Tech Note 159 - Arduino using an fmap() function rather thn map()

Tech Note 158 - Sink and Source Currents

Tech Note 157 - Testing for a Wi-Fi connection, a new approach now available.

Tech Note 156 - Calculate the nth-Root of a number

Tech Note 155 - An example of a programming mistake

Tech Note 154 - ESP File Server using the Asynchronous Webserver

Tech Note 153 - ESP32 METAR (METeorological Aerodrome Reports) Decoder

Tech Note 152 - Use the Adafruit GFX Library to draw Lines of Any Thickness and Angle

Tech Note 151 - ESP32 ADC Accuracy Improvement using the ADC reference voltage to correct readings.

Tech Note 150 - ESP32 Low Sleep-Power Boards (Sleep Out!)

Tech Note 149 - ESP32 4-Channel Relay / GPIO Controller with Web UI

Tech Note 148 - ESP Smart Thermostat/Timer (ESP32 or ESP8266)

Tech Note 147 - ESP32 / ESP8266 Wi-Fi RF Power Output Adjustment

Tech Note 146 - ESP32 LoRa Transponder example

Tech Note 145 - ESP32 Advanced OWM Weather Server

Tech Note 143 - ESP32 – Voltage Reading (pre-calculated voltage divider) Examples

Tech Note 142 – Calibrate a BME280/680 Pressure Sensor or Barometer

Tech Note 141 - ESP32/8266 - BME280 Sleep Mode and Address Change

Tech Note 140 - Arduino/ESP32/8266 - Which Sketch/Programme is Loaded?

Tech Note 139 - Programming the ESP32/8266 using the C++ 'auto' keyword

Tech Note 138 - ESP32 and understanding 'Endianness' of data

Tech Note 137 - ESP32 a further insight into using the serial ports

Tech Note 136 - ESP32 Using its 8K of RTC RAM to retain data variables during deep sleep.

Tech Note 135 - ESP32 Wake-up from sleep using a push-button or Pulse

Tech Note 134 - ESP32 Easy power reduction method for battery powered projects

Channel Update

Tech Note 133 - ESP (8266 or 32) OWM Weather Webserver

Tech Note 132 - ESP32 Micro e-Paper (1.54") Weather Display

Tech Note 131 - ESP32/8266 Reducing Battery Load Hints & Tips

Tech Note 130 - Solar Power for Projects (Arduino/ESP8266/ESP32)

Tech Note 129 - ESP32/8266/Arduino Improved Li-ion/LiPo Battery Monitoring

Tech Note 128 - ESP32 4.2" e-paper Weather Display with Weather Girl icons

Tech Note 127 - ESP32/8266 Hints and Tips for Reliable Interrupt Operation

Tech Note 126 - ESP32 miniature weather station with wind direction add-on

Tech Note 125 - ESP8266 Combined timer and pin interrupts to measure wind speed sensors

Tech Note 124 - ESP8266 Interrupts for Code Efficiency and Speed

Tech Note 123 - ESP32 or ESP8266 NTP synchronised Real Time Clock

Tech Note 122 - ESP8266/ESP32 NTP Time – The Simple Way

Tech Note 121 - ESP32 Webserver and UDP to control remote Devices

Tech Note 118 - Mandatory Library Contents and Conventions (Part 2 of 4)

Tech Note 120 - Library file location directors (Part 4 of 4)

Tech Note 119 - Scope Resolution Operators used in Libraries (Part 3 of 4)

Tech Note 117 - Creating an Arduino IDE Library (Part 1 of 4)

Tech Note 116 - Beginners guide to creating your own class and object

Tech Note 115 - Using the ESP32 ADC for wide range DC voltage measurements

Tech Note 114 - The ESP-EYE a new developmemnt board from Espressif

Tech Note 113 - 'Pushing' data to a client's webpage from an ESP Webserver using AJAX

Tech Note 112 - ESP32/ESP8266 Code Debugging Techniques

Tech Note 111 - ESP32 LoRa Modules - Sending and Receiving Data

Tech Note 110 - ESP32's using low cost RF links

Tech Note 109 - ESP32/8266/Ardiuno Project Power Source

Tech Note 108 - ESP32 2D Sun Tracker using servo controlled gimbal

Tech Note 107 - Lolin D32 Pro V2 (compared to V1)

Tech Note 106 - Wemos/Lolin 1.4" TFT Shield for D1 Mini/MH-T Live

Tech Note 105 - ESP32 based TTGO T-Beam LoRa + GPS

Tech Note 104 - Adding Gesture Control to your Arduino / ESP projects

Tech Note 103 - CCS811 Air Quality Monitor for Ardunio, ESP8266 or ESP32

Tech Note 102 - ESP(32 or 8266) Produce and Display QRcodes

Tech Note 101 - ESP32 4.2” e-Paper Weather Display 'Goes Smaller Again!

Tech Note 100 - ESP32 7.5” e-Paper Weather Display - 'Goes Large!'