I made a thing – it’s useful for me but probably not for you 🙂Continue Reading →
Many EPEver solar charge controllers have an RS485 communication port on them so you can connect a PC or Android device and read it’s statistics or update the settings. Continue Reading →
I was grateful to receive a package in the post from one of my subscribers. It contained everything I needed to build an LED PWM Dimmer circuit using an ESP8266-ESP01.
I used some code from Sparkfun as the basis of the code below and just made a few changes so that I could dim the LED rather than just turn it on and off.
I created this fairly simple circuit and Arduino sketch to check the labeled capacity of Lithium Ion 18650 batteries. It could easily be adapted to other types of batteries and discharge more than one battery at a time. If you power your arduino from a computer and monitor the serial port you can obtain results as it goes along and create pretty graphs of the results. http://admw.uk/iB
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