Use TX and RX as GPIO on your ESP8266

Ever wanted more GPIO on your ESP8266? This is one simple way to use your serial pins as GPIO. They can even be used for PWM and i2c!

Also check out Bornach's channel: https://www.youtube.com/channel/UC9yIAXcDmR2jjjAYopqwlmA

---

Code:

//GPIO 1 (TX) swap the pin to a GPIO. pinMode(1, FUNCTION_3); //GPIO 3 (RX) swap the pin to a GPIO. pinMode(3, FUNCTION_3);

---

Parts:

Wemos D1 Mini Clone*: http://s.click.aliexpress.com/e/uzFUnIe

1.3" OLED Display*: http://s.click.aliexpress.com/e/cDNvohJE

My D1 Mini Matrix Shield: https://www.tindie.com/products/brianlough/d1-mini-matrix-shield/

---

My Tindie Store:

I've started to sell stuff on Tindie, check it out!

https://www.tindie.com/stores/brianlough/

---

Other Platforms:

Twitter: @witnessmenow - https://twitter.com/witnessmenow Instagram - https://www.instagram.com/brian_lough/ Instructables: witnessmenow - https://www.instructables.com/member/witnessmenow/

---

Support the Channel:

Buying anything through the following links will help support the channel and not cost you anything extra.

My Amazon Shop is now open: https://www.amazon.co.uk/shop/brianlough

Amazon.co.uk: http://amzn.to/2g7mJIO Amazon.com : http://amzn.to/2ykDQ42

Aliexpress: http://s.click.aliexpress.com/e/wdhojba

LCSC (where I buy most of my parts for Tindie stuff): https://lcsc.com/?promote=ODM5ZTB5NlkwNUN3bkNCZUtGb0ZlSWFKTGJIaTl3WThNWldwU0R6QndkZ3prNWdPemlTcG5XSi94U1Zpc0g5Y3MwYjFOUTNIZjJLbGhwWllsZ3N5QnR2WkZRdXMvdGVFcVhJWlJOdnNBV1U0RDZuY1M4TFlqZWNQYUo4RkN6VVJ2c0J4MTcvU3NEdw==

---

My Tools & Kit*:

Ts-100 Soldering Iron

• UK : http://amzn.to/2nlOF23
• US : http://amzn.to/2jDcyxl

Logitech C920 HD 1080p Pro webcam

• UK: http://amzn.to/2pnxk9Z
• US: http://amzn.to/2BsLMiF

Blue Snowball USB Microphone

• UK: http://amzn.to/2C0x4TH
• US: http://amzn.to/2DEA85J

Self Adjusting Wire Strippers

• UK: http://amzn.to/2C0urkR
• US: http://amzn.to/2BXQAh1

*= Affiliate Links ... https://www.youtube.com/watch?v=uBvnvf35YJ8