If you worked for a real application with IQRF modules with DPA, you’ve probably reached to the conclusion that for communication with PC is very convenient to use UART. Me too. I like UART for his simple handling and easy accessibility, unlike SPI (just PC has no native SPI port 🙂 ). This post describes simple classes for DPA ↔ HDLC conversion written in C#.
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.
I’ve used the AD converter several times in my articles, but you could be in situation, when you need more ADCs, or you have not enough IO ports. In these situations an external AD converter is suitable choice. I tested MCP3021, cheap and simple ADC worked on I2C bus. More inside… Continue reading
Some of my posts were dedicated to Remote controlled relay board or . But in many situations, this board was too big. I made another board for this cases and, of course, I made new application for DCTR module. Now, straight, for DPA, but if you want, you can make a simple P2P application from published source code.
Sometimes you need check, which part of radio spectrum (channel) is free for your application. The rf_scanner from advanced examples could be solution for you. Please note, that following application can not substitute professional RF scanner, but could be useful, if you have not any better measurement device.
Today, we are going to tell something about wireless traffic lights for BMX races. Here it is necessary to control a pair of riders, so they does not enter both on the track simultaneously to avoid collision. This traffic lights alternately allows to enter one of drivers to track, then 10 seconds is red color on both devices (entrances) and then driver from the second entrance is allowed to enter the track.