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Archive for May, 2013
ROV power board
24. May 2013 15:12 by Jens Willy Johannsen Categories: Projects
Here are Eagle schematic and board files as well as BOM for the ROV power board.
I moved all the high voltage/current stuff to a separate PCB and separated the control connections by using optocouplers.
That should help avoiding the electrical noise from the power MOSFETs switching at 20 kHz for the thruster motors.
BOM
Amount | Item | Spec | RS no. | Comment |
---|---|---|---|---|
1 | TE Micro-MaTch 12 pos female | 6804978 | Or just solder wires directly to the board | |
1 | TE Micro-MaTch 12 pos male | 6804993 | ||
1 | 12 lead ribbon cable | 2899852 | This is actually 14 leads. Peel off two or use separate wires. | |
6 | IRLS3034-7 MOSFET | 6887257 | ||
6 | FOD3180 optocoupler DIP-SMD | 6712706 | ||
7 | Screw terminals BLK | 4813989 | ||
7 | Screw terminals RED | 4813973 | ||
6 | SMD diode | S5BC | 7514821 | |
6 | SMD capacitor | 100 µF | 7472871 | |
6 | Ceramic bypass cap. 0805 | 0.1 µF | 6480979 | Or any other 0.1 µF 0805 ceramic cap. |
Files

Great reply to the “3D printed gun” media frenzy
7. May 2013 15:03 by Jens Willy Johannsen Categories: 3D printing
The past few days, the media have been having a field day with the "now you can 3D print you own gun" story. (Here on BBC for example).
Do yourself a favour and read this comment on Hackaday before you join the choir…
