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Step 5Main Board
I recommend placing all your components in as a test fit before soldering anything.
Your board will likely be different depending on what resistors you could find.
The important part is the red LED, this is surface mounted onto the copper side. The -ive side is on the right, on my board the right hand track is going to ground (when looking at board copper side up). Make sure to put a fair bit of solder on this (i push on the red LED when removing the main board from the lighter)
Also remember that where ever the Picaxe chip is placed you must interrupt the copper tracks in between the legs. (you can do this with a drill bit, file or knife. But be careful not to slip and break other tracks.
When soldering the piezo, keep the wires somewhere between 5 - 10cm. This way you will be able to epoxy the piezo in place before you put the main board in, and the wires won't get in the way once it is all assembled.
The illustration shows an ideal configuration (if you had all the right resistors) but I've combined several to get the values I needed.
I haven't included a download circuit in here so make sure you are happy with the program and that the chip is working before you solder it in place.
Your board will likely be different depending on what resistors you could find.
The important part is the red LED, this is surface mounted onto the copper side. The -ive side is on the right, on my board the right hand track is going to ground (when looking at board copper side up). Make sure to put a fair bit of solder on this (i push on the red LED when removing the main board from the lighter)
Also remember that where ever the Picaxe chip is placed you must interrupt the copper tracks in between the legs. (you can do this with a drill bit, file or knife. But be careful not to slip and break other tracks.
When soldering the piezo, keep the wires somewhere between 5 - 10cm. This way you will be able to epoxy the piezo in place before you put the main board in, and the wires won't get in the way once it is all assembled.
The illustration shows an ideal configuration (if you had all the right resistors) but I've combined several to get the values I needed.
I haven't included a download circuit in here so make sure you are happy with the program and that the chip is working before you solder it in place.
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