Programming an Atmel AVR (AtTiny45 or AtTiny85 ) microcontroller can be achieved using a custom programmer or you can use an existing one. In my case, I have a Sparkfun Tiny AVR Programmer
AVR Programmer: AtTiny45, AtTiny85
ESP8266 D1 mini PRO extenal antenna
ESP8266 Wemos D1 mini PRO board has an external antenna connector, besides the internal antena. The external antenna is not enabled. To do this, you must move the zero value resistor R16. Notice the position were it should be the
Wemos D1 mini Pro
D1 mini Pro is a wifi board with 16MB flash, external antenna connector and built-in ceramic antenna based on ESP-8266EX Features: 11 digital input/output pins Interrupt/pwm/I2C/one-wire 1 analog input(3.2V max input) 16M bytes(128M bit) Flash External antenna connector Built-in ceramic
OneWire DS18B20 temperature sensor
In this article we will discover the temperature OneWire DS18B20 temperature sensor, available also in a waterproof version. The DS18B20 is a so called 1-wire digital temperature sensor. “1-wire” make this sensor really cool and you can connect multiple devices together, utilizing only
Move applications to PHP7
Prepare your apps to PHP7, which is soon to become the “current” version. One of the problems might be the usage of preg_replace() function with “/e” modifiers. You might get this error message: Deprecated function: preg_replace(): The /e modifier is
PHP remove multiple whitespaces
Replacing multiple spaces with a single space simple single line of php code: $output = preg_replace(‘/\s+/’, ‘ ‘, $input); This mean that spaces, tabs or line breaks (one or more) will be replaced by a single space. Replace multiple spaces
ESP8266: DHT22 temperature sensor
Temperature and humidity reading from RHT03 (also known as DHT22) using ESP8266 WeMos D1 mini board. As many other examples available on the internet, it was inevitably to post myself a temperature and humidity reading application. The values from sensors are
ESP8266 – WeMOS D1 mini – ch340
When you connect the WeMOS D1 mini board for the first time on your Windows computer through a USB cable, it might be the case to install a USB-to-SERIAL driver. The board has a USB-to-SERIAL converter (CH340 chip). The driver is
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WeMos D1mini ArduinoIDE
Programming your D1mini ESP8266 in ArduinoIDE: use Arduino IDE 1.6.5 check your aditional board URL from file->preferences http://arduino.esp8266.com/stable/package_esp8266com_index.json check D1 mini board The actual pins on the board: Pin Function ESP-8266 Pin TX TXD TXD RX RXD RXD A0 Analog