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Wi-Fi & Bluetooth Low Energy Remote Control

Last Updated on : 2022-03-02 02:05:47download

Universal Remote Control Wi-Fi and Bluetooth Low Energy (LE) is an infrared (IR) universal remote control that Hangzhou Tuya Inc. has developed. It consists of a low-power WB3S Wi-Fi module(or WBR3 Wi-Fi module), an IR emitter, and an integrated IR receiver. Figure 1 shows the functional block diagram.

Overview

WB3S is a low-power Wi-Fi and Bluetooth LE combo module that Tuya has developed. It consists of a highly integrated RF chip (BK7231T) and several peripheral components, with an embedded Wi-Fi network protocol stack and robust library functions.WB3S also contains a low-power 32-bit microcontroller unit (MCU), 1T1R WLAN module, 256 KB static random-access memory (SRAM), 2 MB flash memory, and extensive peripherals.

WB3S is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and TCP/IP protocols. You can develop embedded Wi-Fi products as required.

Features

Power input: 5 V DC 1 A (over a micro USB port)
Standby power: ≤ 0.4 W
Working temperature: -10°C to +50°C
Working humidity: ≤ 85% RH
Connection mode: 2.4 GHz 802.11b/g/n
IR learning frequency: 38 kHz
IR direction: multidirectional
IR control distance: ≤ 8 m (horizontal control) or ≤ 15 m (pointing to the controlled device), which may vary depending on the environment
IR learning distance: ≤ 3 m (pointing to the controlled device) and a ±45° angle, which may vary depending on the environment
Supported devices: devices that run Android 4.0 or iOS 8.0 and later versions

Applications

All IR home appliances that use the 38 kHz carrier frequency

Electrical parameters

Absolute electrical parameters

Parameter	Description	Minimum value	Maximum value	Unit
Ts	Storage temperature	–40	150	°C
VCC	Power supply voltage	–0.3	3.6	V
Static electricity voltage (human body model)	Tamb = 25°C	N/A	2	kV
Static electricity voltage (machine model)	Tamb = 25°C	N/A	0.5	kV

Working current

Working Mode	Working Status (Ta = 25°C)	Average Value	Peak Value^*(Typical Value)	Unit
Quick connection network status (Bluetooth network)	The module is in the fast network configuration state, and the Wi-Fi indicator flashes quickly	100	260	mA
Fast connection network status (AP network configuration)	The module is in the fast connection network configuration state, the Wi-Fi indicator flashes slowly	70	305	mA
Quick Connect Network Status (EZ Network)	The module is in the fast network configuration state, and the Wi-Fi indicator flashes quickly	60	300	mA
Network connection idle state	The module is connected to the network and the Wi-Fi indicator is always on	40	270	mA
Network connection operation status	The module is connected to the network and the Wi-Fi indicator is always on	50	280	mA
Disconnected status	Module is offline	100	260	mA

RF features

Basic RF features

Parameter	Description
Frequency band	2.412 GHz to 2.484 GHz
Wi-Fi standard	IEEE 802.11b/g/n (channels 1 to 14)
Bluetooth LE standard	Bluetooth LE 4.2
Data transmission rate	802.11b: 1, 2, 5.5, or 11 (Mbit/s)
	802.11g: 6, 9, 12, 18, 24, 36, 48, or 54 (Mbit/s)
	802.11n: HT20 MCS0 to MCS7
Antenna type	Onboard PCB antenna with a gain of 1.5 dBi

Wi-Fi output power

Table 4 Power during constant transmission

Parameter		Minimum Value	Typical Value	Maximum Value	Unit
Average RF output power, 802.11b CCK mode	1 Mbit/s	N/A	20	N/A	dBm
Average RF output power, 802.11g OFDM mode	54 Mbit/s	N/A	17	N/A	dBm
Average RF output power, 802.11n OFDM mode	MCS7	N/A	14	N/A	dBm
Frequency error		–10	N/A	+10	ppm

Wi-Fi RX sensitivity

Table 5 RX sensitivity

Parameter		Minimum Value	Typical Value	Maximum Value	Unit
PER < 8%, 802.11b CCK mode	1 Mbit/s	N/A	–91	N/A	dBm
PER < 10%, 802.11g OFDM mode	54 Mbit/s	N/A	–75	N/A	dBm
PER < 10%, 802.11n OFDM mode	MCS7	N/A	–72	N/A	dBm

Mechanical dimensions and production instructions

Mechanical dimensions

Wi-Fi & Bluetooth Low Energy Remote Control

Figure 3 WB3S mechanical dimensions

Production Instructions

Storage conditions for a delivered product are as follows:

The moisture-proof bag is placed in an environment where the temperature is below 30°C and the relative humidity is lower than 85%.
The shelf life of a dry-packaged product is six months from the date when the product is packaged and sealed.

Precautions:

Throughout the production process, each involved operator must wear an ESD wrist strap.
During the operation, strictly protect the product from water and stains.

Recommended oven temperature curve

Wi-Fi & Bluetooth Low Energy Remote Control

Schematic diagram

Wi-Fi & Bluetooth Low Energy Remote Control

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