Taste The Code

DIY Multi-Zone Drip Irrigation with Tasmota and an Isolated Relay Board

Upgrading my DIY irrigation controller to water three garden zones independently using Tasmota, a NodeMCU, and a washing machine valve.

Jun 12, 2026 — 7 mins read

Building a Smart Pellet Stove Monitor with HC-SR04, ESP8266 and Tasmota

Building a Tasmota-powered pellet stove level sensor using an HC-SR04 ultrasonic sensor, NodeMCU ESP8266, and 3D printed magnetic enclosures.

May 31, 2026 — 6 mins read

Using OpenPLC to Run Industrial Control Logic on an Arduino Uno

Turning an Arduino Uno into a real industrial PLC using the free OpenPLC editor and ladder logic programming.

May 22, 2026 — 5 mins read

Disposable Vape Teardown: Free 850mAh Battery, USB-C Charger and a Tiny Display

Salvaging an 850mAh lithium cell and a working USB-C charging circuit from a disposable vape and examining what is on its PCB.

Apr 25, 2026 — 5 mins read

18650 Battery Tester Review: Measuring Capacity and Internal Resistance

Testing salvaged 18650 cells from old laptop batteries using a 4-channel tester to measure capacity and internal resistance on each cell independently.

Mar 28, 2026 — 5 mins read

Diagnosing and Repairing a SANKEI TCR95 Studio Mixer from the 80s

I opened up my mom's vintage boombox to bring it back from the dead. A bad switch contact and a possible short were keeping it from working at its full potential again.

Mar 20, 2026 — 5 mins read

Full Electrical Isolation for Your ESP32 Power Switch Using an Optocoupler

Using an optocoupler instead of a transistor in a custom PCB power switch gives full electrical isolation and removes noise from MPPT solar charge controllers.

Mar 13, 2026 — 5 mins read

Inside a Plasma Ball: Testing, Replacing, and Learning from Failure

I attempt to repair a USB-powered plasma ball by diagnosing a blown transistor, replacing it, and exploring why the lightning effect stopped working.

Feb 21, 2026 — 6 mins read

Building a Simple Indoor Asset Tracking System With RYUW122_DK

I set up an ultra-wideband asset tracking system using Reyax RYUW122_DK kit to precisely track an RC car's position in real-time.

Jan 30, 2026 — 9 mins read

Touch Control Made Easy: A Beginner's Guide to TTP223 Sensors and ESP32 Touch Pins

Learn how to add touch control to your DIY electronics projects using the affordable TTP223 sensor module and the ESP32's built-in touch pins.

Jan 24, 2026 — 8 mins read

Taste The Code

DIY Multi-Zone Drip Irrigation with Tasmota and an Isolated Relay Board

Upgrading my DIY irrigation controller to water three garden zones independently using Tasmota, a NodeMCU, and a washing machine valve.

Building a Smart Pellet Stove Monitor with HC-SR04, ESP8266 and Tasmota

Building a Tasmota-powered pellet stove level sensor using an HC-SR04 ultrasonic sensor, NodeMCU ESP8266, and 3D printed magnetic enclosures.

Using OpenPLC to Run Industrial Control Logic on an Arduino Uno

Turning an Arduino Uno into a real industrial PLC using the free OpenPLC editor and ladder logic programming.

Disposable Vape Teardown: Free 850mAh Battery, USB-C Charger and a Tiny Display

Salvaging an 850mAh lithium cell and a working USB-C charging circuit from a disposable vape and examining what is on its PCB.

18650 Battery Tester Review: Measuring Capacity and Internal Resistance

Testing salvaged 18650 cells from old laptop batteries using a 4-channel tester to measure capacity and internal resistance on each cell independently.

Diagnosing and Repairing a SANKEI TCR95 Studio Mixer from the 80s

I opened up my mom's vintage boombox to bring it back from the dead. A bad switch contact and a possible short were keeping it from working at its full potential again.

Full Electrical Isolation for Your ESP32 Power Switch Using an Optocoupler

Using an optocoupler instead of a transistor in a custom PCB power switch gives full electrical isolation and removes noise from MPPT solar charge controllers.

Inside a Plasma Ball: Testing, Replacing, and Learning from Failure

I attempt to repair a USB-powered plasma ball by diagnosing a blown transistor, replacing it, and exploring why the lightning effect stopped working.

Building a Simple Indoor Asset Tracking System With RYUW122_DK

I set up an ultra-wideband asset tracking system using Reyax RYUW122_DK kit to precisely track an RC car's position in real-time.

Touch Control Made Easy: A Beginner's Guide to TTP223 Sensors and ESP32 Touch Pins

Learn how to add touch control to your DIY electronics projects using the affordable TTP223 sensor module and the ESP32's built-in touch pins.

Topics

Search

Tags

DIY Multi-Zone Drip Irrigation with Tasmota and an Isolated Relay Board

Upgrading my DIY irrigation controller to water three garden zones independently using Tasmota, a NodeMCU, and a washing machine valve.

Building a Smart Pellet Stove Monitor with HC-SR04, ESP8266 and Tasmota

Building a Tasmota-powered pellet stove level sensor using an HC-SR04 ultrasonic sensor, NodeMCU ESP8266, and 3D printed magnetic enclosures.

Using OpenPLC to Run Industrial Control Logic on an Arduino Uno

Turning an Arduino Uno into a real industrial PLC using the free OpenPLC editor and ladder logic programming.

Disposable Vape Teardown: Free 850mAh Battery, USB-C Charger and a Tiny Display

Salvaging an 850mAh lithium cell and a working USB-C charging circuit from a disposable vape and examining what is on its PCB.

18650 Battery Tester Review: Measuring Capacity and Internal Resistance

Testing salvaged 18650 cells from old laptop batteries using a 4-channel tester to measure capacity and internal resistance on each cell independently.

Diagnosing and Repairing a SANKEI TCR95 Studio Mixer from the 80s

I opened up my mom's vintage boombox to bring it back from the dead. A bad switch contact and a possible short were keeping it from working at its full potential again.

Full Electrical Isolation for Your ESP32 Power Switch Using an Optocoupler

Using an optocoupler instead of a transistor in a custom PCB power switch gives full electrical isolation and removes noise from MPPT solar charge controllers.

Inside a Plasma Ball: Testing, Replacing, and Learning from Failure

I attempt to repair a USB-powered plasma ball by diagnosing a blown transistor, replacing it, and exploring why the lightning effect stopped working.

Building a Simple Indoor Asset Tracking System With RYUW122_DK

I set up an ultra-wideband asset tracking system using Reyax RYUW122_DK kit to precisely track an RC car's position in real-time.

Touch Control Made Easy: A Beginner's Guide to TTP223 Sensors and ESP32 Touch Pins

Learn how to add touch control to your DIY electronics projects using the affordable TTP223 sensor module and the ESP32's built-in touch pins.

Topics

Search

Tags

DIY 3-Zone Smart Irrigation with Tasmota and a Washing Machine Valve

HC-SR04 Ultrasonic Sensor with Tasmota on NodeMCU

Turn Your Arduino into an Industrial PLC with OpenPLC

I Reviewed the Longer B1 40W Laser by Building a Power Supply