![arduino - How do I hook up an LED across the tx pin on my Atmega328? - Electrical Engineering Stack Exchange arduino - How do I hook up an LED across the tx pin on my Atmega328? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/NG3Em.png)
arduino - How do I hook up an LED across the tx pin on my Atmega328? - Electrical Engineering Stack Exchange
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The tx led of arduino uno is always on and the board can't be programmed(programmer not responding) - Installation & Troubleshooting - Arduino Forum
![Arduino board not detecting and Tx an Rx is ON continous - Installation & Troubleshooting - Arduino Forum Arduino board not detecting and Tx an Rx is ON continous - Installation & Troubleshooting - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/3/8/6/3862490414605eb6eae27abae059d3289e6354ba.jpeg)