Post Created date
Membrane keyboards?
If it's just for a one-off, look at re-purposing the panel off a dead piece of test equipment from your local junk-shop/tip. Some of them come in nice re-usable boxes too! Bin-...
Monday, 11 January 2010 - 12:12
AVR TWI/I2C Interfacing
I2C length depends on the capacitance of the cable - I don't have the specs to hand but the buffer chips got round that problem for me.
Wednesday, 19 August 2009 - 11:57
To socket or not ....
I've had a state machine using din-rail mounted, socketed relays controlling lights in a theatre running for about 25 years. 240V AC coils and they all control each other. The...
Sunday, 26 April 2009 - 13:29
Old Dog, New Tricks: 555 Timer in the trash
When I was writing "trusted" firmware, it had to be "fail-safe". That usually involved multiple hardware components checking each other. The important thing was that a single...
Wednesday, 15 April 2009 - 11:00
Serial interface loses sync
Quote:changing the transmitter to two stop bits. If you don't have gaps between your characters, it's the same as isochronous and the start bit detection doesn't always work. The...
Monday, 2 March 2009 - 09:19
Connecting plastic membrane to pc board
If the stripes on the flex cable match the tracks on your PCB, it is possible to use the zebra conductive rubber out of a damaged LCD (between the glass and the PCB)with a clamp...
Monday, 2 March 2009 - 05:25
1-wire interfacing to a IR thermometer
AVR307: Half Duplex UART Using the USI Module :: AVR Freaks
Monday, 16 February 2009 - 05:58
1-wire interfacing to a IR thermometer
Quote:Communication: Asynchronous serial @ 2400, 4800, 9600, 19.2K, 38.4K baud on single I/O pin Look at some of the application notes for the USI if you want to go the 'Software...
Monday, 16 February 2009 - 05:50
Wireless Communication Problem
Cell Network in Australia is very patchy. Telstra say they cover 99+% of the Australian population (not the country!)
Monday, 16 February 2009 - 05:35
Stepper motor driver question
How have you connected them?
Monday, 16 February 2009 - 02:02
IR led carrier wave
AVR based generic infrared transceiver might be worth a look at. [edit] the actual project is at http://www....
Monday, 9 February 2009 - 09:42
im a complete idiot. Help me!
I'm not a complete idiot ... after my last spell in hospital, parts of me are missing
Wednesday, 10 September 2008 - 12:36