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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 897 | harrie | 1 | This branch v0.69k_J16J17 is a copy of v0.69k and has support for switchting J16 (POTI2 in Koptertool) and J17 (POTI3 in Koptertool) on the FC board: |
| 2 | |||
| 3 | |||
| 4 | DIFFERENCES: |
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| 5 | |||
| 6 | main.c -> line 119: |
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| 7 | DDRC changed from 0x81 (128+1) to 0x8D (128+8+4+1) to make PC2 and PC3 outputs |
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| 8 | |||
| 9 | main.h -> lines 22-25: |
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| 10 | defined references for J16 (=PortC2 output2) and J17 (=PortC output3): |
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| 11 | #define J16_ON PORTC |= 0x04 |
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| 12 | #define J16_OFF PORTC &=~0x04 |
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| 13 | #define J17_ON PORTC |= 0x08 |
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| 14 | #define J17_OFF PORTC &=~0x08 |
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| 15 | |||
| 16 | fc.c -> line 634-637: |
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| 17 | added switching behaviour based on POTI2 and POTI3 |
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| 18 | if POTI2 > 75, output PC2 (J16) will switch to ground = ON |
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| 19 | if POTI2 <= 75, output PC2 (J16) will remain open collector = OFF |
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| 20 | if POTI3 > 75, output PC3 (J17) will switch to ground = ON |
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| 21 | if POTI3 <= 75, output PC3 (J17) will remain open collector = OFF |
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| 22 | |||
| 23 | |||
| 24 | NOTE on J16/J17 usage: |
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| 25 | - use an optocoupler to switch external devices like camera's |
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| 26 | - you can drive a LED straight on J16 or J17 (cathode on J16/J17, anode on +5V), but do not exceed 100mA (otherwise 7805 stabiliser gets too hot). T1 and T2 can handle each max. 500mA but mind the 7805 on the FC |
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| 27 | - if you want to drive higher currents (for external high power LED's): use an extra FET or a BD transistor (eg: BD138 PNP) via the battery supply (not the +5V from the FC) |
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| 28 | |||
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| 30 | Good Luck! |
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| 31 | Harrie - MosaKopter |