Modifications to my Arduino Pro Mini INA219 Ammeter with OLED display, to turn it into a Wattmeter
https://github.com/olikraus/u8g2/wiki/u8g2reference #print
https://www.arduino.cc/en/Serial/Print
https://github.com/olikraus/u8g2/wiki/u8g2reference #print
https://www.arduino.cc/en/Serial/Print
I like the font. What is it?
can you remake this with 2 above displays in one promini and current module for showing watt and current in each display with change of i2C address and jumper position on back side of lcd
Why complicate things, already resistance value is known. Simply (I^2)R for Power
Why not using an if – else – and change the mA, A automaticly how high the input is. Over 1000 mA kann show as 1A. Very easy to code.
You could always code to display mA for 20 seconds the W for 20 seconds and you would have the best of both worlds
I am attempting to put together some gear for fixing old radios on a shoestring budget (Forced upon me by the State who declared me, a 100 percent disabled cop retired. In their congratulations memo, they informed me that since I was retired, they cut my paycheck in half.) So, this should get me a nice watt/mA meter to test the power in the units I work on.
I enjoy your style of videos very much. Making errors, discussing them and getting closer to the solution step by step is very satisfying. I feel like I'm learning a lot from you. Thanks!
It is amazing what I just learned from this video. I was proud of myself. There were things I "guessed" before you did them and I was right and you were right. I love watching your videos, Julian. You are just great. I am eventually going to get the heater/furnace. I want to do more research as it involves fire. I want to make sure I understand it fully. I am sure it will be OK. A guy (Living the Van Life) put one in his VW Westfalia and did an awesome job. I think it is working great for him. Thanks Julian.
And Yes! I now have a better understanding of how to make a working OLED Ammeter and Watt Meter. Awesome!!
a great idea is to modify this circuit adding only one high power resistor and some code to make it auto measure the internal resistance of any battery. i am trying to do that but your skills are better. i think everyone will find that usefull.
Be careful when your playing with ground references that are not floating as you may have catastrophic failures that kill your equipment. EEVBLOG has a great video on this.
Hello Julian i know this is a older video but the mA you can also make the font size smaller and push it to the right to get it looking right.
Would there be a way so you could cycle between both modes? Like a refresh or something so it states mA refreshes and states Wattage?