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- Newsgroups: sci.electronics
- Path: sparky!uunet!spool.mu.edu!sol.ctr.columbia.edu!eff!world!jonas
- From: jonas@world.std.com (Jonas R Klein)
- Subject: Motor controller help wanted
- Message-ID: <BxD4uC.HwC@world.std.com>
- Organization: The World Public Access UNIX, Brookline, MA
- References: <kwRVTB1w165w@halcyon.com>
- Date: Sat, 7 Nov 1992 20:27:48 GMT
- Lines: 37
-
- I need to control 18 motors from a computer. What's the easiest
- way to do this? right now I'm planning to use four transistors for
- each motor:
-
- +5V-----------------------
- |c |
- ---- b |/ \|
- LS |------| NPN |---- LSTTL
- TTL | |\e
- ---- | |
- |___Motor___|
- |c |
- ---- b |/ \|
- LS |--vv--| NPN |-vv-- LSTTL
- TTL | |\e /|
- ---- | |
- ___|___________|___GND
-
-
- The motors are small, and I'm using 2n2222 style transistors form Radio
- Shack, since they're cheap and easy to get, but I still need 72 of them
- and a lot of wire. Can I do this more easilly from a bipolar supply?
- How does everyone alse do it? I haven't beena able to find many circuits
- that do this.
-
- Thanks,
- +Jonas Klein
- jonas@world.std.com
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