Taste The Code

Monitoring Temperature, Humidity and Air Quality with the BME680

Building a wireless environment monitor with a BME680 sensor and an ESP32 running Tasmota, sending temperature, humidity and air quality data over MQTT.

Aug 15, 2026 — 9 mins read

Repairing a Weather Station Without Replacing Parts

A brand new RS485 weather station arrived completely dead, and the fault turned out to be one solder joint that looked perfect but carried no current.

Jul 29, 2026 — 11 mins read

Flashing and Configuring ESP Claw on UNIHIKER K10 ESP32-S3 Board

I flash the DFRobot UNIHIKER K10 with ESP Claw firmware and let an AI agent write its own scripts to control its LEDs and screen.

Jul 20, 2026 — 6 mins read

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

Taste The Code

Monitoring Temperature, Humidity and Air Quality with the BME680

Building a wireless environment monitor with a BME680 sensor and an ESP32 running Tasmota, sending temperature, humidity and air quality data over MQTT.

Repairing a Weather Station Without Replacing Parts

A brand new RS485 weather station arrived completely dead, and the fault turned out to be one solder joint that looked perfect but carried no current.

Flashing and Configuring ESP Claw on UNIHIKER K10 ESP32-S3 Board

I flash the DFRobot UNIHIKER K10 with ESP Claw firmware and let an AI agent write its own scripts to control its LEDs and screen.

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.

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Monitoring Temperature, Humidity and Air Quality with the BME680

Building a wireless environment monitor with a BME680 sensor and an ESP32 running Tasmota, sending temperature, humidity and air quality data over MQTT.

Repairing a Weather Station Without Replacing Parts

A brand new RS485 weather station arrived completely dead, and the fault turned out to be one solder joint that looked perfect but carried no current.

Flashing and Configuring ESP Claw on UNIHIKER K10 ESP32-S3 Board

I flash the DFRobot UNIHIKER K10 with ESP Claw firmware and let an AI agent write its own scripts to control its LEDs and screen.

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.

Topics

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Build an Air Quality Monitor with a BME680 and ESP32

One Weird Solder Joint Killed the Entire Device

This Board Programs Itself?! ESPClaw AI Agent on UNIHIKER K10 ESP32

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