ESP Matrix Board - Clock Led Matrix WiFi NodeMCU ESP8266 

PCBWAY PCB Prototype the Easy Way $5 for 10 pcs 1-2 Layer build time 24hours.
www.pcbway.com/?from=bluino
In this video we build a simple clock using an ESP8266 chip (Nodemcu/Wemos), a DS3231 RTC, and a 32x8 LED Matrix.
Step to program Nodemcu with Android app no need PC computer/Laptop:
1) To program the Nodemcu ESP8266 (ESP Matrix device) very simple, you only need to connect Nodemcu (ESP Matrix device) to an Android phone via a micro usb cable and OTG adapter, see picture. NB: Micro USB socket on back only for power use (not line to programming Nodemcu)
2) Then install the ESP Matrix Offline app from Google Playstore.
3) In the first welcome screen tap UPLOAD button.
Here are the components that you will need to make this project:
1 x PCB ESP Matrix Board (PCBWAY)
1 x LED Dot Matrix MAX7219 4in1 Module
1 x NodeMCU Amica ESP8266
1 x USB to TTL CP2012 Module
1 x RTC DS3231 Module
1 x Active Buzzer 5V
1 x Tact Switch 22mm
1 x 5 pin Male Header 90 degree
2 x 5 pin Male Header
2 x 15 pin Female Header
1 x 4 pin Female Header
USB OTG Adapter
Micro USB Cable
Case 3D Printing Part
Acrylic transparent 3mm
You can follow step by step guide on instructables www.instructables.com/Digital...
Find ESP Matrix Offline App on Google Playstore play.google.com/store/apps/de...
Order ESP Matrix Board PCB on PCBWAY www.pcbway.com/project/sharep...
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ESP Matrix Board - Clock Led Matrix WiFi NodeMCU ESP8266

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