Technical Specifications

WiSer-USB

WiSer-TTL

Processing Unit

Espressif Systems ESP32-S2 Wireless SoC

Espressif Systems ESP32-S2 Wireless SoC

Wireless Protocol

IEEE 802.11 b/g/n 2.4GHz

IEEE 802.11 b/g/n 2.4GHz

Supported Platforms

Windows, Linux, Mac and Android

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Serial Port

Baud Rate: All standard and custom rates up to 921,600 baud

Data bits: 6-bit, 7-bit, 8-bit

Parity types: NONE, ODD, EVEN, MARK, and SPACE

Stop bits: 1-bit, 1.5-bit, 2-bit

Flow control: software (XON/XOFF), hardware (RTS/CTS), and None

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User Indication

2 red LEDs for RX and TX indication

3 red LEDs for RX, TX and CONN indication

Buttons

FIND-PAIR button: To locate the paired device

BOOT button: for FW upgrade

BOOT button: for FW upgrade

Connectors

USB Type-C male plug: For power supply, serial data communication and firmware upgrade

USB Type-C Female port: For Power supply and firmware upgrade

Power supply Input Pins: To supply power using Jumper cables

Serial Interface Pins:

  • 3V3, TXD, RXD, RTS, CTS, DTR, VCC, GND

(Note: 3V3 and VCC are power supply output pins which can be used to power external boards)

IO Pin tolerances

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Voltage range: 0 to 3.3V

Output Pin Current: 25 mA

Input Pin Current: 50nA

Power Supply

5V @ 500mA

5V @ 500mA

Antenna Type

Omnidirectional chip antenna with 0.5 dBi gain (Peak)

Omnidirectional chip antenna with 0.5 dBi gain (Peak)

Dimensions

With enclosure: 37.8 x 20.4 x 8.2 mm

Without enclosure: 35.8 x 14.4 x 4.7 mm

With enclosure: 36.5 x 38.4 x 9.8 mm

Without enclosure and header pins: 28 x 29 x 4.3 mm

Weight

With enclosure: 4.5 grams

Without enclosure: 1.6 grams

With enclosure: 10.5 grams

Without enclosure: 3.7 grams

Operating Temperature

-40 to 85 °C

-40 to 85 °C

Humidity

< 60% RH (Non-condensing)

< 60% RH (Non-condensing)

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