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Ok, this is going to be very short, as this is just testing the DHT-11 module, as I really wanted a DHT-22. The DHT-11 is slower and less accurate that the DHT-22, which I have but have not found all of my goodies as of yet. I found a DHT-tester program as an example in the DHT-sensor-library-master.zip file. It was very simple to use. I only had to wire the three leads (ground, +5 vdc, data) to an Arduino mega and plug in my USB cable. It worked the first time, right out of the box. As you can ...
Ok, I have settled on the MSP-432 with the Kentec display. Out of the box the feature set is quite impressive: 48MHz 32-bit ARM Cortex M4F with Floating Point Unit and DSP acceleration Power consumption: 95uA/MHz active, and 850nA RTC standby operation Analog: 24Ch 14-bit differential 1MSPS SAR ADC, Two Comparators Digital: Advanced Encryption Standard (AES256) Accelerator, CRC, DMA, HW MPY32 Memory: 256KB Flash, 64KB RAM Timers: 4x16-bit, and 2x32-bit Communication: Up to 4 I2C, 8 SPI, 4 ...
Lets say that my home has 2 bedrooms, 2.5 bathrooms, laundry, kitchen, Office, and a workroom(I like to tinker). So we are going to need six room controllers. So we will need several sensors in each of the rooms which in turn feed in the corresponding room controller. For starters, we will need to measure the temperature and humidity.  This can be handled by a DHT22 this is a serial device which simplifies integration. We need a way to talk to the user so we need some sort of display, and a ...
Ok, lets start what we mean by environmental control and what is it. Environmental control is what temperature, humidity, air quality.  Lets take theses one at a time so I don't loose you. Temperature:  This is the current temperature of you room or house. This can also be adjusted. Heating system can be Forced Air, Hot Water and Radiators, In Floor Radiant System (ether, electric or water). While air conditioning is normally forest air cooled by Freon, cold or chilled water systems ca ...
From the start, I have designed Smarthab with connectivity. Smarthab uses several forms of connectivity: Bluetooth, Zigbee,e WiFi, RFID, and Internet. And here is what they do: Zigbee - Interconnection of low-power devices in a mesh network such as my thermostat or air quality management system. Bluetooth - Interconnection of devices that work in a higher power band, such as keyboards, room fobs (controller). to be designed RFID - Passive devices, 20cm for fobs and badges, etc. WiFi - Connects ...