Part 1 - Theory and Schematic Operation of the board The operation of the board is very simple. After powering the board from a 3-5.5 V supply, the Enable (EN) pin must be pulled high to activate the IR sensor. Next, place the tip of your ...
24-12-2012
When I first built the Heart rate measurement through fingertip project, the infrared LED and photodiode used for finger photoplethysmography were actually from salvaged parts, and therefore, I could not provide specifications for them in the ...
30-11-2012
The thermocouple is a kind of the temperature sensors. It is inexpensive and the measureing range is very wide compared to thermisters or temperature sensor ICs. However because the output voltage is small and relativistic, the thermocouple ...
26-11-2012
Part 1 - Hardware and Schematic Part 2 - Robots Filippo, Bipe and Spider Let us see now the analysis of the firmware describing those functions that are common to all the robots such as the procedure that reads the distance from obstacles by means ...
19-11-2012
Filippo robot Filippo is a biped robot whose movements are assigned to only two servos, but with this robot you can experiment with robotics without spending large sums. It is able to walk and turn around, then you can direct it in any direction, ...
18-11-2012
Part 1 - Theory In the first part of this discussion, the features of ACS712 device were briefly discussed. Now we will use that theory to implement the ACS712 sensor to make a simple DC current meter. The analog output voltage from the sensor is ...
10-11-2012
Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, ...
10-11-2012
The idea behind this post is to bring together some robot designs and trasform them in a new device with new hardware and standard software (arduino of course) and so easier to use. These robots have three things in common: a mechanical structure, ...
31-10-2012
Temperature-indicator and temperature-based products have generated wide interest. There are numerous applications for such devices with many possible solutions, each with its own advantages and disadvantages. This idea discusses a sensor interface ...
28-10-2012
One tool that I've been missing at my lab at home is function generator. They tend to be a bit expensive, so I haven't bought one. I thought this might be a good opportunity to try and make one myself. I found a pretty common DDS (direct digital ...
15-10-2012
