Arduino ISP - LOG
So this Lazy Old Geek (LOG) has had a lot of trouble getting Arduino bootload on Atmega chips.
I couldn’t get either of these to work with Arduino UNO Rev3.
So I developed a couple that worked for me:
Problem: Well, my second Instructable works good for Atmega328s in a socket, but I have a Seeeduino that uses a SMD Atmega. So I can’t bootload it with my ICPs. See picture.
Solution: What many people may not realize is most of these Arduino In Circuit programmers use the same pins that are on the ICSP connector or sometimes called ISP.
ICSP: In-Circuit Serial Programming
Basically, this is a way of programming a microcontroller PCB through a connector.
ISP: In System Programming
Basically, the same thing. I don’t know the difference. They seem to be used interchangeably.

Step 1: ISP Cable

So I took my UNO ICP schematic and converted it to ICSP connectors. This makes it easier to hook up, then connecting six jumpers to various header pins on the Arduinos. See schematic
Construction: There’s a couple of ways to do this. You could take 2 2x6 female headers and solder wires or you can take six female-female adapter jumpers like these.
I used the second method.
Two Arduinos with ICSP/ISP connectors
6 f-f adapters
1 m-m adapter
Identifying pin 1 on ICSP/ISP connectors. These connectors are 2x3 male headers. See picture. Sometimes pin 1 is identified by a dot or a 1 or if you turn the Arduino over, pin 1 is square instead of round pad.
What I like to do is make sure by using a DMM and check which pin is connected to ground. This is pin 6 of the connector and pin 1 is the opposite. See pinout drawing.
For future reference, I mark pin 1 with red nail polish.
Now you have pin 1 identified on the two Arduinos. Identify one as the source Arduino. Source is the Arduino used to bootload the other Arduino, the Target.
Take one of the f-f adaptors and connect 1 to 1 on the two Arduino ICSP/ISP connectors.
Take another and connect 2-2, 3-3, 4-4 and 6-6
Take another f-f and connect one end to pin 5 on the Target Arduino.
   On the other end, connect the m-m adapter, plug the other end into D10  female header of the Source.
See picture and schematic.
Then I wrapped both connectors with transparent tape to keep them bundled in order.
And I marked each Pin 1 with red nail polish. See picture.
<p>The other method, is wiring the source device, as instructed in the ArduinoISP example (File/Examples/ArduinoISP), from 10 (CS/Reset) 11 (MISO), 12 (MOSI), and 13 (SCK/CLK). and running Pins 2 to 2 (+5V) and 6 to 6 (GND) between the two. I accidentally corrupted the bootloader on a mega2560, and using tips from several instructables here, as well on arduino.cc, and managed to get a working bootloader back into the Mega.. </p>

About This Instructable




Bio: Lazy Old Geek
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