Model B+, GPIO pin 27 not working - Raspberry Pi Forums

hello,
have pi model b+ raspbian installed. im trying turn on relay module using gpio 21 (pin 40). doesn't working.
if use gpio 14 (pin 8) working , turning on relay module ans o other pins need gpio 21 (pin 40) connect other circle , doesn't working.
body has advice?
i'm using following python code:

code: select all

import rpi.gpio gpio import time  gpio.setmode(gpio.bcm)  # init list pin numbers  pinlist = [21]  # loop through pins , set mode , state 'low' #gpio.high - module off #gpio.low - module on in pinlist:  	gpio.setup(i, gpio.out)  	gpio.output(i, gpio.high)  sleeptimel=1; sleeptimeh=1; try: 	 	while (1): 		for in pinlist: 			gpio.output(i,gpio.high); 			time.sleep(sleeptimel); 			gpio.output(i,gpio.low); 			time.sleep(sleeptimeh); except keyboardinterrupt: 	print " quit"; 	gpio.cleanup();  gpio.cleanup(); 

does work when use different library?

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