Sorry I have updated recently; been busy.
So Day 2 I finished the rest of the power supply and that worked fine; once I fixed my mistake. At first the 12v was producing 5v and the 28v line was producing something and the chip was smoking so I quickly disconnected the power. I then realised that I soldered the inductions on wrong and the rails where shorting the joint. Rotated them 90° and both lines then worked.
Day 3 I did the tuning circuits; I used the ATmega168-20AU which has bigger memory. I didn’t need to change any code for it to work. I did the LED test and that all worked ok. It was then I realised I had missed a line on the parts list and forgot the 10k resistors. But I ordered 4 for another part so I used them and stacked 2 20k to make 5 10k resistors. I don’t have a scope but my dad does so I tested the adjustable resistors and they where ok.
I then had to wait for the VCOs to arrive. They did on day 5 but I needed the 10k resistors.
Then there was kinda a break for a few weeks because I was busy at the school production (We Will Rock You). Vid of it here: http://www.youtube.com/watch?gl=US&v=wfSUL12eMN8, I did the lighting cues and other tech stuff.
After that I ordered the spare resistors and the alternative 3.3v and 5v line components. I also wired up the battery and that works fine including the charging circuit.
So yesterday I soldered the VCOs and the PLL circuit. Installed the alternative components and they work fine. I plugged it into usb, appeared as COM12. I opened up hyper terminal and set it to receive.
I then programmed the test_uart prog. switched to the hyper terminal window and… It crashed. I killed to process unplugged the device, plugged it back in; then the problems started. It said device unrecognised. So I though it was windows being annoying so I rebooted (yes I disconnected the power). Still the error. Tried on another machine same error. So I’m assuming hardware error now. I’ve tried re-setting the chip still same error.
Unfortunately I only ordered 1. And I’ve already placed an order with digi-key for those parts so really don;t want to place another for just 1 part.
Tomorrow I’m going to re solder it on as it isn’t on straight as that was my 3rd ever smd component
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I’ll put some pics up somtime.
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