In the following table are showed Arduino Uno/MakerUNO to Arlok shield connections.
Pinout is reported also for the older version named AR.L.O.
If a cell is empty, means that pin is free to use and reported on a dedicate header. The interrupt column shows the interrupt number associated with the pin (valid only for boards with the ATmega328), but is reccomended to use the Arduino function digitalPinToInterrupt(Pin) such as used in the Arlok sketches.
| Arduino PIN | AR.L.O. (obsolete) | Arlok (current) | Notes | Interrupt |
|---|---|---|---|---|
| (empty) | Not available | The unused pin near IOref | ||
| IORef | Not available | |||
| Reset | Reset Button | Reset Button | ||
| 3.3V | ||||
| 5V | ||||
| GND | ||||
| GND | ||||
| Vin | Not available | unused on MakerUNO | ||
| A0 | Trimmer VR1 | Trimmer VR1 | ||
| A1 | ||||
| A2 | ||||
| A3 | ||||
| A4 | Don't use if OLED! | Not available | Shared with SDA | |
| A5 | Don't use if OLED! | Not available | Shared with SCL | |
| D0/RX | UART RX > COMM RX | UART RX > COMM RX | ||
| D1/TX | UART TX > COMM TX | UART TX > COMM TX | Through voltage divider | |
| D2 | Sonar - Echo | Pushbutton 1 | 'button' on MakerUNO | 0 |
| D3 | Sonar - Echo | 1 | ||
| D4 | Sonar - Trigger | |||
| D5 | Pushbutton 2 | |||
| D6 | Pushbutton 1 | |||
| D7 | Pushbutton 2 | |||
| D8 | Sonar - Trigger | Buzzer (if makerUNO is used) | 'buzzer' on MakerUNO | |
| D9 | ServoMotor - Right | ServoMotor - Right | ||
| D10 | ServoMotor - Left | ServoMotor - Left | ||
| D11 | ||||
| D12 | ||||
| D13 | ||||
| GND | ||||
| ARef | ||||
| SDA | OLED SDA | OLED SDA + Grove + I2C header | Shared with A4 | |
| SCL | OLED SCL | OLED SCL + Grove + I2C header | Shared with A5 |
- On Arlok shield some pin are not reported on the PCB (such as the
IOrefand the unused pin near it,A4andA5), so you can use fewer male headers. - On both Arlok and AR.L.O.,
A3is used in some sketches as seed for random number generator initialization; so, if you want to useA3in your own application, please change the code accordly. - On Arlok all free digital pins are reported on
EXTheader along with 5V and ground, and the 3 free analog inputs are reported on 3 separate headers having power supply each while on on AR.L.O. free digital pins are reported on 2 headers:EXT2(D11,D12,D13) andEXT1(D3,D4,D5) and the analog inputs are reported to simple pads.