Hi,
Yes indeed, that is certainly not the "normal" Fine Offset Vane PCB. BUT the external sensors hardware LOOKs like the FO external sensors and the PCB is exactly the same shape. So either this is a new FO design or "Holman" have decided to buy FO sensors (or their plastics housings) and fit their own PCB/components.
The PCB looks as if it might have 8 Hall-Effect (magnetic) sensors (little black blobs) in place of the familiar Reed switches of the normal FO Vane assembly and perhaps the large "blob" in the middle is a microcontroller. The original FO sensor gives only a variable resistance so requires only two wires, but anything using Hall effect switches (and/or a microcontroller) will also need supply rails (i.e. Ground and +Volts) in addition to a switch or "signal" wire (the second contact of a switch might be connected to ground or supply). From a photo we can only guess if the "output signal" is a varying voltage (analogue signal) or perhaps some form of data protocol (e.g. a serial data interface such as "RS232"). Do you have any electronics equipment and/or knowledge to "Reverse Engineer" that board? If so I may be able to offer a few hints.
Finally, it appears that the Black wire in the photo is not connected to anything, is this so ? Wires breaking off is a notorious problem when dismantling the FO Vane sensors.
Cheers, Alan.
Yes indeed, that is certainly not the "normal" Fine Offset Vane PCB. BUT the external sensors hardware LOOKs like the FO external sensors and the PCB is exactly the same shape. So either this is a new FO design or "Holman" have decided to buy FO sensors (or their plastics housings) and fit their own PCB/components.
The PCB looks as if it might have 8 Hall-Effect (magnetic) sensors (little black blobs) in place of the familiar Reed switches of the normal FO Vane assembly and perhaps the large "blob" in the middle is a microcontroller. The original FO sensor gives only a variable resistance so requires only two wires, but anything using Hall effect switches (and/or a microcontroller) will also need supply rails (i.e. Ground and +Volts) in addition to a switch or "signal" wire (the second contact of a switch might be connected to ground or supply). From a photo we can only guess if the "output signal" is a varying voltage (analogue signal) or perhaps some form of data protocol (e.g. a serial data interface such as "RS232"). Do you have any electronics equipment and/or knowledge to "Reverse Engineer" that board? If so I may be able to offer a few hints.
Finally, it appears that the Black wire in the photo is not connected to anything, is this so ? Wires breaking off is a notorious problem when dismantling the FO Vane sensors.
Cheers, Alan.