Dev Boards
ESP32D-N4XX - WIFI+BLT 30 PIN (Type C)
৳930
Dual-core microcontroller clocked up to 240 MHz with WiFi and Bluetooth built in, running 3.3V logic over a USB-C connection.
The WiFi and Bluetooth are on the chip itself, so nothing extra is needed to get a project online. Two cores also mean networking can run without stalling whatever else the board is doing — the practical reason to choose it over an ESP8266.
What you can build
- IoT sensors that publish readings to a phone, a dashboard or a server
- Bluetooth-controlled robots and remote controls
- Home automation that needs to run reliably while staying connected
Not sure it will work? Test your circuit free in Tekko Sim — on your phone, in Bangla or English.
Chip: ESP32, Xtensa dual-core
Clock Speed: up to 240 MHz
Logic Level: 3.3V
WiFi: 802.11 b/g/n, 2.4 GHz
Bluetooth: Classic and BLE
SRAM: 520 KB
Flash: 4 MB on the usual module
ADC Resolution: 12-bit
Connector: USB Type-C
| Category | Dev Boards |
| Model no. | ESP32 |
| Availability | In stock |
| In stock | 6 pcs |
| Delivery | Cash on Delivery, nationwide Bangladesh |
Questions about the ESP32D-N4XX - WIFI+BLT 30 PIN (Type C)
How many GPIO pins does the ESP32 have?
The chip itself exposes 34 GPIO, but a development board breaks out fewer — commonly a 30-pin or a 38-pin header depending on the board. GPIO 34 to 39 are input-only, and a handful of pins are used during boot, so not every pin on the header is free for general use. Ask us which pin count the current batch carries before designing a board around it.
ESP32 or ESP8266, which should I buy?
The ESP32 has two cores, more RAM, Bluetooth as well as WiFi, more ADC channels and hardware touch inputs. The ESP8266 is cheaper and perfectly fine for a simple sensor that wakes up and reports one reading. For anything doing two things at once, take the ESP32.
Can I connect a 5V sensor to an ESP32?
Not straight onto a GPIO pin. The ESP32 is a 3.3V part and 5V on an input can damage it. Use a level shifter or a resistor divider on any 5V signal output. Many sensor modules are happy to run from the board's 5V pin while still talking at 3.3V.
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