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{{{#!wiki caution
'''Info'''

This page is currently under revision
}}}

{{{#!wiki MK_Nav
||<class="MK_Nav_Header">'''BL-Ctrl V1.2'''||
}}}

{{{#!wiki MK_select1
 * {{http://mikrokopter.de/images/deu.gif}} [[BL-Ctrl_V1.2|deutsch]]
 * {{http://mikrokopter.de/images/fra.gif}} [[fr/BL-Ctrl_V1.2|français]]
}}}
<<BR>>

See also: [[en/BL-Ctrl|BL-Ctrl]]
<<BR>><<BR>>

<<TableOfContents>>

{{https://www.mikrocontroller.com/images/BL-Ctrl11_unten1.JPG}}

= Differences to BL-Ctrl V1.1 =
 * Visually no difference to BL-Ctrl 1.1
 * PCB comes now with '''4-layer '''
 * Better heat dissipation of the FET's and the Shunts
 * Transistors T1, T2, T3 are replaced now by transistors with built-in resistors
 * Less sensitive to moisture <<BR>>

See also the version history [[Ctrl_History]].

= Choosing the address =
On the V1.2 the motor address is set by a solder jumper on the board.

{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=73036&g2_serialNumber=4}}

It is as follows:

{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=134733&g2_serialNumber=2}}

Here you can see the addresses and positions of the motor controls and also the direction of rotation of the assigned propeller: <<BR>> (Click image for high resolution)<<BR>><<BR>>

[[http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=97947&g2_serialNumber=1|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=97950&g2_serialNumber=2|http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=97947&g2_serialNumber=1}}]]<<BR>><<BR>>

The connection diagram: <<BR>> [[http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=92738&g2_serialNumber=1|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=92741&g2_serialNumber=2|http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=92738&g2_serialNumber=1}}]] <<BR>>


= Software =

Depending how many motors you will use on your copter you need for the upper addresses of the BL-Ctrl's a different software. This can be downloaded here: 
<<BR>><<BR>>

BL-Ctrl V1.2 - Adr. 1-4: [[http://svn.mikrokopter.de/filedetails.php?repname=BL-Ctrl&path=%2Ftags%2FV0.42%2FHex-Files%2FBL-Ctrl_V1_1_and_V1_2%2FBrushLess-Ctrl_MEGA8_V0_42_10A.hex|Download]]
<<BR>>
BL-Ctrl V1.2 - Adr. 5-8: [[http://svn.mikrokopter.de/filedetails.php?repname=BL-Ctrl&path=%2Ftags%2FV0.42%2FHex-Files%2FBL-Ctrl_V1_1_and_V1_2%2FBrushLess-Ctrl_MEGA8_V0_42_10A_ADR5-8.hex|Download]]
<<BR>>
BL-Ctrl V1.2 - Adr. 9-12: [[http://svn.mikrokopter.de/filedetails.php?repname=BL-Ctrl&path=%2Ftags%2FV0.42%2FHex-Files%2FBL-Ctrl_V1_1_and_V1_2%2FBrushLess-Ctrl_MEGA8_V0_42_10A_ADR8-12.hex|Download]]
<<BR>><<BR>>



= Assignment of the terminal =
On the pre-assembled BL-Ctrl V1.2 you need to solder the enclosed Elko:

{{attachment:BL-Ctrl_V1.2/Bl-Ctrl_v1_1.jpg}}

It is advisable to bend the capacitor by 90° so that it fit parallel to the outer side of the board.

Further you can see on the picture how to connect the I2C-Bus-Wires and the power supply.

<<BR>>

/!\ The controller is still sensitive to moisture and should be shrink wrapped with shrink tubing! For details see also BrushlessCtrl and water landing.

= Flying with 4S LiPo =
It is also possible and the same as with the BL-Ctrl V.1.1 to fly the MK with four-cell !Lipo's. See also [[4S-LiPos]].

Here you need to adjust the wirering in that way that the BL-Ctrl are hooked up directly to the power supply and __not__ over the switch of the Flight-Ctrl. That is necessary because the switch is not designed for those current and starting flashes coming with the high voltage.

= Schematic =
[[  http://gallery3.mikrokopter.de/var/albums/tech/BL_CTRL_1_2.gif?m=1409657727 | {{ http://gallery3.mikrokopter.de/var/resizes/tech/BL_CTRL_1_2.gif?m=1410788320 }} ]]

(click for high resolution)

Please note: In version 1.2 for T1-3 the part PDTC143 with integrated base resistor is used. The base resistors R3, R6 and R9 need to be changed through a low-resistance resistor, i.e. 100 Ohm.

##= Assembly layout =
##Top-side (Version 1.2):
##{{attachment:BL-Ctrl_V1.2/BL_CtrlV1_2_oben_bearbeitet.JPG}} <<BR>>
##LED1 = Green, LED2 = Red, NA- NB- NC- = IRFR1205 or IPD03N03LB or IRLR7843<<BR>>
##'''__INFO:__''' The resistor '''R11''' is 680 Ohm and not like on the picture 4,7 KOhm!
<<BR>> <<BR>>

##Bottom-side (Version 1.2):
##{{attachment:BL-Ctrl_V1.2/BL_CtrlV1_2_unten_korrigiert.JPG}} <<BR>>
##NA+ NB+ NC+ = IRFR5305 or FDD6637
= Troubleshooting =
If the BL-Ctrl have a fault, you can see this e.g. on the flashing red LED on the BL-Ctrl.<<BR>><<BR>>

How to find and fix a fault on this BL-Ctrl you can see here: [[BL-Ctrl_Fehlerbeseitigung|Troubleshooting]]

= Controlling with own Hardware =

Controlling the BL-Ctrl with own hardware is easy. 

== AVR (plain) ==
A sample code for nearly any AVR is given below. The code will spin up the selected motor with a given speed. This is just to give an idea on how to interface them.

{{{#!highlight c
#include <avr/io.h>
#include <stdint.h>
#include <util/delay.h>
// using I²C Master library from
// Peter Fleury ( http://jump.to/fleury )
#include "i2cmaster.h"

#define TWI_BLCTRL_BASEADDR 0x52

int main(void) {
    i2c_init();
    uint8_t motor = 0; // 0 -> Motor1, 1 -> Motor2 etc...
        uint8_t speed = 10;
    uint8_t ret;
    while (1) {
        ret = i2c_start(TWI_BLCTRL_BASEADDR + (motor << 1) + I2C_WRITE);
        if (ret) {
                        // release bus
            i2c_stop();
                        // failed... maybe print error or something
        } else {
            i2c_write(speed);
            i2c_stop();
        }
        _delay_ms(50);
    }
}
}}}


== Arduino ==

A sample code for Arduino compatible devices is given below. The code will spin up the selected motor with a given speed. This is just to give an idea on how to interface them.

{{{#!highlight c
#include <Wire.h>

void setup() {
    Wire.begin();
}

#define TWI_BLCTRL_BASEADDR 0x52

void loop() {

    int motor = 0; // 0 -> Motor1, 1 -> Motor2 etc...
    int speed = 10;

    // The Wire library uses 7 bit addresses throughout. If you have a 
    // datasheet or sample code that uses 8 bit address, you'll want to
    // drop the low bit (i.e. shift the value one bit to the right), 
    // yielding an address between 0 and 127.
    Wire.beginTransmission((TWI_BLCTRL_BASEADDR + (motor << 1)) >> 1);
    Wire.write(speed);
    Wire.endTransmission();

    delay(50);
}
}}}

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