The Upgrade of Me Series Electronic Modules

AllElectronicModules

During the last few months, we made an upgrade of all the Me series electronic modules. We made a big change on Me-Base Shield, changed the connector from 4P4C RJ11 to 6P6C RJ11 connector. In each of the connector on Me-Base Shield, we add an I2C interface so that these ports on Me-Base Shield can be used both for the electronic modules we have now and other I2C devices we will develop in the future. At the same time, the connector on other electronic modules also have been changed from 4P4C RJ11 to 6P6C RJ11.

1. The upgrade of Me-Base Shield

The following picture shows the new Me-Base Shield with 8 connectors 6P6C RJ11.

Me-BaseShield

The following picture shows two versions of Me-Base Shield.

Me-BaseShield

Let’s see more details and changes on the upgrade Me-Base Shield.

BaseShield

(1) In each of the connector on Me-Base Shield, we add an I2C interface so that these ports on Me-Base Shield can be used both for the electronic modules we have now and other I2C devices we will develop in the future. Port 5 is an individual I2C interface.

(2) Besides the 8 RJ11 ports, there are 2.54mm pin pad on the board, all I/O pins on the bottom Arduino board are connected to these pads.

(3) There are two Power Supply Connectors on the board, so you can use them as power supplies.

2. The Upgrade of IR receiver

In the previous version of the IR receiver, the main controller (Arduino Uno board) is in charge of decoding the IR signal, this may cause non-response to the controller, and especially there is other calculation need to be done by the chip. It may have a hard time for the users to use the IR Receiver. The IR Receiver is not sensitive enough. In the new version of the IR receiver design, we make a big change and put a special decoder IC on the receiver.

The following picture shows the new Me-Infrared Receiver with a connector 6P6C RJ11.

Me-InfraredReciverDecode

The following picture shows two versions of Me-Infrared Receiver.

IR

Let’s see more details about the new design of the IR receiver.

Backup_of_Me-Infrared Reciver Decode

In this version, we add an IR decoder IC BC7210 on the board for decoding the IR signal. By adding the BC7210, it may extremely save the chip resources of the main control board. So at this time, Arduino will have more computing capacity to response the commands, and the real-time response is possible.

BC7210 is a custom IR decoder chip. It can decode the IR signal both under Philips RC5 IR protocol and NEC IR protocol. The IR remote controller we used now is under NEC IR protocol.

Wiring Me-Infrared Receiver to Me-Base Shield is simplified, you can use a 6Pin RJ11 telephone cable to connect them. If you want to connect Me-Infrared Receiver with other board but not Me-Base Shield, you can solder a 4 pin male header on the 2.54mm pads on Me-Infrared Receiver board to connect them with jumper wires.

3. The Upgrade of Me-Servo Driver

In the previous version of the Me-Servo Driver, the power supply is not efficient. And that may cause jittery of the servo sometimes. In the new version we solve the problem of power supply and make the Me-Servo Driver more stable and efficient.

The following picture shows the new Me-Servo Driver with a connector 6P6C RJ11.

IMG_5867_600

The following picture shows two versions of Me-Servo Driver.

Servo

Let’s see more details about the new design of Me-Servo Driver.

Me-ServoDriver2

Me-Servo Driver can drive two servos, with a 6Pin RJ11 port which contains power lines and signal lines. Wiring Me-Servo Driver to Me-Base Shield is simplified, you can use a 6Pin RJ11 telephone cable to connect Me-Servo Driver with Me-Base Shield. If you want to connect Me-Servo Driver with other board but not Me-Base Shield, you can solder a 4 pin male header on the 2.54mm pads on Me-Servo Driver board to connect them with jumper wires.

We also add an External Servo Power on the board, so that you can use other power supply for the servos too.

The power supply of the previous version is not efficient enough and that may cause the jittery of the servos. So in the new version we rebuilt the power supply of the servo driver by using a high efficiency DC-DC converter. The DC-DC converter converts the input voltage into suitable voltage for servos, which is 6V, no need to find special power supply for servos. After that the servo may work well without obvious jittery.

4. The Upgrade of Me-Line Finder

In the previous version of Me-Line Finder, the Me-Line Finder sensors are not sensitive enough and sometimes the sensors register black when over plain white printer paper. In the new version we tested the sensors carefully and solve the problem. The sensors are more sensitive now.

The following picture shows the new Me-Line Finder with a connector 6P6C RJ11.

Me-Line Finder

The following picture shows two versions of Me-Line Finder.

LineFinder

Let’s see more details about the new design of Me-Line Finder.

Me-LineFinder

 

 

We added a Protection Diode on it to protect the module from connecting on the wrong port on Me-Base Shield.

 

In order to solve the problem of insensitive, we change the values of the resistances on the board and test it carefully. Now this problem didn’t exist anymore.

5. The Upgrade of Me-Motor Driver

Me-Motor Driver can driver one DC motor, with a RJ11 port which contains power lines and signal lines, wiring is simplified.

The following picture shows the new Me-Motor Driver with a connector 6P6C RJ11.

Me-Motor Driver

 

The following picture shows two versions of Me-Motor Driver.

MotorDriver

Let’s see more details about the new Me-Motor Driver.

Me-MotorDriver

6. The Upgrade of Me–Ultrasonic Sensor

Me–Ultrasonic Sensor module is designed for distance measurement or obstacle avoidance of the robotics.

The following picture shows Me–Ultrasonic Sensor with a connector 6P6C RJ11.

IMG_0877

The new Me-Ultrasonic Sensor just changed the connector from 4P4C RJ11 to 6P6C RJ11 connector. And we also added a Protection Diode on it to protect the module from connecting on the wrong port on Me-Base Shield.

7. The Upgrade of Me-Bluetooth

Me-Bluetooth is designed to connect with mobile phones by using the specific APP. The Bluetooth module provides TTL level UART interface.

The following picture shows Me-Bluetooth with a connector 6P6C RJ11.

Me-Bluetooth

The following picture shows two versions of Me-Bluetooth.

Bluetooth

The new Me-Bluetooth just changed the connector from 4P4C RJ11 to 6P6C RJ11 connector. And we also added a Protection Diode on it to protect the module from connecting on the wrong port on Me-Base Shield.

8.Me-Lego Motor Bridge

Me-LegoMotorDriver is a Lego compatible board that can driver two Lego brand motors by Arduino.

The following picture shows Me-LegoMotorDriver with a connector 6P6C RJ11 and two Lego motor connectors.

Me-LegoMotorDriver

9. Me-Limit Switch

Me-Limit Switch sensor is a physical switch. It can tell the robot whether it is in contact with a physical object or not. Depending on how the sensor is set up, this can tell the robot a lot of different things. The limit switch on this board is high quality switch from Omron. It sends a signal to the controller when it is triggered.

The following picture shows Me-Limit Switch with a connector 6P6C RJ11.

Me-Limit Switch

10. Me-RJ11 Adapter

Me-RJ11 Adapter is an adapter that converts 6P6C RJ11 connector to two I2C interfaces and two 3 pin signal interfaces. You can connect it on Me-Base Shield or other Me series modules to convert 6P6C RJ11 connector to other interfaces.

The following picture shows Me-RJ11 Adapter with a connector 6P6C RJ11.

Me-RJ11 Adapter

11. Cable

We provide two kinds of cables for the wiring. one is the 6P6C to 6P6C cable for the connecting of the new version Me series electronic modules. The other one is a 6P6C to 4P4C cable for the connecting of the old version Me series electronic modules to the new Me-BaseShield.

RJ11_Cable

  • Posted on July 13, 2013 - 11:02 am
  • By eric
  • Posted in
2 comments so far
  • Marcelo says:

    Hi, can the new IR receiver decode module be connected to the old me-shield? If yes, what is the pin-out for the cable?
    Thanks,

    • Christina says:

      Yes, the new IR receiver decode module can be connected to the old me-shield. You need to use a 6 pins to 4 pins converter cable control port 3,4,6.

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