Help with Maths (fridge consumption)

[vas]

Not there yet but hopefully soon I'll get round to changing the fridge thermostat to a microcontroller and PCB, then program in dynamic control of the temperature based on duty cycle, also measures current/voltage and has control of the speed so see what works best.
5 boards cost $20, Or was it £..

moved to surface mount everything I see! how easy is it to solder resistors like that? Cannot be easier than through hole ones!

 

[robertager1962]

Hi sorry no we are not in the Guardiana now, currently in Cartagena.
I made the window covers with poppers on the deck
to actually cover the windows (currently on at the moment (silver side inwards)) as the nights have gotten cold.
Our fridge is quite little, hence the low consumption. I will keep checking consumption as things hot up next year.

 

[GHA]

moved to surface mount everything I see! how easy is it to solder resistors like that? Cannot be easier than through hole ones!

No idea, jlcpcb solder all the surface mount already, just add terminals. I wouldn't stand much of a chance soldering those
The 20quid/dollars was for 5 complete boards with transistors and an INA219 current/voltage sensor.

Had to check, about 22 Euro for 5 boards plus delivery on top.

 

[vas]

No idea, jlcpcb solder all the surface mount already, just add terminals. I wouldn't stand much of a chance soldering those
The 20quid/dollars was for 5 complete boards with transistors and an INA219 current/voltage sensor.

Had to check, about 22 Euro for 5 boards plus delivery on top.

sorry thought the pic was of the real item, didn't realise you're posting a capture from EasyEDA
Have you received them yet, can you plz post a pic of the real thing (assess built quality - not your soldering techniques on the terminals!

cheers

V

 

[GHA]

sorry thought the pic was of the real item, didn't realise you're posting a capture from EasyEDA
Have you received them yet, can you plz post a pic of the real thing (assess built quality - not your soldering techniques on the terminals!

cheers

V

This is another board used for monitoring, 8 x voltage sensors, 2 current, 2 x nmea in/out, RPM from W terminal which might even work

Build quality excellent to my eye, which doesn't mean much but generally well regarded by those who know. Better than my soldering anyway

Back to the thread ......