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Electricity Recharge Station with Prepaid Energy Meter Using Arduino



Could you please tell me model no. of GSM module SIM?? & share video of working of this project on your YouTube channel?? Thank you.
Recharge of more than 2 rupee is showing invalid in energy meter

Sir, There is an error in both the source code...


Arduino: 1.8.7 (Windows Store (Windows 10), Board: "Arduino/Genuino Uno"
E:\VISHAL\New folder\Recgarge\Recgarge.ino: In function 'void loop()':
Recgarge:141:19: error: 'printDigits2' was not declared in this scope
E:\VISHAL\New folder\Recgarge\Recgarge.ino: At global scope:
Recgarge:298:1: error: expected initializer before 'it'
 it adds a "0" to the beginning of the number, so that 5 minutes is displayed as "00:05:00", rather than "00:5 :00"
exit status 1
'printDigits2' was not declared in this scope

please copy code correctly .