BlkBox BB-E01P – The World’s Smallest ESP8285-Based WiFi Module




Back in March 2016, Espressif Announced the ESP8285 Wi-Fi Chip, a supposed killer of the favorite ESP8266 chip. The new chip is an ESP8266, but with the flash memory onboard – 1MB flash memory. Espressif’s ESP8285 delivers highly integrated Wi-Fi SoC solution to meet users’ constant demands for efficient power usage, compact design and reliable performance in the Internet of Things industry. With the complete and self-contained Wi-Fi networking capabilities, ESP8285 can perform either as a standalone application or as the slave to a host MCU. When ESP8285 hosts the application, it promptly boots up from the flash. The Chip is also ultra-small as compared to the ESP8266 making it suitable for applications like in wearables.

BlkBox BB-E01P – The World’s Smallest ESP8285-Based WiFi Module




Taiwan based Blkbox may have designed the world’s smallest WiFi IoT module with their Espressif Systems ESP8285 based BB-E01P module which is pin-compatible with the ESP-01 module, and measuring just 10×14 mm. Several ESP8285 modules have been released, but the Blkbox version is probably the smallest ever. Itead Studio’s PSF-A85, an ESP8285 Wireless Module measures just 14mm*135mm, and even the Electrodragon ESP8285 WiFi module measures 15.5mm x 17.8mm. With this, the Blkbox module might be the smallest we currently have. The BB-E01P is the equivalent of the Blkbox predecessor BB-E01 with reduced dimensions.

The following are the specification of the Blkbox BB-E01P ESP8285 WiFi module:

  • WiFi SoC – Espressif ESP8285 WiFi SoC with 1MB internal flash
  • Connectivity – 802.11 b/g/n WiFi with chip antenna
  • Expansion – 8-pin (2.54mm pitch) with Tx/Rx, CP, RS, GPIO0, GPIO2, 3V, GND (Same layout as ESP-01)
  • Interface – UART
  • Misc – Jumper supports Deep Sleep Mode (AT+GSLP)
  • Firmware Version: AT v1.6 / SDK v2.2
  • Power Supply – 3V -3.6V
  • Dimensions – 10 x 14 mm
  • Pin Pitch – 2.54mm

Read more: BlkBox BB-E01P – The World’s Smallest ESP8285-Based WiFi Module




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