I’m having a small problem with receiving SPI. this is the comms between two AVRs, identical settings for the SPI bus with the exception that one is set as a slave and one as a master. I send four bytes, 90% of the time it works perfectly and the timing looks like this, the “LED1″ [...]
It’s been an interesting couple of weeks. I built a second Zira to test the remainder of the chips I have and start sending units to beta testers. But the one I built wouldn’t work, it lit up, you could edit values, save patches, load patches but would not respond to MIDI! I checked the [...]
A few people have asked about some elements of how to build their GorF kits, so I’ve revamped the tron build guide to make a little more generic and updated the links. The new build guide can be found here and whilst it’s still about how to build a Tron the important parts (order to [...]
I’ve uploaded a stack of pictures from Synth DIY UK 2011 to the events page on synth.net. It was a great event, well attended and we raised over 180 pounds for charity! I would like to thank Neil Johnson for making all the arrangements at Cambridge and in particular Terry Shultz for the donation of [...]
I’m pleased to announce that the kits for Tron are available. The first few kits went to people on the mail-list, so there remains 15 full kits (kit 2) and a few PCB+Micro (kit 1). Kit 1, is a PCB + Programmed Micro for 21.50 GBP. Kit 2, is a Full kit, with PCB, programmed [...]
It’s time for an update for the Tron Kits. I now have all the parts, excluding 2. The memory chips haven’t arrived but are due any day, I ordered more direct from Microchip as the original supplier quoted me a delivery date sometime in December. I also only have half of the CPU chips that [...]
Well, I’ve had a few problems with this one. A few timing issues which I can fix in software, the biggest problem has been the display. The DLR1414 is incredibly noisy. So noisy you can here a high pitched whine over the sound you’re playing and also it puts so much noise on the ADC [...]
Well, I’ve got the boot loader fully working and debugged. I’ve found one last bug in the main code and have upped the version to version 1.00. I’ll be uploading the Bill of Materials, hex files and so on over the next few days. The kit pricing is coming along, I’m waiting on one final [...]
Well, part two is uploaded, so here’s the link and embedded video. I’ve thought of one extra function I’d like to include which I’ll work on over the next day or two, and then I need to test the MIDI Sysex Update, at that point the code should goto version 1.00 Tron Demo, Part II [...]
So, I’ve not been idle, I’ve managed to get some of my spare time back, and I’ve been busy. Tron is an 8 part, 16 step, drum pattern programmer. I’ve uploaded a video on YouTube, it’s the first part of two videos, I’ll upload the second in the next day or so when I get [...]