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Unable to pair with a Magellan speed / cadence sensor

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Total Posts: 2

Joined 2015-10-08

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I have two Magellan sensors:
1. A heart rate monitor (model SHRM1G).
2. A combined speed and cadence sensor (model BKM4G).

I have a microcontroller connected to an ANT+ nRF24AP2 module and have written software to control the ANT+ nRF24AP2.

I have successfully paired and received broadcast data from the heart rate monitor (using the "ANT+ network key" as specified on the thisant web page).

But I cannot get the combined speed and cadence sensor to pair. The only changes to the pairing process are the values for the device type and channel period. Before each sensor pairing I send a reset message (0x4A) to the nRF24AP2 so that each pairing process starts with a clean slate.

For the HRM I am using device type = 0x78 and channel period 8070. Result is pairing success.
For the cadence sensor I am using device type = 0x7A and channel period 8102. Result is pairing timeout.
For the speed sensor I am using device type = 0x7B and channel period 8118. Result is pairing timeout.
     
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Total Posts: 745

Joined 2012-09-14

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A "combined speed and cadence" sensor has its own device type, 0x79, which is separate from standalone speed or cadence sensors.      
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Total Posts: 2

Joined 2015-10-08

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Thanks Harrison. All working now.