A montage of projects on various topics
Introduction Hardware Programming >>>>>>Main Program >>>>>>Communication With Sensor Via UART Conclusion Introduction I recently came across this interesting CO2 sensor that uses photoacoustic spectroscopy and is not too expensive. The evaluation board that I...
Introduction Hardware Software Results Introduction I have been focussing efforts on building and testing interesting and useful sensors with data sent to the cloud by either esp8266 or ESP32 devices (in one case I...
Introduction The Camera RASPIVID Command Resolution Automatic White Balance Auto Exposure and ISO Contrast and Brightness Profile, Intra Refresh Period, Quantization Parameter, and Bit rate Shutter Speed and Video Length Putting the h264 Video...
Introduction Photodiodes Transimpedance Amplifier Sensor Assemblies Method 36 Watt Rated Lamp Results 6 Watt Rated Lamp Results Photodiode Comparisons Internal Reflection – Source of High Reading Photodiodes How Is Responsivity Measured? Reflections Inside the...
Introduction Lamps and Lamp Assemblies Experimental Method AC Mains Power Meter Power Meter Pre-Testing Oscilloscope and Probes Experimental Results Photosensor Observation of UVC Output Power Meter Data for All Lamps 36 watt Bi-tube Assembly...
The derivation found in Ultraviolet Lamp Output Measurement: A Concise Derivation of the Keitz Equation by Michael Sasges, Jim Robinson, and Farnaz Daynouri Ozone: Science & Engineering, 34: 306–309 uses some symbols defined differently...
Introduction Keitz model Beggs model Modest model Comparison of models Conclusion References Introduction When one deploys a UVC germicidal lamp for the purpose of disinfection, there are two fundamental relationships that need to be...
Method What is sufficient dose? Low cost disinfection chamber Operation Safety UVC LED lamps Misleading CDC information Design Calculations and Adenovirus Inactivation Method Very short wavelength of UV light, labelled UVC, has long been...
Elsewhere at this site I have described the GATT Client MQTT Gateway project. There a BLE (Bluetooth Low Energy) server (peripheral device) communicates data to a BLE client (central device) that also acts as...
The ESP8266 SDK comes with a very useful set of examples in the directory IoT_Demo. With it I built and operated some useful devices, namely the DHT11 and DHT22 temperature and humidity sensor and...
