You Can Now Buy ESP3212 ESP32 WiFi + Bluetooth Module for $6.95

After the official launch of ESP32 processor for less than $3, it did not take long before ESP32 modules hit the market, and Seeed Studio has already listed ESP3212, one of the first modules based on Espressif ESP32 Bluetooth LE + WiFi SoC, for $6.95 with shipping scheduled to start on September 23, 2016.

ESP3212-ModuleESP3212 module specifications:

  • SoC – Espressif ESP32 dual core Xtensa LX6 processor @ up to 240 MHz with 448 KB flash, 520 KB SRAM, 16 KB SRAM in RTC, WiFi and Bluetooth LE connectivity
  • Storage – 4MB Winbond SPI flash
  • Connectivity
    • 802.11 b/g/n/e/i WiFi (HT40) up to 150 Mbps
    • Bluetooth 4.2 BR/EDR and BLE
    • 3 dBi PCB antenna
  • Headers – 22x GPIOs (multiplexed with ADC, Touch, DAC, SPI, UART, CAN, ETH, IR, PWM, and I2S), 1x UART, Sense VP/Sense VN, EN pin. 3.3V and GND
  • Power Supply – 3.0 – 3.6V
  • Dimensions – 24 x 16 x 3 mm

ESP32-ModuleThe exact pinout of the module can be found on Taobao, section “3.2 接口定义”.

NumberPin NameDescription
1GND接地
2EN模组使能端,高电平有效
3SVPSENSOR_VP, GPIO36, ADC1_CH0, RTC_GPIO0
4SVNSENSOR_VN, GPIO39, ADC1_CH3, RTC_GPIO3
5IO34GPIO34, ADC1_CH6, RTC_GPIO4
6IO35GPIO35, ADC2_CH7, RTC_GPIO5
7IO32GPIO32, 32K_XP, (32.768 kHz晶体振荡器输入),ADC1_CH4, TOUCH9, RTC_GPIO9
8IO33GPIO33, 32K_XN,(32.768 kHz晶体振荡器输出),ADC1_CH5, TOUCH8, RTC_GPIO8
9IO25GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6
10IO26GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7
11IO27GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17
12IO14GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS,HSPICLK
13IO12GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ
14IO13GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, U0CTS
15IO15GPIO15, ADC2_CH3, TOUCH3, RTC_GPIO13, MTDO, HSPICS0, U0RTS
16GND接地
17IO2GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP
18IO0GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1
19IO4GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD
20IO16GPIO16, HS1_DATA4
213V33.3V 供电
22IO17GPIO17, HS1_DATA5
23IO5GPIO5, VSPICS0, HS1_DATA6
24IO18GPIO18, VSPICLK, HS1_DATA7
25IO23GPIO23
26IO19GPIO19, VSPIQ, HS2_DATA2
27IO22GPIO22, VSPIWP, HS2_CLK
28U0RXU0RXD, GPIO3, CLK_OUT2, HS2_DATA0
29U0TXU0TXD, GPIO1, CLK_OUT3, HS2_DATA1
30IO21GPIO21, VSPIHD, HS2_CMD
31GND接地

On the software side of things, you should be able to use ESP32 SDK available from Espressif website, aka ESP32 IoT Development Framework (IDF). If you prefer Arduino or NodeMCU firmware, the former is available for ESP32 in beta phase @ Arduino Core for ESP31B ESP32 and NodeMCU should be work in progress, but I have not found code specific to ESP32 on NodeMCU github repo.

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