v3.3.1.900
Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cash flows from operating activities    
Net loss $ (1,852,301) $ (2,830,047)
Adjustments to reconcile net loss to net cash used in operations:    
Depreciation 13,155 33,023
Amortization of patents 113,385 113,071
Bad debt expense 36,763 92,224
Adjustment to the fair value of embedded derivatives 50,809 (65,962)
Accretion of interest on convertible notes 168,708 21,889
Unrealized gain on fair value adjustment of common stock warrants   (9)
Stock-based compensation expense 224,011 110,200
Non-cash settlement of prior debt owed (769,148)  
Changes in assets and liabilities:    
Accounts receivable 412,304 (293,902)
Other receivables 21,378 100,612
Inventory 58,264 209,077
Prepaid expenses and other current assets 158,544 246,669
Other assets 123,233 1,706
Accounts payable 324,998 1,159,974
Accrued liabilities and accrued warranty (276,657) (461,100)
Deferred revenue 15,450  
Net cash used in operating activities (1,177,104) (1,562,575)
Cash flows from financing activities    
Borrowing on long-term debt 600,000 650,000
Repayment of notes payable (142,416) (14,232)
Borrowing on line of credit, net   500,000
Repayments on capital lease obligations (299) (4,414)
Proceeds from securities purchase agreement 676,590 550,000
Payment of placement agent and registration fees and other direct costs (36,618) (91,981)
Employee taxes paid for vesting of restricted stock (8,692) (4,102)
Net cash provided by financing activities 1,088,565 1,585,271
Net (decrease) increase in cash (88,539) 22,696
Cash    
Beginning of period 150,081 127,385
End of period 61,542 [1] 150,081
Supplemental cash flows disclosures:    
Cash paid during the period for interest 57,580 6,759
Supplemental disclosure of non-cash financing activity:    
Embedded derivatives on convertible note issuances 122,630 243,889
Grant of warrant on issuance of convertible note 170,767 53,623
Preferred deemed dividend   875,304
Conversion of preferred stock to common stock 1,168,787 2,079,933
Conversion of convertible note to common stock 786,551  
Preferred stock dividends paid in common stock 18,927 153,305
Return of Series D convertible preferred stock   80,123
Embedded derivative converted to equity 221,768  
Preferred stock issued for payment of financial advisor fees   230,000
Prepaid Expenses and Other Current Assets [Member]    
Supplemental disclosure of non-cash financing activity:    
Note issued 121,100 144,071
Financial Advisory Services Fees [Member]    
Supplemental disclosure of non-cash financing activity:    
Note issued 160,000 $ 60,000
To Settle Claim [Member]    
Supplemental disclosure of non-cash financing activity:    
Common stock issued to settle claim $ 250,000  
[1] The condensed consolidated balance sheet as of December 31, 2014 has been derived from the audited consolidated financial statements as of that date.