A month ago, we tested simple temperature logger with EEPROM storage. Today, we are going to do some improvements. We will use external EEPROM – EEEPROM for data storage (128×16 positions) and EEPROM as settings storage. In addition we will make a sampling period adjustable by DPA command.
Today, we are going to start first part of new serie of articles about wireless data loggers. Today, we will do simple temperature logger for short periods. This temperature logger uses TMP112 device assembled on DCTR module and stores value into MCU EEPROM.
Today, I am going to continue with DCTRs usage. I my older article: Addressable one-wire RF thermometer, I used DS18B20 assembled on DDC-SE-01. This example worked as addressable Point to point application. Now, we know, how to make IQMESH and we are able to use DPA. So let’s do it… Continue reading
This article describes temperature and humidity measurement with DHT11 sensor connected to TR module. Circuit diagram is very simple. You need only power supply for sensor and one wire for data line. This line has to be “pull-uped” – sensor has open colector output.