What is it?

The DSTIKE ESP32 Walkie Talkie is a fully assembled, open-source voice communication device built around the ESP32-WROOM-DA module.

Instead of using a conventional radio system, it transmits digital voice data directly between compatible devices using ESP-NOW. No Wi-Fi router or internet connection is required. Under open, low-interference, line-of-sight conditions, the communication range can reach approximately 150 meters.

This product was designed to help makers and beginners explore ESP-NOW through a practical, working device. The schematic and firmware source code are open-source, allowing experienced developers to modify the hardware and software, experiment with audio transmission, or turn it into a Wi-Fi-based intercom and other creative wireless communication projects.

Fully Assembled Maker Hardware

The device is delivered as an assembled finished product. It features a custom PCB, a 3D-printed enclosure, a transparent acrylic front panel, and 3D-printed control switches.

A 1.3-inch display shows the current operating information, including the selected channel and volume status. Three brown control buttons provide access to 10 preset channels and volume adjustment:

Short press to change the operating channel
Long press to adjust the speaker volume

The large red PTT button provides simple push-to-talk operation.

RGB Status Indicator

A built-in RGB LED clearly shows the current operating state:

Green: Standby and ready
Red: PTT pressed and voice signal transmitting
Blue: Voice signal received and playing through the speaker

Battery and Charging

The ESP32 Walkie Talkie includes a built-in rechargeable 2500mAh 18650 battery.

Four individual LEDs provide a clear battery-level indication, while the charging circuit supports an input of up to 5V/1.5A.

Key Features

ESP32-WROOM-DA main controller
ESP-NOW digital voice communication
Half-duplex push-to-talk operation
Communication range up to approximately 150 meters in open conditions
No Wi-Fi router or internet connection required
1.3-inch information display
10 preset communication channels
Short-press channel selection
Long-press volume adjustment
RGB operating-status indicator
Built-in 2500mAh 18650 battery
Four-LED battery-level indicator
Charging input up to 5V/1.5A
Large red PTT button
3D-printed enclosure and switches
Transparent acrylic front panel
Open-source schematic and firmware
Fully assembled product

Designed for Learning and Modification

This is more than a finished walkie-talkie—it is an open development platform for learning how ESP-NOW voice communication works.

Beginners can use the assembled device to understand ESP-NOW, push-to-talk logic, wireless audio transmission, displays, RGB status indicators, battery management, and embedded user interfaces.

Developers can modify the source code to explore conventional Wi-Fi audio transmission, custom channel systems, new user interfaces, remote control applications, wireless notification devices, or other ESP32-based communication projects.

Because the ESP32-WROOM-DA module has been discontinued, this product may also be of interest to ESP32 enthusiasts and collectors who want a functional product built around this distinctive module.

Important Notes

At least two compatible units are required for voice communication.
This product uses ESP-NOW and is not compatible with conventional analog walkie-talkies, FRS, GMRS, PMR446, or other traditional radio systems.
The stated 150-meter range is based on open, low-interference conditions. Actual range will vary depending on buildings, walls, antennas, nearby wireless signals, and the operating environment.
This product is intended for makers, education, development, and experimentation. It should not be used as an emergency or safety-critical communication device.