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Pins if supplying power, but not necessary for voltage dividers feeding chip inputs don't do manual connection to GND if you want to socket the timing capacitors. ** Use only four (4) potentiometers, either 9 mm or so taller than the total height of the board, adding an extra cross-board wire that shouldn't be so hard. - In general, try to avoid multiple triggers on each Could replace step IDs with a 7-segment display with LED backlight 240x128 LCD display 320x340 RS-232 I2C or SPI 3 Line 12 character wide alpha numeric LCD LCD-graphical display with LED backlight 128x64 RS-232 I2C or SPI http://www.lcd-module.com/fileadmin/eng/pdf/doma/dogs104e.pdf LCD 4x10 character 3.3V VDD I2C or SPI 3 Line 12 character wide alpha numeric LCD LCD-graphical display with LED backlight TFT graphical display 480x272 16-bit colour with LED backlight http://www.lcd-module.com/fileadmin/eng/pdf/grafik/ediptft43-ae.pdf TFT-graphic display 320x240 16 bit colour TFT-graphical display 800x480 16-bit colours http://www.lcd-module.com/fileadmin/eng/pdf/grafik/ediptft70-ae.pdf.

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