I think everybody knows already the popular SSD1306 0.96″ OLED Display available all over the place for a very good price: SSD1306 0.96″ I2C OLED Display My first option for a Alphanumeric Display still remain the ST7032i LCD one, but as looking also for a Graphical Display option found this SSD1306 OLED as a easy to use one with the CBDB
What we will need: CBDB Board USB adapter (take a look on Part 1 for details how to connect them together) DS3231 Module – you can buy them at a very good price HERE, 1.62USD/pcs, a very good deal!! For programming and uploading the driver and the software we will continue to use the LuaUploader as before. If you remember my article
How we will do it: Connect to Google server, fetch the page header that contain the Timestamp and do some string manipulation to obtain the Date & Time information in the format that we need to be able to update our Real Time Clock: getTime = function() conn=net.createConnection(net.TCP, 0) conn:on(“connection”,function(conn, payload) conn:send(“HEAD
As you remember from our previous article about DS3231 RTC Module, we have identified onboard an EEPROM chip, a 32k AT24C32 one. It is independent from the RTC circuit and conected on the I2C bus, perfect companion for a Data Logger System 🙂 AT24C32 EEPROM The AT24C32 provides 32,768 bits of serial electrically erasable and
Do you remember the widely used DS3231 RTC Module ?As you might rememeber we have identified onboard an EEPROM chip, a 32k AT24C32 one and have written some driver examples for LUA I was looking a few days ago for a I2C EEPROM to do some tests with ESPBasic and the results…can be seen below 🙂 1. MAIN
I was asked if MCP9008 Temperature sensor can be replaced with the less precise but widely available LM75 one. The answer is YES, it can be done without any problems, actually they can share same slot on CBDB Dev Board without any hardware changes, just choose your desired I2C address with the A0, A1, A2 pins.
Using a 433Mhz radio link the ESP8266 CBDB Dev Board module equipped with a DHT22 temperature/humidity sensor is uploading data directly to the Konig 433 mhz wireless station with hygro-thermometer [KN-WS400N] : And the story behind: As been working to a ESP DHT22 sensors array for a Environment data logging system I was thinking that
The story behind: Many people are complaining about I2C communications problems, mostly related with the NodeMCU LUA. I found out that many of the related problems are generated from a easy to fall in trap, generated by the way how code is executed in case of a step-by-step debug run or using a interpreter console,
A quick example on how to change your Web interface GUI objects properties without using a separate CSS file: Reading Humidity and Temperature from a DHT22 Sesor connected to the GPIO5 and also retrieving Date and Time from NTP Server: PinDHT = 5 DHT.SETUP(22, PinDHT) cls timer 1000, [branch] ‘ ## Time for auto refresh
!! UPDATE !! UPDATE !! Available on Tindie Store here PCA9685 General Description If you are looking for a very simple to use 16 Channel LED controller or just for a nice 16 Channel, high resolution PWM driver then this one is for you!The PCA9685 is an I²C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber
