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) Read more…
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 Read more…
———————————- UPDATE ————————————– For a ADC Input Frontend with Auto-range capabilities in the 0-40V Input range take a look also at the new ADC Input related article ——————————— UPADTE —————————————- After testing the ESP8266 Internal ADC I think it’s time to see also a higher resolution ADC at work. For Read more…
Today subject might look a trivial one but is not. At all. I will try to keep it as easy to understand as possible without too much “behind the scene” theory. Contact bounce is a common problem with mechanical and electromecanical switches, relays, solenoids, etc. Switch contacts are Read more…
One of the desired and also needed things in many projects is the availability of a local display to be able to directly see messages, values, results, etc. What we will need to be able to easy interface it with ESP8266 module is a 3V logic level compatible one and Read more…
——————————— NEW UPADTE —————————————- Added also a new example for a 0-5V input range with Voltage divider and LSB calculation, “the easy way”: ESP8266 internal ADC 2 – the easy way example ———————————- UPDATE ————————————– For a ADC Input Frontend with Auto-range capabilities in the 0-40V Input range take a look Read more…
It’s time for TIME!I was delaying this article about RTC’s despite de fact that was higly requested with the hope that the ordered DS3231 modules will arrive in time. Didn’t happen, so, until they will hit my MailBox I am presenting you an alternate solution, an RTC chip used before Read more…
Just a quick one about new goodies found in the MailBox : External protective envelope Envelope in Bulgarian language:) Have you ever heard about Bulgaria? Is a country in southeastern Europe, member of the European Union, NATO, and the Council of Europe. And why are we interested about? It’s a Read more…
At least from the zillions of request for a DAC Driver implementation example that I received in the latest weeks, this is the long awaited topic: ESP8266 Modules and Voltage Output Digital-to-Analog Converter control! For our project we will use Microchip MCP4726, a Voltage Output Digital-to-Analog Converter (DAC) Read more…
As it was requested from you, my readers, in Part 3 of our CBDB saga, we will start building a simple, high precision, Temperature Data logger based on the MCP9808 chip, a ±0.5°C Maximum Accuracy Digital Temperature Sensor. As far as I know this is the first time NodeMCU float Read more…