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Small buck/boost
I'm looking to get 4V at 30mA output from a single LiPo cell, say 3V up to 4V2. I tried the TI simple switcher site, but it was giving me crazy 2A output circuits. Anyone have any...
Tuesday, 21 May 2013 - 15:54
Addressable RGB LEDs
Just ordered 10 of these(as if I don't have enough distractions - thanks a lot, Elektor!). Anyone else played with anything similar? http://www.elektor.com/news/control-1024-rgb-...
Friday, 3 May 2013 - 09:06
Tiny10 lock bits errata
I have just been reading the ATTiny10 datasheet. In the errata it states: Quote:1. Programming Lock Bits Programming Lock Bits to a lock mode equal or lower than the current...
Thursday, 2 May 2013 - 11:10
Zigbee versus BT 4.0 (LE)
Looking at a possible "cable replacement" project, and from a quick look round the web, it would seem that BT 4.0 is cheaper han Zigbee, even though Zigbee is designed to be...
Friday, 26 April 2013 - 11:49
What resistor values to allow TPI programming in circuit?
I have just searched the ATTiny4/5/9/10 datasheet, AVR918 and AVR042 in vain to try to get a feel for what value of resistor I should use to allow the reliable use of the TPI on a...
Monday, 22 April 2013 - 12:58
Reset conundrum
I have a product, and I would like to have a way for the user to do a hard reset as a last resort. The device is permanently powered, and spends most of its life in power down...
Thursday, 28 March 2013 - 14:43
ATTiny44A reading bandgap with Vcc as ref
When reading the 1V1 bandgap using Vcc as vref, I find that I need to add a fairly long delay after setting the MUX register for internal 1V1 bandgap. I have come across this...
Thursday, 28 February 2013 - 19:31
Driving small high voltage inverter module.
I have a small high voltage inverter module (produces a few KV). I have no info, apart from the fact that it draws 25mA at 4V. The whole thing is potted, and has nothing written...
Wednesday, 6 February 2013 - 09:32
XMega32D4 breakout PCB
Anyone know of anywhere that sells an XMega32D4 breakout PCB for prototyping? I guess a 64 or 128 would do. John
Tuesday, 22 January 2013 - 17:51
XMega Counter/Timer feature lost.
Just looking at the XMega datasheets, with a view to using an Xmega32 in a new project. I was initially excited because the I/O ports can be programmed to act as open drain, with...
Saturday, 19 January 2013 - 16:54
Copper pour advice.
I'm finishing up a double sided PCB, is it a good idea to copper pour both sides and connect one to GND and one to Vcc, or is there a better option? All advice gratefully received...
Wednesday, 16 January 2013 - 15:06
reti in vector table?
I have three ISRs which do nothing, but, as far as I know, they need to be there, as the repective interrupts are all used as sleep wake ups. Left to its own devices, GCC will add...
Wednesday, 16 January 2013 - 09:14