Generic ESP8285 Module
ESP8285 with built-in flash - compact and reliable for embedded, space-constrained Wi-Fi projects.
ESP8266
MCU
160MHz
clock
4MB
flash
~80KB
SRAM
17· 1 ADC
GPIO
Wi-Fi
radio
Pinout
Getting started
flash your first firmware in ~2 minutes1
Connect over USB
Serial chip: onboard. Not detected? Hold BOOT while plugging in.
2
Flash with your tool
Arduino IDE, PlatformIO, ESPHome or esptool - copy the settings on the right.
3
Verify it runs
The blink example uses GPIO8 - swap for your board's LED pin if different.
Board: Esp8266 Esp01
Flash Size: 4 MB · DOUT
Upload Speed: 921600
// blink
pinMode(8, OUTPUT);
digitalWrite(8, LOW); // on (often inverted)[env:esp8285]
platform = espressif32
board = esp32dev
framework = arduino
monitor_speed = 115200
upload_speed = 921600esp32:
board: esp32dev
variant: esp8285
framework:
type: esp-idf
# blink - GPIO8
output:
- platform: gpio
pin: 8
id: led_out
light:
- platform: binary
name: "LED"
output: led_outesptool.py --chip esp8266 --port /dev/ttyACM0 \
write_flash 0x0 firmware.binSpecifications
ESP8266Compute
MCU
ESP8266
Clock
160 MHz
SRAM · Flash
~80 KB · 4 MB
Radio
Wi-Fi
802.11 b/g/n
Bluetooth
-
Antenna
PCB
I/O
GPIO · ADC
17 · 1
UART · I²C · SPI
2 · 1 · 2
PWM
-
Power
USB
-
Serial
-
Boot address
0x0000
Flashing
Upload · OTA
esptool · esp_ota
Flash · Boot mode
DOUT · -
Sketch · Data
- · 80 KB
The Generic ESP8285 Module uses esptool for firmware uploads, esp_ota for over-the-air (OTA) updates. Flash mode is DOUT.
About this board
The Generic ESP8285 Module (also written ESP8285 module or ESP8266 with embedded flash) is an Arduino ESP8266 core profile for programming custom or unknown ESP8285 boards. The ESP8285 is an ESP8266 with 1 MB of flash built into the chip package for fewer external parts and smaller boards. It offers 802.11 b/g/n Wi-Fi and flashes via Arduino IDE or esptool with manually set options, ideal for compact, low-cost Wi-Fi IoT and custom PCBs. In this guide, you'll find the Generic ESP8285 Module pinout, datasheet, technical specs, and setup instructions.
Resources
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