Memorial day is 05/25/2015 – Orders will ship out on May 26th. There will not be any deliveries or shipping on Monday. Any order placed after 11am ET on Friday May 22nd will not start to ship out until Tuesday May 26th.

Need help with Ladyada Sim Reader
Moderators: adafruit_support_bill, adafruit

Need help with Ladyada Sim Reader

by zeeekay on Sat Aug 28, 2010 3:34 pm

Hi... I found the Sim Reader at So following the schematic, I designed PCB and fabricated it to end..
Now the problem is that when I connect Sim reader with Com Port, I get Error:

Traceback (most recent call last):
File "", line 267, in buttonConnectReader
File "pySIMserial.pyc", line 111, in connectReader
File "pySIMserial.pyc", line 160, in openSession
TypeError: ord() expected a character, but string of length 0 found

I am using 74LS04 (Low power Schotkey) not Gate IC.. The crystal is 3.57945 MHz.. I have cross checked connections time and again but it did'nt work.. Please help...
Posts: 2
Joined: Mon Feb 01, 2010 4:32 am

Re: Need help with Ladyada Sim Reader

by tatsumaki on Thu Feb 10, 2011 7:16 pm

i am having the same errors to0... i resoldered my pcb. and re build the device again for 3 time but im still recieving the same errors... pls help us..... i need to make this work badly. XD
Posts: 3
Joined: Thu Feb 10, 2011 7:13 pm

Re: Need help with Ladyada Sim Reader

by adafruit on Thu Feb 10, 2011 7:20 pm

we can only offer help and support to kit customers, did you buy the kit from us?

Posts: 11904
Joined: Thu Apr 06, 2006 4:21 pm
Location: nyc

Re: Need help with Ladyada Sim Reader

by Kirill on Thu Sep 13, 2012 4:32 pm

I have the same problem and I did buy a kit. Then I soldered it in a pub. Does that count?
Posts: 15
Joined: Fri Sep 07, 2012 7:12 am