I mistakenly added the wrong 2x3 header. It's not a 0.1" spacing. I've corrected it and added a few LED's that you can wire up as per the Arduino ISP sketch. look for v0.2 on the board.
***End UPDATE
Completed, write up here.
For programing tiny 85 and 84 with Arduino, read the high low tech article it'll get you there fast.
Most people I imagine start with playing with AVRs via the Arduino community. Unfortunately moving from your easy to use Arduino to a bare chip isn't easy. It requires a programmer, and those can be as little as a couple of dollars on ebay for a usbtinyisp or avrisp clone. I have a nifty Arduino with breadboard mounted on a piece of Plexiglas that is great for attiny development, especially using attiny85's since the Arduino has power, and I can use it as programmer. Most starter kits come with similar setups, so alot of people have them. It's a pain to setup, and the more wires the more chances to fail miserably. and disconnecting to rapidly test is a little painful.
For the chip side of things I've ordered a few pixie85's and pixie2313 boards. so I'll have the ICSP header broken out. Adafruit has a ICSP breadboard adapter and a 6" 2x3 idc cable... for all of 3 bucks for the set. You'll need some thing similar.
It's a bout 5 bucks for the 3 boards. Cheap enough to give away at parties.
Scouring the internet the solution to my woes seemed to hack a 6 pin IDC cable to use the arduinoISP and an ICSP connector. Sound good but still one of those what pins do I use moment. Adding to the complexity the UNO requires you to disable the auto reset for the serial. This requires a 10uf cap between reset and gnd. Way too much to remember every time.
The solution is obviously a shield. Unfortunately all the ones I've found already designed are for chip sockets. and we fairly expensive for what i wanted, a cheep, easy to setup programmer board that I could give away.
So the next installment in PCB Design is the ArduinoISP header shield. The LED's are optional, they hook up with wire from "D7-D9" on the back of the board. That gives activity, error, and heartbeat. It didn't add to the price so why not. Also it the cutout on the right so that pin 9 should be exposed.
These are being ordered next week some time. So figure at the end of september I should have them tested.
A simple square inch design that straddles the arduino. I finished the design today. for the uno you need a cap. older boards might need a 120 ohm resistor, though the cap might work too.
These are being ordered next week some time. So figure at the end of september I should have them tested.
A simple square inch design that straddles the arduino. I finished the design today. for the uno you need a cap. older boards might need a 120 ohm resistor, though the cap might work too.
It's a bout 5 bucks for the 3 boards. Cheap enough to give away at parties.
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