Recent content by springer

how can i multiplex the serial out's from 4*8M's to display in turn on a serial lcd display. The Problem... I've got 4 * PC type fans, each a different size and airflow. all are 3 wire (power and tacho). I want to use differing sizes of fans to understand the ratio of airflow to noise to speed...

can someone please point me to a general guide for interfacing 'abnormal' inputs to pic's, as most of the online docs i've found only deal with digital or outputs. my specific problem is that i have a 3 wire 12v dc fan, with a tacho. the tacho, according to my dmm is a +ve 8v pulse at a...

sorting through my 'box of bits' i came across a raw lcd display, essentially it's a piece of glass with 40 legs. After much googling i came across some info on lcd displays, but nothing on driver circuits for them. After experimenting I assume I've found the common pins, (1&40) and if i hold a...

what PIC output circuit would i need to drive a 12v florescent display? I've acquired an old but working 20 * 2 florescent display from an old POS till. its a 12v serial device that powers up and display's its welcome message etc... I've fried one 18x already connecting this to the display...

Anyone done any work with interfacing a picaxe to the i2c chip on a pc motherboard? (also... a search for i2c produced 0 results...odd!)

Bcd and the pic 8 Maybe I’ve misunderstood the pin-out on the pic 8, but I find the naming very confusing. I simply wanted to connect a bcd dot segment 0-F led to a pic 8 and have it count from 0 to F as a test According to the pin-out diagrams, pin 3 is only an input, however it is...