Forum >problem with 2A motorshield
problem with 2A motorshield
Goose 2011-12-27 03:20:19 5856 Views6 Replies Hello,
I have a problem with the motor controller 2A DR10009!
This controlerboard is connected to my FEZpanda board.
Both have their power at a 12 V battery.
I have one motor connected to the motor controller.
As soon as I switch on the power, the motor running, while not even a program in the FEZpanda is loaded!
When I measure with my scoop on the connections, I see:
12V on the M1 + M2 + and no pulse
I measure 1.9V on digital 4/5/6/7
Is there a schema from this board?
Who can help me?
My apology for my not so best English
Greetings,
Henk
I have a problem with the motor controller 2A DR10009!
This controlerboard is connected to my FEZpanda board.
Both have their power at a 12 V battery.
I have one motor connected to the motor controller.
As soon as I switch on the power, the motor running, while not even a program in the FEZpanda is loaded!
When I measure with my scoop on the connections, I see:
12V on the M1 + M2 + and no pulse
I measure 1.9V on digital 4/5/6/7
Is there a schema from this board?
Who can help me?
My apology for my not so best English
Greetings,
Henk
2011-12-29 10:58:05 The problem is solved!
By a reset/start of the FEZpanda sign all ports by default set as input with a pull-up resistor (60 kOhm to about 3.3 volts).
On the motor shield are pull-down resistors on inputs used (in the diagram R1 / m R4) of 100 ohm.
The inputs of the motor shield is then held by the voltage division (60 ohm and 100 ohm to 3.3 volts) a voltage of about 2 volts.
This is a voltage value that lies in the undefined area of ??the motor shield .
The solution to this problem is applying additional pull-down resistors on the motor plate held.
This causes the ingangenin defined the '0 'area drawn.
The solution has four resistors of 15 kOhm application.
You can do this by R1 / m R4 (100 ohm resistors) exchange by 15 ohm resistors or places a 15 kOhm resistor parallel to the 100 ohm resistor!
Thanks for support!
Gr
Henk Goose
By a reset/start of the FEZpanda sign all ports by default set as input with a pull-up resistor (60 kOhm to about 3.3 volts).
On the motor shield are pull-down resistors on inputs used (in the diagram R1 / m R4) of 100 ohm.
The inputs of the motor shield is then held by the voltage division (60 ohm and 100 ohm to 3.3 volts) a voltage of about 2 volts.
This is a voltage value that lies in the undefined area of ??the motor shield .
The solution to this problem is applying additional pull-down resistors on the motor plate held.
This causes the ingangenin defined the '0 'area drawn.
The solution has four resistors of 15 kOhm application.
You can do this by R1 / m R4 (100 ohm resistors) exchange by 15 ohm resistors or places a 15 kOhm resistor parallel to the 100 ohm resistor!
Thanks for support!
Gr
Henk
Goose 2011-12-28 02:28:58 Goose,
My mistake, developer sent over the wrong schematic....I have fixed the link, try opening it again.
the right: [url=https://www.dfrobot.com/image/data/DRI0009/Arduino%20L298%20Shield%20Sch.pdf]schematic[/url] Hector
My mistake, developer sent over the wrong schematic....I have fixed the link, try opening it again.
the right: [url=https://www.dfrobot.com/image/data/DRI0009/Arduino%20L298%20Shield%20Sch.pdf]schematic[/url]
Hector 2011-12-28 02:10:18 Hi Hector,
Thanks!
I think IC2 isn,t on this board??(no power LED!)
I see that all the pin's 4/5/6/7/ have a 10K pulldown to the GND.
I have 2.1 V on pin 4/5/6/7/ is this high or low for the IC3 and L298??
Henk Goose
Thanks!
I think IC2 isn,t on this board??(no power LED!)
I see that all the pin's 4/5/6/7/ have a 10K pulldown to the GND.
I have 2.1 V on pin 4/5/6/7/ is this high or low for the IC3 and L298??
Henk
Goose 2011-12-28 01:22:24 Hi Henk,
Found the: [url=https://www.dfrobot.com/image/data/DRI0009/Arduino L298 Shield Sch.pdf]schematic[/url] Hector
Found the: [url=https://www.dfrobot.com/image/data/DRI0009/Arduino L298 Shield Sch.pdf]schematic[/url]
Hector 2011-12-28 00:31:14 Hallo Hector,
Yes, i read the wiki
The power to the shield is coming extern from the battery, i have the jumpers for that to the power in pins.
And i have 4 jumpers (like the wiki page)to PWM.
A schematic will be useful!
Thanks
Henk Goose
Yes, i read the wiki
The power to the shield is coming extern from the battery, i have the jumpers for that to the power in pins.
And i have 4 jumpers (like the wiki page)to PWM.
A schematic will be useful!
Thanks
Henk
Goose 2011-12-27 18:30:09 Hi Henk,
Have you read through the: [url=https://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_(L298N)_(SKU:DRI0009)]wiki[/url]
I will try to dig up a schematic for you.
How are you providing power to the shield? through the power terminal or through the FEZ?
Have you verified all of your jumper settings?
Hector
Have you read through the: [url=https://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_(L298N)_(SKU:DRI0009)]wiki[/url]
I will try to dig up a schematic for you.
How are you providing power to the shield? through the power terminal or through the FEZ?
Have you verified all of your jumper settings?
Hector 