Dear all,
I want to use a old ATX as power supply for the RPi.
My old ATX has a 5v (30A) output. Is this output safe for my the RPi or is there the risk to damage the hardware?
I think that I solved my problem (I performed some tests) by substituing the air dryer with a saturated salt solution. Right now the raspberry pi is inside a sealed box with a 400-mL potassium carbonate salt solution. As explained by Greenspan (1976)*, potassium carbonate should be able to maintaine...
This is the dryer. http://www.amazon.co.uk/dp/B000BP81DW/ref=asc_df_B000BP81DW29538786/?tag=googshopit-21&creative=23390&creativeASIN=B000BP81DW&linkCode=df0&hvdev=c&hvnetw=g&hvqmt= The distance between the dryer and the sensor is about 1 m (I need this distance because of a further experiment in a ...
I monitored the temperature too and it is stable. No changes in temperature were measured by the sensor. I noted tha spikes were significantly lower in case of the door of the room was partally opened. Thus, I suppose that no EM emission was responsible for what I measured. It is a really strange be...
Dear all, I am playing with some sensors and raspberry Pi. I bought the DHT22 sensor with the aim to monitor the room temperature and the relative humidity of a closed space. To deeply test the sensor, I turned on an air dryer into a room. The results were very strange: every time the air dryer star...
Hi all, I did an additional test. I acquired images every 30 sec for 10 min by turning the light on 2 seconds before the image acquisition. Thus, it is impossible that the lights were heated. Here the plot: luminance_3.png The plot is pretty clear: the camera goes "dark". I will perform the tests yo...
I have a constant-current driver and the LEDs require 12V. The ATX DC provides a stable current over time when lights are on (I measured it). I do not use ballast resistors. The light source are similar to those shown in the following image http://www.ledworld.it/public/zoom_24822304_LS3116_04.jpg T...
Hi, thank you for you answer. Of course, I already turn off the exposure time. At a early stage of my script development, I noted that shutter speed and exposure time tended to different values (exposure time gradually decreased over time). After both software and firmware updates exposure time seem...
Dear all, I am working on a little project with the aim to build a colorimeter by using raspberry pi + python + opencv. The colorimeter will be used to acquire images every 30 seconds for detecting changes in color of a food matrix. Unfortunately, I have a big issue with the raspberry pi camera due ...