NodeMCU.md

+## Comparison Table
+
+[[/imgs/esp/comparison.png]]
+
+| | NodeMCU v2 (DevKit) | Arduino MKR1000 | Particle Photon |
+|---|---------------------|-----------------|-----------------|
+|Microcontroller|ESP12-E module, with Espressif ESP8266 32bits|ARM Cortex M0+ 32bits|ARM Cortex M3 32bits|
+|Clock Speed|80MHz|48MHz|120MHz|
+|Board Power Supply|5V|5V|5V|
+|Circuit Operating Voltage|3.3V|3.3V|3.3V|
+|Flash Memory|4MB|256KB|1MB|
+|SRAM|64KB|32KB|64KB|
+|EEPROM|No|No|Emulated|
+|Digital I/O Pins|10|8|18|
+|PWM Pins|10|12|9|
+|Analog Input Pins|1 (ADC 10 bit)|7 (ADC 8/10/12 bit)|8 (12 bit)|
+|Analog Output Pins||1 (DAC 10 bit)|2 (12 bit)|
+|Connectivity|IEEE 802.11 b/g/n Wi-Fi|IEEE 802.11 b/g/n Wi-Fi|IEEE 802.11 b/g/n Wi-Fi|
+|Antenna Type|PCB|PCB|PBC and uFI|
+|Supported Battery|No|Li-Po single cell, 3.7V, 700mAh minimum|No|
+|UART|1 (+ TX only on pin GPIO2)|1|1|
+|SPI|2|1|2|
+|I2C|1|1|1|
+|LED builtin|D0 / GPIO 16|GPIO 6|D7|
+|Programming Languages|C++ / Python / Lua / Javascript|C++|C++|
+|Flashing|Locally / OTA|Locally / OTA|Over the Web IDE / OTA|
+|Cost|$4.30|$32|$19|