DIY Electronic Kits LED Digital Tube Calculators 51 Microcontroller Control Resistance Conversion DIY Soldering Projects

DIY Electronic Kits LED Digital Tube Calculators 51 Microcontroller Control Resistance Conversion DIY Soldering Projects

Product introduction:

1. 7-digit digital display

2、2 pcs of No.7 battery power supply (without battery, you need to prepare yourself)

3、Automatic shutdown in 30 seconds without action

4、Addition, subtraction, multiplication and division operations

5, Conversion, open the root sign

6, 4-ring, 5-ring resistance conversion

7, Arithmetic function

8, 3 kinds of display: green, red, blue (the color of the digital tube display, you can choose)

Non-finished products, is diy welding kit, need some welding skills, can provide product instructions