Hi,
I tried to read values from 3-axis magnetic sensor HMC5883L breakout board with help of an Arduino board. And it worked fine !
However, I want to connect a HM10 module with this HMC5883L... but being a newbie in electronics (actually a total newbie to wires & pins world), I need help to know which pins to connect where?
Can someone help please... ?
Don't make me laugh by saying that you are trying to do BLUETOOTH development...students like you (i hope you are a student from India) in India thinks that bluetooth development is buying this HM series module and using it...NO IT'S NOT BLUETOOTH DEVELOPMENT...NOR BR/EDR or BLE
It's just a end-user bluetooth or BLE product like your handsfree headset, bluetooth audio etc...the only difference is it's a serial profile which you can use it as USB to TTL wirelessly or any other BLE service pre-installed...in your case HM10 has vendor specific service and characteristic with the UUID of FFE0 and FFE1 respectively. better double check the HM10 data sheet...
Connect the HM10 and HMC5883L with I2C pins, google for how to do it...;)
Now your HM10 is BLE peripheral and you have to code central device, either your smart phone or laptop with BLE will be the one as central device...you need to code now to access the service(FFE0) and characteristic(FFE1) values from your BLE peripheral, your option is Android or iOS for smartphones...windows and OS X for desktop or laptops...
ENJOY your coding 
Hi Antony,
Thanks for your reply 
I am changing the vendor firmware on HM10 to a custom code to send my custom values over bluetooth ( yes I am programming the module chip itself )
Trying to google out hmc to hm10 pins connections but not getting it...
But thanks for the rest of info in your reply
