Post Created date
Mega48 code protection
Insufficient paranoia :)
Wednesday, 24 October 2007 - 03:35
Some trouble with tiny2313 250kbps at 20MHZ USART
Check the clock fuses (and the clock divider fuse - CKDIV8 - that one's caught me a few times)
Tuesday, 16 October 2007 - 02:11
Mounting Crystals on PCB
We use an insulating washer under HC49 crystals soldered tight to the board (upright). If they are laid flat then there will be a ground plain pad or a 'keep-out' zone under them...
Friday, 12 October 2007 - 04:52
AVR PicoPower Workshop and STK600 Coupon
Will Atmel ever run these workshops in Oz? Perhaps because we're in the southern hemisphere things are reversed and they should give freebies to Freaks who weren't at the...
Friday, 12 October 2007 - 04:37
One resistor to bind them all to one?
Quote: this may sound a stupid suggestion, but why use TTL devices (74LS) anymore? I do it because I have tubes of the things salvaged from old (socketed) motherboards - and I...
Monday, 8 October 2007 - 07:18
What do you use EEPROM for?
Calibration info - so you can re-calibrate if one of the external bits has to change.
Thursday, 2 August 2007 - 04:21
Custom chars on 4x40.
If you re-define the custom characters, the ones already on the display will change. I think that's what's happening, not that you're overwriting them. Try writing them in...
Monday, 30 July 2007 - 09:17
Simple question about PCM2705
PCM2900 doesn't have the S/PDIF and the HID pins are much simpler to ignore
Friday, 27 July 2007 - 08:23
USB Oscilloscope
To optoisolate analogue signals, you need the type that has one led and two optodiodes in the package so that you use the second diode as feedback to remove the non-linearity of...
Thursday, 12 July 2007 - 02:05
extra EEPROM and µC - Communication over normal Ports?
I2C uses 'in-band' addressing (the chip select address is in the data) SPI uses external chip selects. Either way, you can use more than one device on the same pins (2 for I2C/TWI...
Wednesday, 27 June 2007 - 07:31
Capacitor for a 11.0592 MHz crystal (external clock)?
When prototyping on matrix/vero board or solderless breadboard, I never put caps on the xtal as there is usually enough stray capacitance about. In the absence of an app note, I...
Wednesday, 27 June 2007 - 07:21
Socket adapter
Quote:But it's not just the row-to-row distance that is wrong, the pins are also too close together -- 0.05 instead of .1 inch. then you need 4 plugs and remove alternate pins as...
Wednesday, 13 June 2007 - 02:24