B4XGoods-B4X好物整理，每周六更新

B4RLibraryComms & Network

ESP32 Ping

ESP32 Ping

@thetahsk · 2021-10-09

B4RLibraryStrings

rURL - UrlEncode and UrlDecode

Allows you to UrlEncode and UrlDecode strings in order to use them in URLs

@hatzisn · 2021-09-25

B4RClassThread [MODULE]

TascScheduler module [Module]

A basic task scheduler to manage multi-threading in B4R environment

@candide · 2021-08-17

B4RLibraryB4R sensor

rHCSR04 - Ultrasonic Distance Sensor

rHCSR04 - Ultrasonic Distance Sensor

@rwblinn · 2021-07-28

B4RLibraryB4R [MODULE]

GlobalStore - Global objects storage [module]

As explained in the tutorial about memory management in B4R: https://www.b4x.com/android/forum/threads/65672/#content it is not trivial to assign the value of a local, non-numeric, variable to a global variable.The reason behind this limitation is that the memory is statically allocated during compilation. It is therefore only possible to set fixed-size values (such as numbers).The attached module uses B4RSerializator to convert the objects to bytes and then copies them to a global buffer.Using it is simple. You need to call Store to put an object and you need to get objects from the GlobalStore.Objects array.By default there are 5 slots that you can use. This can be changed by modifying the code.

@Erel · 2021-07-22

B4RLibraryB4R LED

rLEDController

rLEDController is an open source B4R B4XLib for controlling multiple LEDs.

@rwblinn · 2021-07-21

B4RSnippetB4R

ESP8266 yield[] function

ESP8266 yield() function

@hatzisn · 2021-07-14

B4RLibraryGPS/location/maps

rGPRMC

rGPRMC is an open source B4R B4XLib for parsing the GPS NMEA RMC sentence message

@rwblinn · 2021-07-05

B4RLibraryHome automation

rMiLYWSD03MMC - Xiaomi Mi Temperature & Humidity Monitor 2

rMiLYWSD03MMC - Xiaomi Mi Temperature & Humidity (& Battery) Monitor 2

@rwblinn · 2021-07-01

B4RSnippetTimer

Oscillator 1-1,000,000 Hz

Using 16b TIMER 1 and inline C to get oscillating output at PIN 9 (Arduino Uno). the frequency can be set to 1Hz up to 1MHz, the output is set by division of the 16MHz crystal. When the frequency is power of 2 the output is accurate, otherwise the error can be up to 0.04%.

@moty22 · 2021-06-21

B4RSnippetTimer

PWM with selection of frequency

Using inline C allows controlling TIMER 2 PWM output (analog output) to oscillate at selected frequencies of 61 Hz to 62,500 Hz.freq=1 to 7 select frequency, ana_out set the duty cycle and output at pin 11 (OSC2A) of Arduino Uno.

@moty22 · 2021-06-20

B4RTutorialOther