control circuit
Britannicus
Posts: 98
Can somebody help me - I've tried concocting a circuit (see diagram) and I don't see why it shouldn't work, but I'm a total duffer at this stuff and would like a second opinion before frying my BOE. This is building on an earlier "skid steer" circuit which gave me forward only - I'm now wanting to fit a reverse gear!
The idea is to connect two Motors (M1 and M2), either positive/ negative or negative/positive depending on which one of two reed relays is activated. This uses a separate 6V 1a supply from the BOE
When in forward motion mode, steering is controlled using 2 transistors each of which governs the supply to either M1 or M2 thus turning it left or right . This in turn only happens when the "forward DSDT" reed relay is on. if the other reed is on, a simpler circuit merely reverses the polarity and backs the motros up.
Will this work? or will the positions of the diodes installed to protect the circuit not now function ? the motors seem happy to function in either reverse or forward mode ?
I hope the diagram makes some sense - I've laid it out exactly as I would intend on a strip PCB board
Once again in you communal Debt
A
The idea is to connect two Motors (M1 and M2), either positive/ negative or negative/positive depending on which one of two reed relays is activated. This uses a separate 6V 1a supply from the BOE
When in forward motion mode, steering is controlled using 2 transistors each of which governs the supply to either M1 or M2 thus turning it left or right . This in turn only happens when the "forward DSDT" reed relay is on. if the other reed is on, a simpler circuit merely reverses the polarity and backs the motros up.
Will this work? or will the positions of the diodes installed to protect the circuit not now function ? the motors seem happy to function in either reverse or forward mode ?
I hope the diagram makes some sense - I've laid it out exactly as I would intend on a strip PCB board
Once again in you communal Debt
A
414 x 452 - 34K
Comments
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google is your friend.
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Also PWM (pulse width modulation)
OK so looks like I can buy a ready made IC to do the job - there seems a bewildering supply - would the SN754410 work ??