appliance can further plug on it, there is a button and a few LED indicating time: 2hour, 4 hour, etc, when you...