Update: The seller came forward to fix it and very apologetic about the initial problem so I'm changing my rating based on the good Customers have upgraded from 2 stars to 4 stars service. I ordered this two pack but one of them came without a square connector on the board. It's not damaged or broken, it doesn't exist at all! They just didn't solder the connector at the time of manufacture and put it in a pocket with no connector installed. The chips on the board were Philips A series (base address 0x38). Note that you need a pull-up resistor to drive anything with this chip (even to drive a relay via opto I had to use an external pull-up resistor. I have a 3.3kΩ pull -up resistor used when I used 3.3 I /OB it seemed to work fine)
LAFVIN Super Starter Kit for Arduino R3 Mega2560 Mega328 Nano with Detailed Tutorial - Compatible with Arduino IDE
11 Review
REXQualis Comprehensive Starter Kit with Arduino MEGA 2560 & Detailed Tutorial for Arduino IDE Compatibility
11 Review
🎁 Ultimate BBC Micro bit Sensor Starter Kit: Keyestudio 37-in-1 Box with Tutorial, Compatible with V1.5 & V2, Gift for Kids and Adults (Microbit Board Not Included)
11 Review
Gikfun Screw Shield Expansion Board: Enhance Arduino UNO R3 with the EK7007 Add-On
11 Review
M.2 Screw Kit: Easy Mounting for NVMe SSDs on ASUS Motherboards
19 Review
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review
🔧 Premium Repair Replacement Screws & Tools for MacBook Pro Retina 15"/13" - Complete Bottom Case Set
10 Review
36-Pack Black Rubber PC CPU/Case Fan Screws/Rivets Set for Computer
11 Review