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Author Topic: Micro printer cbm1000 circuit problems  (Read 838 times)
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Im trying to get my arduino talking to a CBM1000 receipt printer for my final project.
Ive found some really helpful hacker resources and a guide here http://microprinter.pbworks.com/w/page/21489360/CBM-1000

i also followed this tutorial http://www.aggsoft.com/rs232-pinout-cable/serial-cable-connections.htm

except im using 1uF capacitors and a Max232 chip.

Ive changed the serial port so they collate from a 9 pin to a 25 pin. ( 1=8 , 6=6, 4 = 20 , 7 = 4 , 8 =5)

and then i sent roo reynolds sketch https://github.com/rooreynolds/microprinter.git although the receive light flashes it does not transmit.

can anyone help me with this?
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Is the printer broken?  Have you tested it with a PC (or something that is not an Arduino)?
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Hi, the printer runs successful test prints but the arduino does not Transmit (TX) only RX from the sample sketches.

thanks
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Ive changed the serial port so they collate from a 9 pin to a 25 pin. ( 1=8 , 6=6, 4 = 20 , 7 = 4 , 8 =5)

Did you swap 3 and 2? They're the other way round on a 9-pin from a 25-pin. Also, 9-pin ground is 5, 25-pin ground is 7.
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