Archive for January 2013

SHTx Temperature and Humidity Sensor (Part 3)

Part 1, 2, 3 PlainSHT1x contains a set of additional functions which perform advanced tasks such as checking power supply voltage: uint8_t PlainSHT1x::Battery() { uint8_t regContent = ReadRegister(); return ((regContent >> 6) & 0x01); }; … changing the resolution of measurements: void PlainSHT1x::Resolution(uint8_t state) { _resolution = state; uint8_t regContent = ReadRegister(); if (state) { regContent |= […]

Serial Comm Ports for ever and ever… (Part 8)

Part 1, 2, 3, 4, 5, 6, 7, 8 This post couldbe nammed at “The doc of the day”, or “The ultimate RS232 vademecum”, or “The RS323 digest”, etc. National Instrument did it in on one, clean and refined page: the  “Serial Quick Reference Guide”

SHTx Temperature and Humidity Sensor (Part 2)

  Part 1, 2, 3 The trickiest part of the sensor is its communication protocol. SENSIRION makes it clear from the beginning in the SHT1x data sheet: “The serial interface of the SHTxx is optimized for sensor readout and power consumption and is not compatible with I2C interfaces”. Data is read or written from/to the sensor thanks to 9 […]

Here comes the Due

Here it is after a long and patient wait! Short long story: I recorded my name on various supplier’s web sites which were all running out of stock. In the middle of December I got the feedback that one of them had a couple of Due available, but as I was away from my desk […]

SHTx Temperature and Humidity Sensor (Part 1)

Part 1, 2, 3 I introduced the temperature and humidity sensors from SENSRION a couple a months ago [link to this post], and I recently decided to use one of them for building a sensor which would aggregate multiple physical measurements. For the sake of saving time, I ordered the PARALAX module which is handy and has a […]

Happy New Year

I wish you a happy new year! “Be the change you wish to see in the world.”  Mahatma Gandhi Get the latest Flash Player to see this player. [Javascript required to view Flash movie, please turn it on and refresh this page] Didier