ALKS ESP32

Development Board

Code name: ALKS

ESP32

ALKS ESP32 is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 4MB flash memory.

About ALKS ESP32

Compact ESP32 board from ALKS - built for basic wireless applications and embedded systems.

Technical Specifications

Complete technical specification details for ALKS ESP32

Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 4.2

BLE 4.2

Microcontroller

Model esp32

Clock Speed 240 MHz

Flash Size 4MB

Architecture xtensa

✨ Features & Pins

Digital IO 40

Analog Input 16

PWM 20

Interrupts 16

Download Full Datasheet

Quick Setup

Copy-paste configs for ALKS ESP32 - auto‑generated from this board's exact hardware specs.

ESP32 240 MHz 4MB DIO Xtensa

In Arduino IDE 2 select Alks from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 4MB · DIO.

Tools menu settings

Board (select in Arduino IDE) Alks

CPU Frequency 240 MHz

Flash Size 4MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "Alks" for the ALKS ESP32.

platformio.ini


[env:alksesp32]
platform  = espressif32
board     = esp32dev
framework = arduino

; Exact hardware config for ALKS ESP32
board_build.mcu        = esp32
board_build.f_cpu      = 240000000L
board_build.flash_size = 4MB
board_build.flash_mode = dio
board_upload.flash_size = 4MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32dev
  framework:
    type: arduino   # or "esp-idf"

# ALKS ESP32 - 240 MHz ESP32
# Flash: 4MB | USB: N/A

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 4MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

ALKS ESP32 Pinout Diagram

Complete pin reference for ALKS ESP32

Useful Links

Datasheets and resources for ALKS ESP32

Board Datasheet

Technical specifications

ESP32 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for ALKS ESP32

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	PWM	Other
0			SW3
1		PWM	TX
2		PWM	SW2
3		PWM	RX
4		PWM	L_RGB_R S1
5		PWM	L_B
12	A6	PWM
14	A5	PWM	SCL
15	A7	PWM	SW1
16		PWM	L_RGB_B S2
17		PWM	L_G
18		PWM	S3
19		PWM	S4 SS
21		PWM	L_RGB_G S5 MOSI
22		PWM	L_R MISO
23		PWM	LED_BUILTIN L_Y SCK
25	A2	PWM	DAC1
26	A3	PWM	DHT_PIN DAC2
27	A4	PWM	SDA
32	A0	PWM
33	A1	PWM
40
41

Legend

A0 Analog input

T0 Touch sensor

PWM PWM capable

RX/TX Serial pins

LED Built-in LED

# Pin number

Default Tools & Configuration

Build and upload settings for ALKS ESP32

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	dio
Boot mode	dio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)