Modul cu 8 relee alimentare 24v
Modul 8 relee cu optocuplor:
- Semnal TTL - Trigger LOW sau HIGH, selectabil - jumper
- Semnalul logic aplicat trebuie sa fie tip OPEN COLECTOR (fara pull up din microcontroler) altfel nu functioneaza mai ales cu nivele mici de semnal (datorita modului de constructie optocuplor de pe placa releelor)
- Izolare galvanica prin optocuplor
- Putere Maxima 2.5KW pentru (250AC - 10A)
Nota releul trebuie alimentat la tensiunea de lucru specificata 24VThis is a 8-Channel Relay interface board, Be able to control various appliances, and other equipments with large current. It can be controlled directly by Micro-controller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
8-Channel Relay interface board, and each one needs 15-20mA Driver Current 5e73e al3x
Equipped with high-current relay, AC250V 10A ; DC30V 10A
Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
Indication LED s for Relay output status
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Modul cu 1 releu alimentare 12V, contact 30A
- Testat si functioneaza 100% cu orice Raspberry Pi, ESP8266
- Semnal TTL - Trigger LOW sau HIGH, selectabil - jumper
- Semnalul logic aplicat trebuie sa fie tip OPEN COLECTOR (fara pull up din microcontroler) altfel nu functioneaza mai ales cu nivele mici de semnal (datorita modului de constructie optocuplor de pe placa releelor)
- Izolare galvanica prin optocuplor
- Putere Maxima 7.5KW pentru (250AC - 30A)
Nota releul trebuie alimentat la tensiunea de lucru specificata 12V
Input Part:
VCC: Connect to power positive (according to the relay voltage range)
GND: Connect to power negative
IN: Relay module trigger pin (high/Low level trigger) 5e73e al3x r3d
Onboard 12V, 30A,250VAC
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Releu reed - DIP
- releu reed alimentare 3V, 5V, 12V sau 24V
- suport curent contact max 1A (max absolut)
- suport tensiune maxima 100V
- dimensiune redusa de 7,9mm x 19,9mm
(necesita dioda externa pentru sarcini inductive)
Releele de 3V si 5V se pot comanda direct de pe pinii digitali microntroler (consuma cat un led)
Specficiati modelul cand comandati.
Model SIP-1A03
Color Black
Material Plastic + copper
Contact: Open style
Rated voltage: DC 3V (inclusiv 3.3V)
DC resistance: 350 450ohm
Model SIP-1A05
Color Black
Material Plastic + copper
Contact: Open style
Rated voltage: DC 5V
DC resistance: 450 550ohm
Model SIP-1A12
Color Black
Material Plastic + copper
Contact: Open style
Rated voltage: DC 12V
DC resistance: 900 1100ohm
Model SIP-1A24
Color Black
Material Plastic + copper
Contact: Open style
Rated voltage: DC 24V
DC resistance: 1800 2200ohm
Common specs
Operating current: 0.01A (max)
Release current: 0.001A (min)
Contact switching voltage: 100V (max)
Contact switching current5A (max) 5e73e al3x
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RTC DS3231
(modul cu bateria inclusa)
Description
Raspberry Pi DS3231 foreign high precision clock module
Pay attention to the module Arduino motherboard can also be used.
The module itself can be adapted to 3.3 V and 5 V system, no level conversion, it is super convenient!
2. Features:
1 to 40C to + 85C temperature range, timing accuracy in a plus or minus 5 PPM (+ - 0.432 SEC day)
2. To provide continuous timing battery backup
3. Low power consumption
4. The device compatible with DS3231 encapsulation and function
5. Complete the clock calendar function including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year
6. Two calendar clock al3x 5tq
7.1 Hz and 32.768 kHz output
8. Reset the output and input button to tremble
9. High speed (400 KHZ) the I2C serial bus
10. + 2.3 V to + 5.5 V power supply voltage
12. - 40C to + 85C temperature range
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PWM driver Regulator Variator turatie, 10-60V, DC 40A
Features:
1: Installation method: panel type, and wiring according to the wiring diagram
2: Control the speed of the DC brushed motor, forward, stop, and reverse
3: Simple to use, with wiring diagram on the details page
4: Widely used
5: Fine workmanship, good performance
Product technical parameters:
Input voltage range: DC 10V-60V
Rated current: use within 6A of continuous working current
Function: Control the speed of DC brushed motor, forward, stop, reverse
Installation method: panel type, and wiring according to the wiring diagram
DC gear motor speed regulator in5ta al3x d51v
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ATENTIE !
Doar in cazul in care driverul este folosit pentru control motoare curentul maxim suportat este de cel putin 2 ori curentul nominal specificat pe motor.
Adica acest driver suporta motoare ce au curent nominal de max 20A !!! pentru ca trebuie luat in calcul si pornirea lui in sarcina maxima (au fost cazuri).
Daca nu se respecta acest lucru nu ofer garantie !!!
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Baterie 9V 6F22 sursa step up lithium ion
Acest modul inlocuieste perfect o baterie de 9V - 6F22 cu un acumulator standard de 3.7V Lithium-Ion (orice model).
Cu un acumulator 18650 (de notebook mobil) chiar si SH cu capacitate intre 1000-2500mA, orice aparat montat cu asa ceva, aproape ca "niciodata" nu mai trebuie schimbata bateria !!!
Cu acest modul se mareste foarte mult timpul de folosire, cu un acumulator nou, timpul poate fi pana la 10 ori mai mult (in functie de modul de folosire)
Acest modul are 2 functii, incarcare acumulator Lithium-Ion cu TP4056 si conversie sursa DC de la 3.7V la 9V al3x
Unde se foloseste:
- Aparate de masura si control
- multimetre digitale
- telecomenzi
- aparate tester ethernet
- ceasuri mari de perete
- radiocomenzi (RC)
- diverse jucarii
. . . etc
- Din fabrica curentul de incarcare este setat la 500mA
- Se poate modifica seta curentul de incarcare intre 50mA - 1000mA prin inlocuirea rezistentei (vezi poza - tabel)
Description:
Board size: long 34mm* wide 17mm* thick 5.5mm;
Conversion efficiency: 95%;
Charging voltage: 5V, charging red light, full of blue light from the stop;
Battery charge termination voltage: 4.2V (error 1%);
Charging interface: USB Micro; 5y5sa y0p l1th1 litiu
Charge current: 500mA (change R3 adjust current);
Static load: 0.2ma;
Battery type: 3.7V lithium battery;
Output voltage: 9.2V (error 1%)
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Motor robot si cutie de viteza
Description
Operating voltage: 3V 12VDC (recommended operating voltage of about 6 to 8V)
Maximum torque: 800gf cm min (3V)
No-load speed: 1:48 (3V time)
The load current: 70mA (250mA MAX) (3V)
This motor with EMC, anti-interference ability. The microcontroller without interference.
Size: 7x2.2x1.8cm /m0to /r08o al3x r3d
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Senzor HR202L umiditate aer
Specifications:
HR202 humidity resistance is the use of organic polymer materials of a new humidity sensor,
humidity sensing range, stable performance, long-term use, can be applied
to warehousing, cars,indoor air quality control,
building automation, medical, industrial control systems and wide range of
applications such as scientific research.
Parameters: (at 1kHz) Unit: OhmOperating range: 20 ... 95% RH 0 ... 60
Supply voltage: 1.5V AC (Max sine wave)
Operating frequency: 500Hz ... 2kHz
Rated Power 0.2mW: (Max sine wave)
value: (at25 1kHz 1V AC 60% RH sine wave) 31.0k
Impedance range: (at25 1kHz 1V AC 60% RH sine wave) 19.8 ... 50.2k
Humidity measuring accuracy: 5% RH (5en50r t3rm1 al3x in5ta r3d)
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Sursa step down 0-8A
- La acesta sursa se regleaza atat tensiunea cat si curentul
Pe scurt:
1. In: DC 7-32V
2. Out:DC 0.8-28V continuously adjustable
3. Current iesire: 8A (max 10A - testat)
4. Curent constant: 0.2-8A (max 10A - ajustabil)
5. Power Max 300W
6. Am pus in ultima poza un test cu sursa la un curent MAXIM de 10A (sarcina artificiala de 10A la 5V)
Nota: Peste 80W sau peste 75-80C (temperatura radiatorului), necesita racire suplimentara cu un ventilator.
Description:
1. Module Properties: non-islated step-down constant current, constant voltage module (CC CV) charging module
2. Input voltage: DC 7-32V
3. Output voltage:DC 0.8-28V continuously adjustable
4. Output Current: 8A (max 10A)
5. Constant current range: 0.2-8A ( max 10A - adjustable )
6. Turn lamp current: constant current value * ( 0.1 ) , turn the lamp current and constant value, such as constant current value is 3A, turn the lamp current is set to a constant current is 0.1 times (0.1 * 3A = 0.3A).
8. Output Power: Maximum power is about 300W
9. Conversion efficiency: up to about 95%
10. Operating frequency: 300KHZ
11. Output ripple: 20M bandwidth
12. Input 24V Output 12V 5A ripple around 50mV (Excluding noise)
13. Output short circuit protection : Yes, constant current
14. Input Revers Polarity Protection: None
16. Wiring: Terminal
20. Dynamic response speed: 5% 200uS
17. No-load current: Typical 20mA (24V switch 12V)
18. Load regulation: + - 1% ( constant )
19. Voltage regulation: + - 1%
21. Operating temperature: Industrial grade (-40 C to +85 C)
22. Size (approx): 65 x 47 x 22mm(L x W x H) 5y5sa d0w7 al3x
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Usb tester max 60W, 4-20v cu 3A
Tester universal USB Type A (usb normal) ce suporta si fast charging QC, PD max 20V cu max 3A !
Features:
1.This is the mini USB meter.
2.It can clearly display all the data.
3.Can easily measure the USB ( PC USB, cell phone charger, car charger , mobile power , etc. ) port and device operating current and the output voltage charge-discharge capacity, performance, and judge the performance of the charging cable charging equipment, this tester can meet the requirements !
Description:
Fit to factories, laboratories and personal use, wide range and Easy to
use, easy to take alone, no additional power supply, Plug and play.
Specifications:
Material: Plastic
Color: Blue, Grey
Size: 59*23*13.5mm
DIY Supplies: Electric
Display Type: Digital Only
Code Accuracy class: Plus or minus 1%
Operating temperature: normal
Power Supply: AC
Voltage: 4-20V+ -1%
Current: 0-3A+ -1%
Time: 0-99H
l1th1 c0n al3x v0l7 ampermetru, powerbank pc lcd display watmeter
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Senzor distanta IR obstacole pentru robot, Arduino, modul, shield, IR
Item Description:
Parameter:
1. When the module detects an obstacle in front of the signal, the circuit board green indicator light levels while continuing output low signal OUT port, the module detects the distance 2 30cm, detection angle 35 , the distance can detect potential control to adjust, adjust potentiometer clockwise, the detection distance increases; counterclockwise adjustment potentiometer, detection distance decreases.
2, the sensor active infrared reflection detection, target reflectivity and shape of the detection distance of the key. The minimum detection distance which black and white max; small area of the object distance is small, a large area from the Grand.
3, the sensor module output port OUT can be directly connected with the microcontroller IO port can also be driven directly to a 5V relay; Connection: VCC-VCC; GND-GND; OUT-IO
4, the comparator using LM393, job stability;
5, can be 3-5V DC power supply for the module. When the power is turned on, the red power indicator light;
6, with 3mm screw holes for easy mounting, installation;
7, the circuit board size: 3.2CM * 1.4CM
8, each module in the delivery has threshold comparator voltage adjustable via potentiometer, special circumstances, please do not adjust the potentiometer.
Interface:
1. VCC external 3.3V-5V voltage (5v microcontroller and can be directly connected to 3.3v MCU);
2. GND an external GND;
3. OUT small board digital output interfaces (0 and 1); (5en50r r08o al3x r3d
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Termostat digital controler temperatura, -20C la 100C - model W1209
Curent continuu DC !
- W1218 - 12V (versiunea de 12V-DC) - modelul STANDARD
- W1218 - 14-36V (versiunea cu plaja de la 14V pana la 36V-DC)
va rog sa specificati modelul cerut
Modelul standard de 12V costa 25 lei, restul versiunilor costa 45 lei
Termostatul este disponibil:
- standard cu alimentare la 12V DC - suporta max 12.8V DC pe intrare (nu se recomanda la auto depaseste 12.8V ! )
- si V2 ce permite alimentare de la 14V, 15V, 18V, 22V,24V, 28V, 30V ... pana 32V DC (inclusiv Auto 12V si 24V DC)
Optional:
- Alimentator (AC-220) out DC 12V (in limita a 1 buc la un modul) + 20 lei
Acest termostat are doua functii de control temperatura: incalzire sau racire, acest lucru se seteaza din meniu. Aceste functii nu merg niciodata in acelasi timp, ori controleaza incalzire (centrala, aeroterma . . . etc) ori racire (frigider, combina . . . etc)
Daca doriti un termostat care controleaza in acelasi timp ambele moduri racire si incalzire (acvariu, clocitoare) vedeti in anunturile mele termostatul STC1000
Nota:
- vine cu manual de utilizare
- Senzorul de temperatura are teaca de metal (ca in poza) este inclus si este izolat (poate sta in apa)
- dimensiune senzor temperatura: grosime 4mm si lungime 20mm
- Are o singura iesire de comanda 1 x 20A (max) 250 V
- temperatura reglabila -50 la 110C
- Termostatul arata ca in poza si este nou
- Atentie pentru a comuta electric sarcini mai mari de 20A peste capacitatea termostatului (Aer conditionat, radiatoare, boiler, pompe de putere ... ) folositi circuite de comanda de puteri mai mari corect dimensionate, comandate de catre termostat (folosirea iesirii releului)
Specificatii termostat digital:
1. gama de temperaturi: -50 - +110 C
2. compatibil cu sondele de tip rezistiv NTC (inclusa)
3. rezolutie: 0,1 grade Celsius
4. precizie Histerezis: 0,1 grade C
5. precizie de masurare: 0.1 grade Celsius
6. rata de refresh: 0,5 sec
7. consum de curent: 35mA - 65mA (t3rm1 al3x)
8. display digital 0.28 inch; rezolutie zecimala: 3 digiti
9. alimentare: 12V DC
10. temperatura de operare: -10-60 C, humidity 20% -85%
11. dimensiune : 48.5 * 40mm
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Arduino UNO R3 - CH340G
Cablu USB este inclus
Arduino UNO R3 - compatibil cu mufa Tip B - USB
Arduino UNO R3 (ultima versiune) este o platforma de procesare open-source, bazata pe software si hardware flexibil si simplu de folosit. Consta intr-o platforma de mici dimensiuni construita in jurul lui Atmega328 si este capabila de a prelua date din mediul inconjurator printr-o serie de senzori si de a efectua actiuni asupra mediului prin intermediul luminilor , motoarelor, servomotoare, si alte tipuri de dispozitive mecanice. Atmega328 este capabil sa ruleze cod scris intr-un limbaj de programare care este foarte similar cu limbajul C++. (a5du1 al3x)
Features:
ATmega328 microcontroller
Input voltage - 7-12V
14 Digital I O Pins (6 PWM outputs)
6 Analog Inputs
32k Flash Memory
16Mhz Clock Speed
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Tester universal USB Tip-C, micro USB si Tip A (usb normal) ce suporta si fast charging QC, PD max 32V cu max 6.5A !
Key button operation instructions
1) Short press of the button is to switch the screen function
2) Quickly double-click the capacity to reset to zero (mAh)
3) Quick three-click battery reset and reset (Wh)
4) Four quick clicks are timing reset to clear the current group ( ) Quick five clicks are to change the cumulative data storage group number (NO.X)
6) Press and hold the button to reset the capacity, power, and time to reset the current group.
(mAh, Wh, ) When short press on the System Settings setting interface, long press the button to enter the setting, and then short press to switch the setting column, and then long press in a certain column to execute the column, when the number of the execution column jumps and flashes, double-click is an addend. Adjust, click is subtraction adjustment, long press during addition or subtraction adjustment is continuous addition or continuous subtraction, after adjusting for a while, the word OK will be displayed and the system will automatically save the value, and continue to wait for a while to automatically exit the setting interface
7.1 >32.0V (OVP/Overvoltage Protection)
7.2 <0.00V (LVP/Low Voltage Protection)
7.3 >8.00A (OPC/Overcurrent Protection)
7.4 Scrren Rotation
7.5 Default Setting
7.6 Clear Data
7.6 USB IAP/USB upgrade
7.7 Exit
8) When short press to the curve interface, long press the button to switch the refresh curve update speed 0.5S 1S 2S 5S several gears, and double-click the button quickly to stop and continue
APP Download address
1.http://www.mediafire.com/folder/31bc15uhq8odb/E-meter
2, IOS APP: search E_test on iphone APP store to download
3. Android APP: search E-test at Google play to down load
l1th1 c0n al3x v0l7 watmetru, voltmetru, ampermetru, powerbank pc lcd display watmeter powermeter
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Wattmetru 0-200V cu sunt de 50A - specificatii generale:
(Suntul e inclus in pret)
Acest model este configurabil din meniu unde se alege suntul folosit 50A, 100A, 200A si 300A, in cazul de fata trebuie s-a verificati ca a fost configurat pe 50A
Atentie pentru montarea la baterie in sisteme solare (etc) nu se alimenteaza pe cele 2 fire separat decat daca tensiunea bateriei e sub 8V !!! respectati schema din poza (sau manual)
Atat in poza cat si manual aveti desenat "baterie" si "sarcina" pentru montare in sisteme regenerabile (foto, eoliant etc) "bateria" din schema inseamna invertorul (MPPT ... charger .. etc) iar "sarcina" inseamna bateria dumneavoastra (12V, 24V, 48V, 96V ...) Am pus si o schema pentru configuratie sistem solar de exemplu
Acest watmetru se poate monta la ORICE atat timp cat se respeceta specificatiile tehnice cum ar afi: NUMAI tensiune continua (NU alternativ) avand maxim 200V iar curent max in functie de sunt 50-300A
Daca nu se respecta cele de mai sus, nu ofer garantie.
- Wattmetru de curent continuu DC 0-200V (cand este alimentat sub 8V necesita alimentare separata)
- Putere maxima 10Kw (deoarece suntul e de max 50A)
- Functii de masurare: tensiune, curent, putere masurata in sarcina cat si energia consumata in unitate de timp (wh)
- se poate seta parametri bateriei si se poate vdea cand e goala sau plina
- modul de conexiune cabluri este afisat in poze (conform pozei de pe spatele aparatului)
- Functie de iluminare pe intuneric (LCD iluminat)
- dimensiune cote (mm) in ultima poza
- Ideal pentru panouri solare / masina auto ... / 5v, 9v, 12v, 18v, 24v, 30v, 48v, 50v, 72v voltmetru ampermetru curent tensiune putere
Nota: Tine minte puterea consumata si dupa oprirea alimentarii. Se comporta ca un contoare de energie electrica.
Video Youtube:
https://www.youtube.com/watch?v=pEnExPJGqlw
Function description
Voltage Measuring range: 0-200V. (when the test voltage is < 8V, please use the independent power supply mode)
Voltage Minimum resolution:0.01V.
Voltage The starting test voltage: 0.05V
Voltage Measurement accuracy:1%
Current Measuring range: 0-300A(Type: PZ-015) can set 50A, 100A, 200A,300A four range depend on the external shunt, the factory
default is 100A.
Current Minimum resolution: 1mA
Current The starting test current: 10mA
Current Measurement accuracy:1%
Power Measuring range: 0-60000W
Power Minimum resolution: 0.01W
Power The starting test power: 0.2W
Power Measurement accuracy:1%
Impedance = Voltage/ Current
Impedance Measuring range: 0-1000O (When over the test range or the current is zero, it display --- )
Impedance Minimum resolution: 0.1O
Impedance Measurement accuracy:1%
Internal resistance= (Full voltage Bring load voltage) / Bring load current, when the bring load voltage is larger than the
maximum voltage, the internal resistance is zero.
Internal Resistance Measuring range: 0-999mO (Display format: 999mO, when over the test range or the current is zero, it display --- .)
Internal Resistance Minimum resolution: 1mO
Voltage Measurement accuracy:1% v0l7 al3x
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Driver Motor 30A, 1 x VNH2SP30
Caracteristicile Produsului
Motor driver: VNH2SP30
Canale : modul cu 1 canal
Tensiunea minima de alimentare: 5.5 V
Tensiunea maxima de alimentare: 16 V
Curent pe canal: 14 A
Curent maxim (peak) pe canal: 30 A
Curent prin ambele canale : 25 A
Senzor curent : 0.13 V/A
Frecventa maxima PWM: 20 kHz
Description:
This is essentially a ramped up version of our Ardumoto motor driver shield.
For this monster shield we've replaced the L298 H-bridge with a pair of VNH2SP30 full-bridge motor drivers.
We've also beefed up the support circuitry so this board is capable of driving a pair of high-current motors!
The VIN and motor out are pitched for our 5mm screw terminals (not included), making it easy to connect larger gauge wires.
Note:
When using this board in extreme high-demand applications it may be necessary to improve thermal performance with a heat-sink or fan and to solder the wires directly to the board instead of using a screw terminal (in addition to the myriad other complications present in a high-current system) However,when using the board at currents up to 6A the chips will barely become noticeably warm. d51v al3x r3d
Features:
Power supply: Max 16V
Maximum current rating: 30 A
Practical Continuous Current: 14 A
Current sensing available to Arduino analog pin
MOSFET on-resistance: 19 m (per leg)
Maximum PWM frequency: 20 kHz
Thermal Shutdown
Under voltage and Overvoltage shutdown
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ATENTIE !
Doar in cazul in care driverul este folosit pentru control motoare curentul maxim suportat este de cel putin 2 ori curentul nominal specificat pe motor.
Adica acest driver suporta motoare ce au curent nominal de max 15A !!! pentru ca trebuie luat in calcul si pornirea lui in sarcina maxima (au fost cazuri).
Daca nu se respecta acest lucru nu ofer garantie !!!
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DS18B20 Senzor temperatura digital cablu 1m
Caracteristici tehnice:
Tensiune: 3V - 5.5V (poate fi alimentat și din conexiunea de comunica ie, modul parazit - 2 fire);
Curent: 1.5mA;
Interfa ă de comunica ie 1 Wire;
Memorie ROM de 64biti. t3rm1
Intervalul de temperatură măsurat: de la - 55 C pana la 125 C;
Precizie: 0.5 C pentru temperaturi intre -10 C și +85 C;
Rezolu ie de la 9 la 12 bi i, cu timp de conversie de 750ms la 12 bi i.
Dimensiuni: 6 x 50mm. (5en50r al3x)
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ESP8266-01 - modul
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
ESP 8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.
Features
SDIO 2.0, SPI, UART
32-pin QFN package
Integrated RF switch, balun, 24dBm PA, DCXO, and PMU
Integrated RISC processor, on-chip memory and external memory interfaces
Integrated MAC baseband processors
Quality of Service management
I2S interface for high fidelity audio applications
On-chip low-dropout linear regulators for all internal supplies
Proprietary spurious-free clock generation architecture
Integrated WEP, TKIP, AES, and WAPI engines al3x
Solutions
Supports APSD for optimal VoIP applications
Patented spurious noise cancellation algorithm for integration in SOC applications
Supports Bluetooth co-existence interface
Self-calibrated RF to ensure optimal performance under all operating conditions
Zero factory tuning (e1t35)
No external RF components
Specificationsb g n
Wi-Fi Direct (P2P), soft-AP
Integrated TCP IP protocol stack
Integrated TR switch, balun, LNA, power amplifier and matching network
Integrated PLLs, regulators, DCXO and power management units
+19.5dBm output power in 802.11b mode
Power down leakage current of < 10uA
Integrated low power 32-bit CPU could be used as application processor
SDIOSPI, UART
STBC, 1 1 MIMO, 2 1 MIMO
A-MPDU & A-MSDU aggregation & 0.4ms guard interval
Wake up and transmit packets in < 2ms
Standby power consumption of < 1.0mW (DTIM3)
Help your development more easy.
ESP8266 Serial WIFI Module Forum" Detail about ESP8266
1. High quality & low price
2. LWIP agreement
3. Support 3 modes: AP, STA, AP+STA
4. Perfect and simple AT commands
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