Archive

Posts Tagged ‘Electronics’

We have communication

August 3rd, 2009 1 comment

As I went to solder a new chip on I just ran my iron across the joints to check they were all joined. I then plugged it in and…

It worked. Getting info from the chip:

Connection

Connection

Gonna load up the standard program next to see if I can get some output.

Wave Bubble Update

July 21st, 2009 No comments

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 :D .

I’ll put some pics up somtime.

Parts are here

June 22nd, 2009 No comments

Parts are here ^^.
Had to pay £22 VAT on the door but I think that is wrong as one was £7.5 which is what I expected as that is 15% of £50 but one was £14 but that was quoted in USD so maybe they got it wrong; or there were some other fees.

Just checked it is all there; I’ll post up some pics after lunch.

Edit: Pics

Camera Joiner

May 22nd, 2009 No comments

Found the pics or something I was meant to post. This powers and removes the video from some cameras.

Categories: Electronics Tags: , ,

USBtinyISP AVR Programmer

May 11th, 2009 No comments

I needed an AVR programmer for the wavebubble and that seems the only one I couldn’t get hold of. So I bought a kit off of http://www.adafruit.com/.

Information pages: http://www.ladyada.net/make/usbtinyisp/

Here’s some pics: