1. Introduction
HS-UNO-EXA3 (expansion board) is a้ ๅฅ expansion board designed for the development board Arduino Uno, integrating the pins of the development board on a single PCB circuit board.This expansion board is compatible with all the HELLO STEM UNO series development boards.The circuit board is equipped with a PH2.0 interface and also retains pin headers to meet the different wiring requirements of users.Can achieve convenient wiring while preventing, and also allows users to flexibly increase and decrease external expansion modules.
2, Characteristics
1, there are digital IO pin headers (pins from D8 to D13) and analog IO (pins from A2 to A3) pin headers. (It can meet the needs of using Dupont lines to connect expansion modules)
2, There are 5 digital IO ports with PH2.0 3P sockets (D3, D10, D11, D12, D13) and 2 analog IO ports with PH2.0 3P sockets (A2, A3), as well as 2 PH2.0 4P sockets, 2 for driving motors with PH2.0 2P sockets, and a PH2.0 2P socket that can be connected to a battery box.
3, It has a 3.3V power pin that can be used for modules with small external current requirements.
A reset button and a button connected to the development board's D2 pin
3, Expansion Board Parsing
Digital IO port PH2.0 3P socket (D3, D10, D11, D12, D13) and digital IO port pin header (D8-D13)
You can specify these IO ports as digital outputs, that is, output high level or low level.The D3 pin can be used as a hardware interrupt pin.D3, D10, D11 pins can output analog signals.
Simulated IO port PH2.0 3P socket (A2-A3) and simulated IO port pin (A2-A3)
You can specify these IO ports for simulated input and simulated input. The simulated input returns a value of (0-1023). The simulated output value is (0-255).
G/V/A4(SDA)/A5(SCL) socket
This socket is convenient for mating with some modules that use a PH2.0 4P interface. (Compatible module: HS-S63-L)TCS342 color sensor, HS-F14LTM1650 four-digit LED digital tube module, HS-F15LTM637 four-digit clock digital tube module, HS-F19LOLED display, HS-F21LLCD1602 display, )
GND/A1/A0/VCC socket
The socket is convenient for connecting with some modules that use a PH2.0 4P interface. (Compatible module: HS-SR04L)Ultrasonic Sensor)
Left motor PH2.0 2P socket and right motor PH2.0 2P socket
This socket is convenient for connecting with some motor modules using PH2.0 2P interface.
RESET reset button
Press it to reset the program, preventing it from freezing.
D2 button
Connect the trigger button to the 2nd pin of the development board, which can be made to work through the program.