1 Wire to RS232 Serial Interface

[technofreaks]

1 Wire to Serial Interface Circuit using max3232E IC, This interface can daisy chain 1Wire device such as 18S20
Supply Voltage 5VDC, (schematic / ready PCB is available )

 

[zia]

how it may be possible plz show me circuit

 

[tpetar]

1 Wire to Serial Interface Circuit using max3232E IC, This interface can daisy chain 1Wire device such as 18S20
Supply Voltage 5VDC, (schematic / ready PCB is available )
View attachment 77383

What MAX3232? 1-Wire dont need MAX232 or MAX3232.


RS232 Active 1-Wire Adapter 9-pin 9097U





RS232 Passive 1-Wire Adapter 9-pin 9097E







USB 1-Wire Adapter 2490

 

[technofreaks]

Yes it can be done with out MAX3232, its a Level converter, instead you can use transistor / doide

2490 is USB version, I have made circuit for USB also.

 

[wizpic]

technically speaking it's not one wire am I correct in saying you still have to connect the GND as well, if so this is 2 wires

 

[technofreaks]

it reguires return path which is GND , Two wire communication (SPI) will have 3 wires so on..

 

[snail888]

A funy circuit.How about the cost?If cost up is more than one wire cost,it may be without valuable.

 

[technofreaks]

A funy circuit.How about the cost?If cost up is more than one wire cost,it may be without valuable.

fuly assembled circuit : INR Rs.700 (Around $12 USD) plus shipping

 

[snail888]

oh,it's so expensive.For RMB,it needs about 74

 

[technofreaks]

oh,it's so expensive.For RMB,it needs about 74

for 74 nos price would be $9 each plus shipping..