05/16/2015 at 22:32 •
More PCBs and component kits are now available on eBay and to purchase directly through PayPal. Visit my website for the links: http://www.danselectronic.systems/projects/avr-basic-computer-v0-1/
I currently have 10 kits available and 15 PCBs.
12/06/2014 at 20:25 •
The design of this computer has been updated and I have PCBs available for sale through eBay (using the link on the left - "Purchase PCBs"); the direct link: http://www.ebay.co.uk/itm/121510974344
A new page dedicated to this new computer design has been created: https://hackaday.io/project/3537-avr-basic-computer-v01
This design includes an additional EEPROM IC to allow full size BASIC programs to be saved. The PCBs are white in colour with ENIG finish.
11/26/2014 at 20:01 •
I received the new boards at the end of last week (one of them can be seen in the image - white PCB with ENIG finish and black silkscreen) and will be assembling one of them this weekend (the plan was to do it today but I haven't received all of the components yet). The remaining boards will be put on eBay once I have assembled one.
As mentioned in the previous log post, this board is a new design which adds an additional IC (an EEPROM IC) to the single chip computer which allows full size programs to be saved.
Update (28/11/14): I still haven't yet received the two capacitors for the voltage regulator (C1 and C2 in the picture) but I will be assembling the rest of the board this weekend. Once I receive the capacitors and test the board, the remaining boards will be put up on eBay. Hopefully they will come on Monday so I can have the board completed the same day.
11/10/2014 at 00:09 •
I have taken the design of this computer one step further and added an SPI EEPROM IC on-board allowing full size (over 7KB) BASIC programs to be saved. The following image shows the prototype PCB of this new design:
This PCB was created using the PCB Train 1 day turnaround prototype manufacture service to ensure the new design works (not shown on the above PCB is a power LED which was added after this PCB was ordered). As can be seen from the following image, the new design works correctly so I will be ordering a batch of PCBs and will be putting them on eBay.
A BASIC program was actually already stored in the EEPROM IC (as I took the IC from the red EEPROM cards shown in the details section of this page) and was loaded upon booting the computer showing EEPROM access works correctly.
I will be ordering the batch of PCBs now (they will be white in colour with ENIG finish) and will post when they have arrived. Also, the name of the computer has been changed from "Single Chip Computer" to "AVR BASIC Computer V0.1" due to addition of another IC.