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In a proposed project for an intelligent battery charger/ discharger, I require a menu and number input. To avoid the extra expense and space required by a keypad I wrote the code below, which requires the 2x16 LCD module connected to an output pin – to one of the Darlington outputs here – and...

I plan to store data in a 24LC64 from a 28X1 PICAXE mounted in a 28 pin project board. The EEPROM data and clock lines require pull-up resistors. These lines are connected to the PICAXE input pins 3 and 4, which have pull-down resistors, in a resistor array. I read that the pull-down resistors...