Arduino based USB Charger Quality Tester - A war on cheap chargers
Sketch/schematic by Ben Duffy,
http://microsoldering.com.au,geelongmicrosoldering@gmail.com
This code is in developement. It is likely to have bugs.
It is not optimised, and a web of horrible coding ideas.
I eventually want to be able to measure current too.
RAPIDILY CHECKS FOR VOLTAGE CHANGES
REPORTS NOISE P-P (RANGE)
10mV Accuracy
WORKS WITH SERIAL AND 16X2 LCD
TESTS CHARGERS WITH AND WITHOUT LOAD
TEMPERATURE TESTING AND ALARM
GOOD AND BAD LED's
AUDIBLE TONES VIA PEIZO
BATTERY MONITORING AND PWR SAVING
HIGHLY CUSTOMISABLE WITH VARIABLES
CAN BE CALIBRATED (to around 10mV)
-Some kind of loop bug exists right now, so starting via serial (at the press a key prompt via serial monitor) will cause an infinite loop. Use the Start Button instead (connect startpin to gnd momentarily)
-A bug exists that randomly causes test not to start after periods of inactivity (everything else happens as expected when button is pressed but test does not start. Reset fixes)
-The time between power save reminders takes longer than expected
-measure current by measuring voltage on shunt resistor on load return
-lcd final report output is not finished
-Need to finish temp monitor code at end of loop. does not report min/max temp to user in final report otherwise warnings and alarms are working.
-Optimise the code in many ways. Low priority. Ill do it when i have no memory left or have to for some reason
-Create schematic / circuit diagram
-Explain use, calibration, ect