[mr-controllino]

Hi,

The 20 pin Version is available … just write at sales@controllino.com

[mr-controllino]

Hello Tomas,

We are working on it … give us 2-3 weeks.

regards

Marco

[mr-controllino]

Hello Elvis,

The first 12 digital outputs of the MEGA are half bridges. They have a nominal current of 2A … and are limited to 3A. If this 3A are reached … the driver chip sets an error. Can only be reseted by a global RESET of the device. Depending on the Version of MEGA you have … this can also be deactivated.

But the much better thing would be to use some of the digital outputs 12-23. They are high side switches and are self-limiting. And they are not able to produce an OVL also with peak currents up to 3, 4, 5A. They are more thermally limited.

So please try to use an output 12-23 and let me know if this solved your problems.

Regards
Marco

[mr-controllino]

Hello Gerd,

It is always better to use proper Level shifters. They are available on very small boards … can even be implemented in a cable.

regards
Marco

[mr-controllino]

Hello Jarod997,

1) The digital outputs on the screw terminals are OUTPUTS. No INPUTS. Behind there is a digital high-side switch. Only on the pinheader pins you can use the IO as input or output … and only on 5V.

2) A high-side switch is an electronic switch. You are measuring something that is “not” there. Since an electronic switch NEVER cuts off 100% … you always have some nA or uA flowing. So, if we can agree that you would never use an output without a load … even a 100k resistor will perfectly pull the output to ground. You only can read a voltage because you a measuring with a Multimeter with some Giga-Ohm input resistance.

regards
Marco

[mr-controllino]

Hello Friedl,

The OVL LED is not green … it is RED. And if the OVL would be on … you would recognize it!

1) If you supply only 5V over USB … both LEDs (12V/24V) are green. This is normal.

2) If you switch on the power supply with 24V … of course the 12V LED goes orange and the 24V LED goes green at MINI, MAXI, MEGA. This indicates the supply mode you are in.

3) The MAXI Automation is somehow special because it is only for 24V supply. So, the 12V LED is there but not used.

4) If you disconnect the 24V power supply … but you still have the USB connected … the Logic part of the internal parts are still powered. But the more powerful parts … like digital power drivers are not supplied on one side. In this case it can happen that the OVL LED goes on because the driver thinks he is not able to deliver the current needed. So, it is indicating OVL. As you have discovered by yourself … it goes away after some time.

To solve all of this … supply the CONTROLLINO with the voltage needed … which is 12V or 24V over a proper power supply. The USB supply is quasi only for programming.

regards
Marco

[mr-controllino]

Hi,

The “problem” is that the digital outputs of the MAXI are High-Side switches. So, they are like a normal switch … they will switch the supply voltage to the output when “HIGH” … and they are “OFF” or disconnected when “LOW”.

If you have a LED stripe like yours with common 24V … you need a switch that pulls to GND.

3 Possibilities:

1) You can switch to the CONTROLLINO MEGA … it has 12 Half-Bridges (they will switch to “GND” when “LOW”.

2) You can buy another LED strip with common Ground.

3) If you only want to switch ON-OFF the LED Strip … you can use the Relays.

regards
Marco

[mr-controllino]

Hello Antonio,

Can you please check if the pins are working properly? So can you please make a “blink” on the pins and see if the 2 pins are switching accordingly?

Regards
Marco

[mr-controllino]

Hi,

And what voltage do you measure on this D3 on X1?

regards
Marco

[mr-controllino]

Hi,

1) What kind of SIM800L are you using? There are some with carrier boards and some plane boards.

2) What is the power supply for the SIM800L? It needs special voltage and a lot of current!

3) It is always better to use pins that have unique communication functions. Like the UART2 on the X2. Pins that are used as inputs are additionally protected by 1k serial resistors.

regards
Marco

• This reply was modified 3 years, 3 months ago by  mr-controllino.
• This reply was modified 3 years, 3 months ago by  mr-controllino.

[mr-controllino]

Hello Lucko,

Have you installed the CONTROLLINO Libs correctly?

But you can always use the original Arduino pin names (see Pinout the blue numbers).

So in your case use …

int startPin = A15;

int sensorPin = A14;

int outputPin = 12;

regards
Marco

[mr-controllino]

Hello Seaimager,

Yes of course this works. Directly over the pinheader.

regards

Marco

[mr-controllino]

Hello PaulsM,

It is working properly. The “problem” is that the CONTROLLINO MINI, MAXI, MAXI-A and also 12 outputs of the MEGA are High-Side Switches.

Imagine a switch … that is ON and OFF. A switch does not force the output to GND. It simply disconnects.

So you can only drive a unipolar stepper motor with it. So no 4 wire stepper will work. It only works with the 12 half bridge outputs of the MEGA.

And if you use a stepper motor directly with CONTROLLINO … please make sure it has a high internal resistance. Because CONTROLLINO only has voltage outputs … there is no special current limitation.

regards

Marco

[mr-controllino]

Hello Mark,

The MAXI Automation will work from 10-28V … only the screw terminal inputs are fixed at 24V volts.

But since these inputs are mostly analog inputs … you can easily make a 12V digital input if you use a small IF loop.

You only have to set the level you want to switch to HIGH.

Basically you can make also a digital 5V input with this trick.

regards

Marco

[mr-controllino]

Hi,

The anlaog inputs A4 + A5 are only analog inputs.

So you can make a small IF loop to make it a digital input.

regards

Marco