LOLIN D32 ESP32 Board 4 MB FLASH

The Lolin D32 is the successor model of the popular LOLIN32. Compared to the Lolin32, some improvements have been made, including lower power consumption in DeepSleep mode. The successor to the ESP8266 also has WiFi and Bluetooth and Bluetooth LE, more IO pins and improved analog inputs. The ESP32 can be programmed under Arduino. However, the board must be integrated first. I recommend the ESP32 only for advanced users, as it is not yet supported by all Arduino libraries. In addition to the WiFi / BLE SoC, the Lolin32 board includes a CH340, which converts USB to serial and allows your computer to communicate with the microcontroller. The LOLIN32 also features a LiPo charger with a connection for 3.7V LiPo's, so you can make your ESP32 project battery-powered and truly wireless. Thanks to the small form factor, the LOLIN32 can be plugged directly onto a breadboard and a jumper cable can be plugged on both sides.  

Features Lolin D32 / Improvements compared to Lolin32: 

• The board features an official Espressif ESP32-WROOM-32 module.  
• Latest ESP32 version: REV1
• 4M bytes flash memory
• Lithium battery interface, 500mA maximum charging current
• Compatible with Arduino, MicroPython
• Standard firmware: latest MicroPython
• Lipo voltage measurable via voltage divider (analog input GPIO35)
• Improved mounting holes
• Very low power consumption in DeepSleep of only approx. 0.07mA (improved by 50% compared to the Lolin32 with 0.15mA)

Reading Lipo Voltage:

With the following function you can easily read the Lipo battery voltage from the Lolin D32: 

Float ReadBatteryVoltage(){ 
Return analogRead(35)/4096.0*7.445; 
} 

USB-UART CH340 Driver

Windows: ch341ser_win.zip
Mac OSX: ch341ser_mac-1.4.zip

Lolin D32 Schematic:

• Lolin D32 Schematic

Technical Details: 

• Dual-core Tensilica LX6 microprocessor
• USB-UART Chip: CH340
• USB Connection: Mico USB
• Up to 240MHz clock frequency
• Integrated 802.11 BGN WiFi transceiver
• Integrated dual-mode Bluetooth (BLE and Classic)
• Operating voltage I/O: 3.3V
• Digital I/O Pins: 22
• Analog Input Pins: 6 (VP, VN, 32, 33, 34, 35)
• Analog Output Pins: 2 (25, 26)
• Flash: 4M bytes
• Integrated LiPo battery charger for 3.7V Lipos with max 500mA charging current
• Lipo Battery Connection: PH-2 2.0mm
• LED_BUILTIN: 5
• DeepSleep Power: approx. 0.07mA
• Dimensions: 57 x 25.4 x 7mm
• Weight: 7g  

Scope of Delivery: 

• 1x LOLIN D32 ESP32 Board 4 MB FLASH
• 2x 1x16Pin pin header