spuder · August 28, 2022 15:39 · Aug 28, 2022 · Aug 28, 2022 · Aug 28, 2022
diff --git a/main.cpp b/main.cpp
@@ -21,7 +21,7 @@ void get_input() {
     if (DigiUSB.available()) {
       // something to read
       lastRead = DigiUSB.read();
-      # If you type 1, it will turnon the LED for 100 ms
+      //If you type 1, it will turnon the LED for 100 ms
       if (lastRead == '1') {
         digitalWrite(1,HIGH);
         delay(100);

diff --git a/main.cpp b/main.cpp
@@ -21,7 +21,7 @@ void get_input() {
     if (DigiUSB.available()) {
       // something to read
       lastRead = DigiUSB.read();
-      # If you type 
+      # If you type 1, it will turnon the LED for 100 ms
       if (lastRead == '1') {
         digitalWrite(1,HIGH);
         delay(100);

diff --git a/README.md b/README.md
@@ -0,0 +1,21 @@
+Digispark doesn't allow using the normal `Serial.println()` that an arduino uses becuase it doesn't show up as a com port. 
+
+Instead you need to use `hidapitester` or https://github.com/Bluebie/digiusb.rb ruby app to read from USB data. 
+
+Digispark has `VID/PID` of `16C0/05DF`
+
+## bluebie/digiusb
+
+Start the digterm ruby app and enter `1` in the terminal. 
+When 1 is pressed, the blue LED (pin 1) should turn on for 1/10 of a second
+```bash
+gh repo clone Bluebie/digiusb.rb
+cd digiusb
+gem install colored
+gem intall libusb
+./bin/digiterm
+>hello world
+>1 
+```
+
+
diff --git a/main.cpp b/main.cpp
@@ -0,0 +1,47 @@
+// To upload this sketch to digispark, you must either use platform.io or a really old version of arduino on a 32 bit mac (64 bit wont work)
+// You more than likely can't plug the digispark into a usb 3.0 port. Use a usb 2.0 port or a usb extenstion cable
+// https://www.youtube.com/watch?v=hVQubqgdoZg
+// To actually upload code with platform.io, click upload, then unplug/replugin in the device within 5 seconds. 
+
+#include <Arduino.h>
+#include <DigiUSB.h>
+
+void setup() {
+    pinMode(1, OUTPUT);
+    digitalWrite(1,HIGH);
+    delay(500);
+    digitalWrite(1,LOW);
+    DigiUSB.begin();
+}
+
+void get_input() {
+  int lastRead;
+  // when there are no characters to read, or the character isn't a newline
+  while (true) { // loop forever
+    if (DigiUSB.available()) {
+      // something to read
+      lastRead = DigiUSB.read();
+      # If you type 
+      if (lastRead == '1') {
+        digitalWrite(1,HIGH);
+        delay(100);
+        digitalWrite(1,LOW);
+      }
+      DigiUSB.write(lastRead);
+
+      if (lastRead == '\n') {
+        break; // when we get a newline, break out of loop
+      }
+    }
+
+    // refresh the usb port for 10 milliseconds
+    DigiUSB.delay(10);
+  }
+}
+
+void loop() {
+  // print output
+  DigiUSB.println("Waiting for input...");
+  // get input
+  get_input();
+}
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