esquire magazine e-paper circuit-boardU1 http://flickr.com/photos/just_mike/2831424795/in/set-72157607133868125/ U2 http://flickr.com/photos/just_mike/2832260796/in/set-72157607133868125/ U3 http://flickr.com/photos/just_mike/2831424761/in/set-72157607133868125/ shorting these contacts pauses the cycling of the displays while the contacts are shorted. on release, the displays reset to initial conditions and start the cycle over. 
esquire magazine e-paper cover October 2008.
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______________________________________ xxv has some more info and an oscilloscope image tracing the signal for one of the sections of the display. also see his esquire e-ink web-page. ______________________________________ here's more info from a comment by maushammer about the makezine article Esquire E-Ink cover hacking? - take apart photos and more...: ISP Pinout: Pin 1: VDD Pin 2: GND Pin 3: VPP Pin 4: pin 6 (ICSPCLK) Pin 5: pin 7 (ICSPDAT) PIC 12F629 Pin 1: VDD [3 volts] Pin 2: not used Pin 3: not used Pin 4: VPP/MCLR and S1 Pin 5: goes to R5/Q3/R6 Pin 6: goes to R3/Q2/R4 Pin 7: goes to R1/Q1/R2 Pin 8: GND S1 (the unpopulated switch) is connected to pin 4, which is a reset pin... but it can also be programmed as an input. It acts like a reset, though. [pauses while shorted; resets when released. --just mike] Battery 6 powers the microcontroller only. (3 volts) Batteries 1-5 generate 14.86 volts - available at C3 ... I wonder which power supply will run out -- battery 6, or batteries 1-5. Q1-3, R1-6 convert 0-3 volts from the CPU to 0-15 volts for the high-voltage drivers (U2 & U3). U2 & U3: HEF4094BT - 8 stage shift-and-store bus register datasheet Pin 3 is the clock - 30 Hz - it's slow because the Q1-3 voltage translator is slow. Pin 2 is the data - varies depending which segments need to be lit Pin 1 is the strobe - 2.7 Hz - allows all the outputs to switch simultaneously. Comments
xxv
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Finding location...
xxv
says:
At least on my board, shorting S1 seems to be a reset. It starts over, first flashing all white, all black, turning on a few of the segments, all white, all black then starting from the top of the animation.
Posted 16 months ago. ( permalink )