To connect two L293D Motor Driver ICs (Front and Rear) with the Particle Argon board (U2), follow these steps:

After everything is connected, you'll need to program the Particle Argon board to control the motors via the connected pins. Using the appropriate libraries and functions, you can control the speed, direction, and enable/disable status of the motors.

Can I connect VCC1 and VCC2 pins to Li+ pin of Argon?

Yes, you can connect the VCC1 and VCC2 pins of the L293D Motor Driver ICs (Front and Rear) to the Li+ pin of the Particle Argon board, provided that the motors' voltage and current requirements are within the limits of the Li+ pin and the battery connected to the Argon board. The Li+ pin is typically connected to an external Lithium-ion or Lithium-polymer battery.

However, keep in mind that motors can draw significant current, especially under load or when starting. Ensure that the battery can safely supply the required current to prevent damage or potential safety issues.

If you decide to connect VCC1 and VCC2 pins to the Li+ pin of the Particle Argon, your connections in the netlist will be as follows:

Net 0 connects U1:Li+, VBAT:P1, VBAT:P1, Rear:VCC2, Rear:VCC1, VBAT:P1, Front:VCC1, Front:VCC2

It will help to handle the current if add big aluminium electrolytic capacitor to battery pin

@copilot said Yes, adding a large aluminum electrolytic capacitor to the battery pin can help smooth out voltage fluctuations and provide a reservoir of energy for moments when the motors draw significant current. This can improve system stability, especially under dynamic load conditions.

Connect the capacitor in parallel with the battery, close to the L293D motor drivers. Ensure the capacitor's voltage rating is higher than your battery voltage. A typical value for such a capacitor would be in the range of 1000-2000 uF, depending on the size and power requirements of the motors.

Remember to connect the positive terminal of the capacitor to the battery's positive terminal (Li+ pin) and the negative terminal of the capacitor to the battery's negative terminal (GND pin).

can you suggest what value of the capacitor should I use if I will drive 4 motors with 1 Amp max current each and the voltage will be 3.7V?

For a system with four motors driving 1 Amp max current each at 3.7V, a capacitor value in the range of 1000-2200uF should suffice to help maintain stability during transient current spikes and sudden load changes. You can start by trying a 2200uF capacitor with a voltage rating higher than the battery voltage (for example, a 6.3V or higher voltage rating).

The recommended capacitor value also depends on the battery's own internal resistance, the wiring resistance, and the power demands of the rest of the system. You may need to fine-tune the capacitor value based on the actual performance of your system under various load conditions. Keep in mind that adding a large capacitor is not a substitute for a battery that can support the required current; it's meant to provide extra stability under transient conditions.

Yes, there are motors that can be soldered directly to the PCB. One example is the 304-100 motor which has mounting pins on its body. These pins are placed through holes on the PCB and soldered in place.

To connect two L293D motor driver ICs with a Particle Argon board, follow these steps:

Please refer to the datasheets and pinouts of the L293D motor driver IC and Particle Argon development board for proper connections.

To connect two L293D Motor driver SubModules with a Particle Argon board, follow these connections:

With these connections, you can control each motor's speed and direction using the enable and input pins connected to the Argon board. You may need to adjust the pin assignments based on your specific project or preferences.