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PSF-B01 Application Guide
1.Product Introduction
PSF-B01
is a single-channel ultra-low-power Wi-Fi switch module based on ESP8285.
It's specially designed for mobile devices and Internet of Things applications with the
most competitive package size and ultra-low energy consumption technology in the
industry. Connecting users' devices to the Wi-Fi wireless network for remote or local area
network communication to achieve networking. This module can be used as a switch
control for a single household appliance. Either it can be controlled by the device button,
or remotely controlled by connecting to APP (eWeLink).
PSF-B01 has various packaging methods, and the antenna supports ceramic
antennas. It can be widely used in smart grid, smart transportation, smart home,
handheld devices, industrial control and other fields.
Product Features:
•
Built-in 32bit MCU, and can double as an application processor
•
Support wireless 802.11 b/g/n standard
•
Wi-Fi @2.4 GHz, support WPA/WPA2 security mode
•
+20.5dBm maximum outputpower in 802.11b mode
•
Support devicebutton control
•
Support timer schedule
•
Support Wi-Fi remote control
•
Support compatible pairing mode /quickpairing mode
•
Support OTA upgrade
2.Electrical Characteristics
2.1 Rated parameters
Conditions: VDD=3.3V±10% , GND=0V; test at room temperature 25°C.
Type
Model
Main chip
Hardware interface
Operating Voltage
Parameters
PSF-B01
ESP8285
UART, GPIO
2.7V~3.6V
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Related Manuals for Sonoff ESP8285 PSF-B
Summary of Contents for Sonoff ESP8285 PSF-B
- Page 1 Either it can be controlled by the device button, or remotely controlled by connecting to APP (eWeLink). PSF-B01 has various packaging methods, and the antenna supports ceramic antennas. It can be widely used in smart grid, smart transportation, smart home, handheld devices, industrial control and other fields.
- Page 2 GPIO drive Max: 12mA capability Average current: ≈80mA , Maximum working current: Working current 210mAStandby: <200uA Operating 0℃~45℃ temperature Storage condition Temperature: -10℃~75℃ , Relative humidity: 20%RH~80%RH Wireless network STA/AP/STA+AP type Encryption WEP/WPA-PSK/WPA2-PSK mechanism Encryption type WEP64/WEP128/TKIP/AES Firmware upgrade OTA remote upgrade 2.2 Wi-Fi parameters Conditions: VDD=3.3V±10% , GND=0V ;...
- Page 3 OFDM) 802.11n: -72 dBm (MCS7) Antenna type Ceramic patch antenna 3.Module Type and Pin Definition 3.1 Module type PSF-B01 top view: 3.2 Sequence of pin arrangement PSF-B01 module provides single-channel switch control interface, Wi-Fi status light interface, UART serial port.
- Page 4 Top view of module pins: Bottom view of module pins:...
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Page 5: Pin Definition
Pin definition and function description Name Features Wi-Fi Antenna Note: PSF-B01 cannot be used ADC interface, input range: 0-1V Chip enable terminal high level: valid; low level: closed. Note: An external pull-up resistor of 1~10K, connect a 100nF capacitor to the... - Page 6 GPIO16 GPIO14 Relay switch: active high, power-on default low level. Note: As a GPIO12 switch button, there will be a period of high level at the moment of power-on, which requires a pull-down (1~4.7K) resistor to ground. Wi-Fi status indicator light, connect LED in series with current limiting STATUS resistor to 3V3 Note: Chip configuration pin needs to pull down (1~4.7K) resistor to...
- Page 7 10K resistor to 3.3V, and connect a 100nF capacitor to ground. 4.Function Description 4.1. Module function PSF-B01 module can be used as a single-channel switch, which can control the switch locally or remotely through APP. The following is the function description: 1.
- Page 8 5. Timer: including single, count down, repeat, and loop timer, see details in 4.5. 6. Power-on status configuration: The power-on switch status can be configured on or off through the APP, and the default power-on status is off. 4.2. Wi-Fi status indicator light description The flashing mode of the Wi-Fi status light on the device represents the its current network working status.
- Page 9 3. No Server: The device has been connected to the router, but it cannot connect to the server (also known as”cannot access the Internet”). 4. Unregistered: The device has not been bound to account. The device needs to be bound to the eWeLink account to connect to the cloud server.
- Page 10 4. Looptimer: repeat the operation every setting time. 4.5 Timer function description PSF-B01 supports timer. The eWeLink APP provides four timing modes to facilitate the use in more scenarios. 1. Single timer: This is the most common timing setting, allowing users to set the work schedule of the device.
- Page 11 Input frequency 2412 2484 Ω Output impedance Input reflection PA output peak value power when at 15.5 16.5 17.5 72.2Mbps PA output peak value power in 802.11b 19.5 20.5 21.5 mode 5.1 Sensitivity Description Typical value Unit mA CCK 1Mbps CCK 11Mbps 6Mbps(1/2BPSK) 54 Mbps (3/4 64-QAM)
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Page 12: Pcb Design
Description Typical value Unit mA OFDM, 6Mbps OFDM, 54Mbps HT20, MCS0 HT20, MCS7 Note: 1. 2Mbps is measured in the 802.11n mode, the MCS =7, the GI = 200uS. 2. Up to + 21.5dBm output powerin 11b mode. 6.PCB Design Precautions for PCB layout and module layout: 1. -
Page 13: Packaging Information
4. Place the module’s power supply (VCC) pin capacitance and other module pin capacitances, resistors as close as possible to the module pins, and the tracepath should be short. 7.Packaging Information Package size diagram:...
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