On Fri, Oct 2, 2015 at 5:11 PM, Daniel Thompson firstname.lastname@example.org wrote:
On 02/10/15 10:49, Grant Likely wrote:
Based on #3 I cracked open by programmer and short circuited R7 (i.e. bypassing the programmer boards current limit on SCK). With this modification I was successfully able to program the sensors board.
Any chance of a transistor switched LED circuit for SCK in v2? ;-) It would be good to be compatible with this fairly popular programmer.
Great work! Thanks for the debugging. Yes, I'll either put in a transistor, or remove the LED entirely.
Well. From my perspective having a Blink example work out of the box is a pretty good feature. It makes getting started feel pretty effortless.
Oops, I was looking at the reset LED. I just looked at the schematic for the Arduino UNO, and it has exactly the same circuit, but it uses a 1k resistor on the LED (same as your test board). It should be as simple as changing the R to 1k on the next board. I'll get some 1k resistors delivered and give it a try.
It seems I need to order myself a USBTinyISP. :-)