DFRobot Forum Logo
HOME COMMUNITY FORUM WIKI BLOG LEARN
Tags FAQSuggestionsHow to selectTroubleshootingGeneral UNIHIKER3D PrintinguPyCraft Bluno PCB ServicesTelematics Mind+Easy IoT RoboticsFirebeetle ESP32/8266HUSKYLENSRaspberry PiGravityLattePandaArduino

Topics

1514 Views

1 Replies

Shield Requires Both 9V and USB Power—Is This Correct? FAQDFR0144Aftersales FAQSEO FAQ
userHead Schultz.Langley 2025-07-24 10:45:29

10701 Views

9 Replies

Relay Shield for Arduino V2.1 (DFR0144) - Relays not activating ArduinoGeneral DFR0144
userHead Rasmuskjer 2024-08-09 08:19:22

754 Views

1 Replies

Can Arduino with Relay Shield v2.1 read XBee digital I/O? Is a logic level converter needed? FAQDFR0144Aftersales FAQSEO FAQ
userHead Schultz.Langley 2024-07-25 11:12:07

715 Views

1 Replies

Is it possible to use Arduino D4 to control Relay 1? FAQDFR0144Aftersales FAQSEO FAQ
userHead Schultz.Langley 2024-07-25 10:48:12

769 Views

1 Replies

4 Relays Not Cycling After Sketch Upload—What’s Missing? FAQDFR0144Aftersales FAQSEO FAQ
userHead Schultz.Langley 2024-07-25 10:43:54

333 Views

0 Replies

I uploaded the first sketch to arduino, the 4 relays should be turned on and off every second, but nothing happened. What did I miss? DFR0144FAQAftersales FAQ
userHead Yx 2024-07-12 15:04:05

329 Views

0 Replies

Can the Arduino read the digital I/O pin status of an XBee using the relay shield v2.1, considering XBee's 3.3V logic level? DFR0144FAQAftersales FAQ
userHead Yx 2024-07-12 15:04:05

4380 Views

2 Replies

Relay Shield (DFR0144) and LCDKeypad Shield (DFR0009) ArduinoGeneral DFR0144DFR0009
userHead Account cancelled 2024-03-15 23:14:59

Trending

  • 1 RFID Module MFRC522 .Net Gadgeteer
  • 2 DfPlayer recommended speaker impedance?
  • 3 New to DFPlayer (detect when audio clip has finished playing & loud pop upon power on/down)
  • 4 Gravity: Analog EMG Sensor Wrong Readings, SEN0240
  • 5 Beetle ESP32 C3 USB connection issue
  • 6 SEN0257 What type of pressure does it measure?
  • 7 ESP-32-C3 doesn't start with battery supply
  • 8 2-Channel I2C 0-10V DAC Module DFR0971 ESPHome integration
  • 9 EC Voltage is not stable
  • 10 DFPlayer Mini Logic Levels
logo
Information
  • About Us
  • Warranty
  • Terms & Conditions
  • Shipping
  • Payment
  • FAQ
Customer Service
  • DFRobot Distributors
  • Contact us
  • Site Map
My Account
  • Affiliates
  • Specials
  • Coupon