Review on Huayao Channel Module Optocoupler Raspberry by Sarah Greenwood
Lots of online support articles
This is great value for money. I've found that these relays not only require VCC and a common ground from the microcontroller that sends the switching signal to the relay board, but also require a slightly higher switching voltage than specified when all relay gates are active. Search the internet for articles about these relay boards, they are widely available. There are no instructions or information in the packaging, but these can be found on the manufacturer's website.
- Computer components
- New competitors have appeared
New products
Comments (0)
Top products in 🖥️. Single Board Computers
Gikfun Screw Shield Expansion Board: Enhance Arduino UNO R3 with the EK7007 Add-On
11 Review
GeeekPi Raspberry Pi Cluster Case with Cooling Fan and Heatsink for Pi 4 Model B, 3 Model B+ & 3/2 Model B
11 Review
REXQualis Comprehensive Starter Kit with Arduino MEGA 2560 & Detailed Tutorial for Arduino IDE Compatibility
11 Review
55" TV LG OLED55C2RLA 2022 HDR, OLED, dark titanium
38 Review
Another interesting products
🖥️ Helifouner 450-Piece Computer Standoffs Spacer Screws Kit: Ideal for Hard Drive, Motherboard, Fan, Power Graphics & Computer Cases
10 Review
Comprehensive 500pcs Laptop Screw Kit Set for 🔩 IBM HP Dell Lenovo Samsung Sony Toshiba Gateway Acer
12 Review
MacBook Retina 13-inch (A1425, A1502) and 🔩 15-inch (A1398) Bottom Case Screw Set with Pentalobe Screwdriver
11 Review
uxcell 3.5" HDD Screw Black 200pcs for Computer PC Case - Flat Phillips Head - 6#-32 - Hard Drive Fasteners
10 Review