This is an old revision of the document!
There are currently no etched boards or etching layouts available. But here's a detailed plan for a breadboard. Soldering that shouldn't take longer than soldering a premade one.
Download the PDF plan from below to get started, it contains also a list of needed parts. If you have FreeHand, you should definitely also download the source, because you can switch the visibility of layers. However, the PDF contains multiple views of the Breadboard Construction, so it should be easy to rebuild.
The RS232 Section is optional.
Never connect RS232 signals from your PC directly to the SpeakJet!
Because RS232 is operated with 12V and the SpeakJet just deals with 5V, you will likely damage it!
To turn the SpeakJet IIC Module into a fully operateable synthesizer, you need this:
You need to download the plan (it also contains a list of needed parts!):
|IC3||MAX 232||MAX 232 EEPE||1||700-MAX232EEPE|
The current board version v1.3 has a lot less backside cabling, is easier to solder, parts have all convenient sizes and the board dimensions are landscape; similar to the MBHP-DIN/DOUT PCBs.
Don't cut the legs at once, use them to build the paths at the bottom!I tried to make the board as small as possible, but there should be enough space to add additional pins if necessary.
You'll need the MBHP-Burner and build an adaptor from 40pin to 18pin:
Set the burner to 13.1 V (for PIC16; if you're burning PIC18 use 12.5 V) I've heard that Mike is burning the PIC16 chips, maybe SmashTV will also do this service. Just ask in the forum!
I strongly recommend the firmware version 1.2 ! If not already available in the current download package you will find a pre-release hex-file in the speakJet forum topic (UserProjects)