# Automation:bit specifications

**URL:** <https://forums.pimoroni.com/t/automation-bit-specifications/14340>\
**Category:** BBC Micro:Bit\
**Created:** [June 23, 2020, 4:06pm UTC](https://forums.pimoroni.com/t/automation-bit-specifications/14340 "2020-06-23T16:06:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![LF-lab](https://avatars.discourse-cdn.com/v4/letter/l/da6949/32.png) [@LF-lab](https://forums.pimoroni.com/u/LF-lab)\
**Post date:** [June 23, 2020, 4:06pm UTC](https://forums.pimoroni.com/t/automation-bit-specifications/14340/1 "2020-06-23T16:06:00Z")

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hello,

I bought an automation:bit with the intent to control motors with it (pumps). Couldn’t find anywhere how much current the outputs are allowed to sink.  
Now, from another thread I found that you are using ULN2003? In that case 500mA per output is allowed?  
I get that these things are not aimed at engineers, but a somewhat more comprehensible datasheet is called for, imho.

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**Author:** ![Shoe](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Shoe](https://forums.pimoroni.com/u/Shoe)\
**Post date:** [June 23, 2020, 9:59pm UTC](https://forums.pimoroni.com/t/automation-bit-specifications/14340/2 "2020-06-23T21:59:00Z")

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Unfortunately the Pimoroni folks are a little scarce on this forum, you might get a faster response tweeting at them or possibly by using the [contact form](https://shop.pimoroni.com/pages/contact-us). It does indeed seem to say ULN2003A on the chip, so if the datasheet for that says 500mA then it sound slike a safe bet.