Saturday, 19 March 2022

St Pats Parade 2022 CoderDojo Robot

Well the dress rehearsal for the Shannon St Patrick's Day Parade robot costume passed - just!

Well done to Love Shannon Community Council for driving the organising this year.
During the parade you can:
1) turn off mobile data
2) connect to WiFi hotspot "CoderDojo"
3) browse to 192.168.4.1 to see live crowd selfies!
My nose is an IKEA air quality sensor that changes from green to orange to red depending on the amount of particles in the air 🙂Things I didn't get round to doing:-
1) Computer style green technical overlay of images
2) Wiring up environmental sensors to RPi Zero W for live reporting by website
3) Connecting to a LoRaWAN sensor network
Next year!
Have a wonderful day, take lots of pictures and enjoy yourselves! 🙂


Above is the sandwich board holding the RPi Zero W camera and battery.



Above is the whole costume though you cannot see the boots :)


















Above shows the IKEA PM2.5 particular sensor glowing orange as the robot's nose. As I had just extinguished a candle underneath it making it go from green to orange to read after a minute.



Above the sensor is back to green :) As the air has now cleared of smoke.



And above is a test image from the web portal.


During the parade I got some nice photos..























Monday, 14 March 2022

LoRaWAN Compost Monitor

 Based on multiple ds18b20 sensors for monitoring compost heap (unknown status) was scouts PV monitor

RC Boat Project based on drone controller

 Never did much but I believe has 868MHz transceivers.

Weighing scales projects

I made one for my oil tank but kept increase weight as strain was too much and so was deforming sensors. 

I would also like to replace Sanitas SBF 70 app! https://github.com/oliexdev/openScale/issues/153

 

Friday, 11 March 2022

What Thermal Imaging Camera to Buy?


 


There are a few considerations here:

1) Sensor image resolution. That is, 80x60 pixel, 160 x120 pixels, etc.

2) Standalone operation with own display or tethered to an existing phone

3) Buy new, secondhand or make our own


I have built one from a FLIR Lepton 80x60 sensor controlled by a Raspberry Pi that sends to a mobile phone to display via a built in webserver. Cost around 200 euros.

A review of the 13 products  listed at:

https://www.digitalcameraworld.com/uk/buying-guides/best-thermal-imaging-camera

Gave me the following information:


No.    Name                                     Price            Resolution    Type                        Website

#1      FLIR One Gen 3                    £200            80x60            Android USB-C    Amazon.co.uk

#2      Seek Thermal CompactPro    £540            320x240        Android USB-C    Amazon.co.uk

#3      FLIR C-Series                        £474            128x96          Standalone            Amazon.co.uk

#4     Seek Thermal Reveal Pro        £719            320x240        Standalone            Amazon.co.uk

#5     FLIR TG267                            £591            160x120        Standalone            Amazon.co.uk



 






https://www.sparkfun.com/products/15948