Thanks for the encouragement. It worked. Used a vice to hold the module at 45=B0 tilt toward me, pre-bent the tinned wirewrap wire to catch on the pin, and applied heat. Credit also to Benoit Dumas who made a close-up photograph: http://www.bntdumas.com/wp-content/uploads/2015/07/small_DSC04194.JPG.jpg http://www.bntdumas.com/2015/07/23/how-to-battery-powered-temperature-and-h= umidity-sensors/ Wish I had a microscope. ;-) I used a loupe and reading glasses combined. As I had found already, it's a strange way to sleep ... the device resets at the end of the sleep period, with no preserved state apart from what might have been written to flash. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .