Create the mathematical inverse of an analog voltage by converting it to frequency and measuring the period. A popular series of inexpensive distance sensors integrates an infrared emitting diode, a linear charge-coupled-device array, and a ...
There are many approaches to the problem of activating a light when it becomes dark, and a recent Design Idea covers this topic (Reference 1). Some approaches require a dc power supply and an electromechanical relay, but a better approach involves ...
REC Johnson, B Lora Narayana, and Devender Sundi, Center for Cellular and Molecular Biology, Hyderabad, India A temperature sensor and a hot transistor hold biological samples at a preset temperature It is common to use transistors for driving ...
Zoltan Gingl Two configurable analog ports allow you to connect many sensor types using two three-input connectors, each of which has a ground pin (Figure 4). One ground pin provides 3.3V power, and the other outputs the buffered reference voltage ...
A precision analog acquisition system fits in your pocket. The circuit in this Design Idea combines a mixed-signal microcontroller, a USB UART (universal asynchronous receiver/transmitter), and a novel adaptable analog sensor-input circuit. It ...
You can make a wireless temps system with two ICs You can use a local temperature sensor and an ASK (amplitude-shift-keying) transmitter/receiver pair to design a simple wireless temperature-monitoring system with data-logging capabilities. A ...
This project is about building a PC-based temperature and relative humidity logger using the chipKIT Uno32 board and the DHT11 sensor. The project setup requires no additional wires (other than the USB cable) and components; the DHT11 sensor is ...
Part 1 - Schematic Firmware The entire firmware relies on logical decisions at every step. I wrote the code in a way that the complete code is divided into understandable small functional blocks or functions. Each of these functions is doing ...
Controlling temperature has been a prime objective in various applications including refrigerators, air conditioners, air coolers, heaters, industrial temperature conditioning and so on. Temperature controllers vary in their complexities and ...
Build a lab-grade data logger with PIC microcontrolller and a 20-bit delta-sigma converter. A new design of a lab-grade data logger has been developed using a PIC microcontroller and a 20-bit delta-sigma converter. The data logger provides ...