// // hello.t412.4.blink.ino // // tiny412 blink hello-world, 4-pin serial header // // Neil Gershenfeld 7/19/25 // // This work may be reproduced, modified, distributed, // performed, and displayed for any purpose, but must // acknowledge this project. Copyright is retained and // must be preserved. The work is provided as is; no // warranty is provided, and users accept all liability. // #define LED_pin PIN_PA6 void setup() { pinMode(LED_pin,OUTPUT); } void loop() { digitalWrite(LED_pin,LOW); delay(500); digitalWrite(LED_pin,HIGH); delay(500); }