feat(wokwi-lcd1602/lcd-uno): initial lcd1602 test

The screenshot of the lcd1602 is subject to change in the future, so the reference PNG will need to be updated.

Author: urish

.github/workflows/wokwi-test.yml

@@ -37,6 +37,9 @@ jobs:
           - name: ili9341-uno
             path: wokwi-ili9341/lcd-uno
             scenario: ili9341.test.yaml
+          - name: lcd1602-uno
+            path: wokwi-lcd1602/lcd-uno
+            scenario: lcd1602.test.yaml
           - name: microsd-card-esp32
             path: wokwi-microsd-card/sd-esp32
             scenario: sd.test.yaml

README.md

@@ -15,6 +15,8 @@ This repository contains a set of test projects for many Wokwi parts. The tests
   - [STM32L0](./wokwi-dht22/dht22-stm32/)
 - wokwi-ili9341
   - [Arduino Uno](./wokwi-ili9341/lcd-uno/)
+- wokwi-lcd1602
+  - [Arduino Uno](./wokwi-lcd1602/lcd-uno/)
 - wokwi-micro-sd
   - [ESP32](./wokwi-micro-sd/sd-esp32/)
 - wokwi-slide-potentiometer

wokwi-lcd1602/lcd-uno/diagram.json

@@ -0,0 +1,30 @@
+{
+  "version": 1,
+  "author": "Uri Shaked",
+  "editor": "wokwi",
+  "parts": [
+    { "id": "uno", "type": "wokwi-arduino-uno", "top": 200, "left": 20 },
+    { "id": "lcd", "type": "wokwi-lcd1602", "top": 8, "left": 20 },
+    {
+      "id": "r1",
+      "type": "wokwi-resistor",
+      "top": 140,
+      "left": 220,
+      "attrs": { "value": "220" }
+    }
+  ],
+  "connections": [
+    ["uno:GND.1", "lcd:VSS", "black", ["v-51", "*", "h0", "v18"]],
+    ["uno:GND.1", "lcd:K", "black", ["v-51", "*", "h0", "v18"]],
+    ["uno:GND.1", "lcd:RW", "black", ["v-51", "*", "h0", "v18"]],
+    ["uno:5V", "lcd:VDD", "red", ["v16", "h-16"]],
+    ["uno:5V", "r1:2", "red", ["v16", "h-118", "v-244", "h50"]],
+    ["r1:1", "lcd:A", "pink", []],
+    ["uno:12", "lcd:RS", "blue", ["v-16", "*", "h0", "v20"]],
+    ["uno:11", "lcd:E", "purple", ["v-20", "*", "h0", "v20"]],
+    ["uno:10", "lcd:D4", "green", ["v-24", "*", "h0", "v20"]],
+    ["uno:9", "lcd:D5", "brown", ["v-28", "*", "h0", "v20"]],
+    ["uno:8", "lcd:D6", "gold", ["v-32", "*", "h0", "v20"]],
+    ["uno:7", "lcd:D7", "gray", ["v-36", "*", "h0", "v20"]]
+  ]
+}

wokwi-lcd1602/lcd-uno/lcd1602.test.yaml

@@ -0,0 +1,10 @@
+name: 'Arduino Uno ILI9341 Test'
+version: 1
+author: 'Test Author'
+
+steps:
+  - delay: 100ms
+  - wait-serial: 'Display initialized'
+  - take-screenshot:
+      part-id: 'lcd'
+      compare-with: 'screenshots/lcd1602.png'

wokwi-lcd1602/lcd-uno/platformio.ini

@@ -0,0 +1,6 @@
+[env:uno]
+platform = atmelavr
+board = uno
+framework = arduino
+lib_deps =
+    LiquidCrystal

wokwi-lcd1602/lcd-uno/screenshots/lcd1602.png

@@ -0,0 +1,13 @@
+#include <LiquidCrystal.h>
+
+LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
+
+void setup() {
+  Serial.begin(115200);
+  lcd.begin(16, 2);
+  lcd.print("Hello Wokwi!");
+  Serial.println("Display initialized");
+}
+
+void loop() {
+}

wokwi-lcd1602/lcd-uno/src/main.cpp

@@ -0,0 +1,4 @@
+[wokwi]
+version = 1
+firmware = '.pio/build/uno/firmware.elf'
+elf = '.pio/build/uno/firmware.elf'