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| NormanV:
I wish to fit a tachometer to the milling machine that I am building, I have bought one but the sensor is too large to fit in the available space. I have almost no knowledge of electronics, could anyone suggest a smaller replacement for the sensor that I have, it measures 62mm long x 12mm dia. The diameter is not the problem, it is the length. Here is the data from the sensor that I have. Thanks, Norman |
| John Rudd:
Norman, I got some Hall effect sensors from EBay....... Already mounted on a pcb with connections ready to wire up to tacho....around a couple of quid iirc.... Only thing is they come from afar if you can wait? http://www.ebay.co.uk/itm/Hall-Sensor-Module-for-Magnetic-Field-Detecting-0-15V-/320748421434?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item4aae18813a http://www.ebay.co.uk/itm/Hall-Entry-Sensor-Module-for-Magnetic-Field-Detecting-0-15V-DC-/181192549703?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2a2feae547 , Even cheaper..... |
| NormanV:
Hi John, thank you for your speedy reply. This is the sensor that I have. It is completely enclosed, and safe from debris. I was hoping that there might exist a similar product but in a smaller package. Norman |
| Chuck in E. TN:
You can use a hall effect transistor, about the size of a pencil eraser, and enclose the leads and the sensor itself in heat shrink tubing. Should be available at your local electronics shop. The hall effect uses a small magnet to trigger it. I used one for the pickup on my X2 mill. Chuck |
| John Rudd:
Chuck, Trouble is here in blighty that we don't have shops like you that side of the pond....so he'd struggle... I suggested the little module to save him the aggro... His choice...... |
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