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Driver Shield

Price
$40.00 USD   
Shipping calculated at checkout.
  • 96 In stock
About

The Driver Shield gives your OpenMV Cam the ability to drive two 3A motors or four 1.5A independent channels at 6-36V. Yes, you read that right. This shield can drive 12V or 24V motors or solenoids/relays. P7/P8 is used for PWM control of the two motor channels, while P0 and P2 control the direction (or P1 if you change a solder bridge onboard). When the motor controllers are set to independent mode by changing a solder bridge P0/P2/P7/P8/(P1), control each channel as a high-power digital output. Finally, you can disconnect any pins you don't need from your OpenMV Cam.

Better yet! The shield features a wide voltage range 6-36V input, which is robust to reverse voltage and features robust transient surge protection. Use this input to power your OpenMV Cam from 12/24V power supplies without having to worry about damaging your camera. The wide range voltage supply outputs 5.4V on VIN via an OR'ing diode so that you can power your OpenMV Cam from multiple shields with OR'ing diodes (e.g. all of our dual header column shields).

The shield also features a robust 0-5V ADC input (AIN) that outputs 0-3.3V to your OpenMV Cam on P6. The input is robust to reverse voltage and features overvoltage protection (tested up to +/-36V). By shorting a solder bridge jumper on the board, which supplies a 240 ohm load on the input, you can work in 4-20mA mode. If you don't need the ADC input, you can disconnect it from P6, too.

Finally, the shield features a robust 0-5V digital input/output. The SYN pin is tolerant to reverse voltage (tested with -12V), shorting to ground, and shorting to 12V. By default, SYN acts as a digital input driving P10 in Open-Drain Mode so that you can support input triggering from multiple sources, all driving P10. Alternatively, you can switch SYN to be a digital output driving 0-5V for triggering devices from your OpenMV Cam instead of being triggered by them. So, whatever your use case is for triggering, the shield accommodates. If you don't need the trigger input/output, you can disconnect it from P10, too.

This shield is compatible with all OpenMV Cam models.

Applications

The Driver Shield is perfect for building a robot using your OpenMV Cam. You can directly power two motors from it and get power directly from 7.4V LiPO batteries. The shield also works great for driving relays in industrial applications that control high power loads.

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Shield Design

Pinout

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