Digital LED Electronic Clock Alarm DIY Soldering Kit experimental more than 15mA4

more than 15mA4

·         1-to-8 Bidirectional translating switches

voltage regulator

With Semtech SX1276 at its core

Digital LED Electronic Clock Alarm DIY Soldering Kit experimental more than 15mA4AT89C2051 based of four electronic clock kit Supply voltage: 3V ~ 6V PCB Size: 52 x 42mm Function: Seconds correction (for precise School) Switch to every minute independent display interface whole point of time (8 20 o'clock chime can be turned off) Two alarm settings (you can turn off the alarm function) Feature: 0. 56 inch special red digital clock for display Import AT89C2051 for master chip 1. 2mm thick PCB made from military grade FR 4 board