I had to help one of my students in a project involving flex sensors. After trying several tutorials I decided to make a custom version with which I'm quite satisfied.
Dec 10, 2020
My version of a DIY bend / flex sensor
I had to help one of my students in a project involving flex sensors. After trying several tutorials I decided to make a custom version with which I'm quite satisfied.
Mar 17, 2018
Crazy eyes: first complete prototype test
After a long time parked, I took this project again and put the things together to do a first test moving the servos with the tracking data.
The IR illumination system has a lot to improve, but so far the tracking is working fine.
Video recorded by Xavi Selvi
The IR illumination system has a lot to improve, but so far the tracking is working fine.
Video recorded by Xavi Selvi
Labels:
arduino,
arduvision,
computer vision,
embedded,
infrared,
tracking
Dec 19, 2017
Avoid arduino resets caused by servo current spike
Dealing with relatively high torque servo motors powered by the USB port or a power bank through the arduino board may cause a current spike that lowers the voltage and makes the arduino reset... keep reading for a solution for this problem.
Jul 11, 2017
Halogen floodlight SMT reflow
This project was waiting on a box fot two years, until I had to solder 100 PCBs. After some research on SMD/SMT reflow oven hacking, I was confident to build my own reflow device with an halogen floodlight.
Labels:
controller,
diy,
floodlight,
hacking,
halogen,
reflow,
SMD,
SMT
May 5, 2017
Valentia Case-Rap foldable 3D printer
In the summer of 2016, browsing in Thingiverse I came across the Case-Rap 1.0 foldable 3D printer by jlguils. I liked the design strategy of dividing the structure in parts that, when folded, transformed themselves into a portable case. And started to develop my own custom version: the Valentia Case-Rap foldable 3D printer.
Labels:
3D printer,
3d printing,
case-rap,
foldable,
rep-rap,
valentia
Apr 20, 2017
Mysterious z ribbing with PLA... solved!
I've been having consistent z ribbing on different custom printers since a year or so...
No matter what I've tried (z wobble isolator, z axis strabilizer, threaded rod diameter/pitch changed, etc.).
Yesterday my heated bed's MOSFET failed while printing yet another calibration cube and guess what... NO Z RIBBING!!!
No matter what I've tried (z wobble isolator, z axis strabilizer, threaded rod diameter/pitch changed, etc.).
Yesterday my heated bed's MOSFET failed while printing yet another calibration cube and guess what... NO Z RIBBING!!!
Labels:
3D,
3D printer,
3d printing,
heated bed,
Marlin,
pla,
temperature,
z ribbing
Jun 21, 2016
Arduvision (II): OV7670 + FIFO module and arduino Mega
After several people asking for instructions to use an Arduino Mega to interface the ov7670 sensor, I decided to publish a tutorial about it...
Labels:
2560,
al422,
arduino,
arduvision,
cmos,
computer vision,
fifo,
Mega,
module,
omnivision,
ov7670,
ov7725,
processing,
processing.org
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