Wireless module
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Type-c5V Charging and discharging integrated module 3.7V 4.2V18650 lithium battery charging booster power supply board protection
Max. 5V1.2A charging current
5V output is suitable for small currents
Automatic switching/normally open output
Input/output indicator light
3.7V lithium charge full 4.2V/ suitable for 18650 polymer etc
Smaller than the 18650 battery cross-section charging module, but also with discharge, is our carefully designed a replacement 4056 and other linear charging module. Compare 4056/4057 and other linear charging technologies. The charging temperature control of this module can be said to be off ten streets. The key point is that the length, width and height are only 16*12*4.4mm. Using Type-c port, you can input and output. The downside is that chips are expensive.
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TTGO T-Energy T18- WiFi and Bluetooth module 18650 battery ESP32 WROVER development board
The LG 3000 mAh 18650 battery can keep the esp32run for more than 17 hours.
18650 Charging system integration.
Indicate inside LED (green means all and red means charge)
Charging and working can be done simultaneously.
1 Switch can control the power supply.
1 extra programmable (with gpio16[to do])
0.5A charging current
Output of 1A
JXDND
Overcharge protection
Over-discharge protection
All esp32 pin out
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TP4056 1A Lithium battery charging board module TYPE-C USB interface charging protection two-in-one
The circuit board has charging function and battery discharge protection function to discharge while charging
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SYN480 315M 433M superheterodyne wireless receiving security access stage lighting remote control module
The RX480 receiving module adopts SYN480 chip and supports ASK and OOK modulation modes. The receiver module features high sensitivity (-107dBm), low power performance, and a high dynamic range (greater than 60dB). The module adopts high integration chip, built-in front-end low noise amplifier, mixer, filter, frequency synthesizer and other circuits, which can optimize the signal to the maximum extent.
According to different application requirements.
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RF-Nano compatible with ATMEGA328P Nano V3.0 Integrated NRF24L01 wireless CH340 serial port module
The original uses QFN32 package ATMEGA328P-MU chip
The improved version is replaced by the ATMGEA328P-AU chip packaged with QFP32.
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Precision 5V700mA(3.5W)12V2A isolated switching power supply ACDC step-down module 220 to 5V
Function features and parameters are introduced
This power supply is an isolated industrial module power supply, with temperature protection, overcurrent protection and short circuit protection, high and low voltage isolation, AC85~265V wide voltage input, 431 precise voltage regulator DC5V output, small size, stable performance, cost-effective
Input voltage: AC 85 ~ 265v 50/60HZ
Output voltage: DC5V (±0.2V)
Output current: 700mA
Power rate: 3.5W
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NRF24L01+ Wireless module Power enhanced SI24R1 2.4G wireless receiving communication module
Product information Low operating voltage 1.9~3.6V Low voltage operation High speed 2 Mbps Multi-frequency 125 frequency points, to meet the multi-point communication and frequency hopping Ultra-small built-in 2.4GHz antenna Product size 28.9*15.2mm Product Weight 2.1g Product description Open ISM frequency band, Z large 0dBm transmission power, license free use. Supports six channels of data reception 1. Low operating voltage: 1.9~ 3.6V Low voltage operation 2. High speed: 2M... -
Mini NRF24L01+ Wireless module Power enhanced 2.4G wireless transceiver module
Product information Low operating voltage 1.9~3.6V Low voltage operation High speed 2 Mbps Multi-frequency 125 frequency points, to meet the needs of multi-point communication and frequency-hopping communication built-in 2.4GHz antenna Ultra-small built-in 2.4GHz antenna Product size 18*12mm Product weight 0.4g Product description Provide schematics, PID program NRF24L01 is a single chip transceiver chip operating in the 2.4-2.5GHz universal ISM band. Wireless transceivers inc... -
LM2596S Adjustable DC-DC buck power module Stabilizer board 3A 12V/24V to 5V/3.3V
Product model :LM2596S DC-DC buck module
Input voltage :3.2V~46V (recommended for use within 40V)
Output voltage :1.25V~35V
Output current :3A (large)
Conversion efficiency :92% (high)
Output ripple :<30mV
Switching frequency :65KHz
Operating temperature :-45°C~ +85°C
Size :43mm * 21mm * 14mm
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High precision Microvolt/Millivolt voltage amplifier Small Signal instrumentation amplifier AD620 transmitter
Using the AD620 as the main amplifier, it can amplify microvolts and millivolts. Magnification 1.5-10000 times, adjustable. High precision, low misalignment, better linearity. Adjustable zero to improve accuracy. Can be used for AC, DC model amplification.
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Hifi-level 2.0 stereo Bluetooth digital power amplifier board TPA3116 50WX2 speaker audio amplification with filter
Product name: HIF| Step filter 2x50W Bluetooth digital power amplifier board
Product model: ZK-502C
Chip scheme: TPA3116D2 (with AM interference suppression function)
Filter or not: Yes (the sound is more round and clear after filtering)
Adaptive power supply voltage: 5~27V (optional 9V/12V/15V18V/24V adapter, high power recommended high voltage)
Adaptive horn: 30W~200W, 402, 802Ω
Number of channels: Left and right (stereo)
Bluetooth version: 5.0
Bluetooth transmission distance: 15m (no occlusion)
Protection mechanism: over voltage, under voltage, overheating, DC detection, short circuit protection
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HC-05 HC-06 Bluetooth to Serial Adapter module Group CSR Master-Slave 51 MCU new original
AT instruction set
HC-05 embedded Bluetooth serial communication module (hereinafter referred to as module) has two working modes: command response work
Mode and automatic connection mode, in the automatic connection mode module can be divided into Master (Master), Slave (Slave)
And Loopback (Loopback) three job roles. When the module is in automatic connection mode, it will automatically be set according to the prior setting
The mode of connection for data transmission; When the module is in command response mode, all the following AT commands can be executed
Send various AT instructions to the module, set control parameters for the module or issue control commands. External pins through the control module
(PIO11) input level, which can realize dynamic conversion of module working state.
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Phone
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Skype
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Skype
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