73 reputation
6
bio website
location Cambridge, MA
age
visits member for 1 year, 2 months
seen Sep 10 '12 at 20:49
stats profile views 15

Studied computer science and psychology, work on robots in the 1980s. Amateur radio operator, interested in building a microcoded CPU as a hobby.

Frequently seen around Apple ][ hardware.


Sep
10
comment When an LED has a “light degredation” specification, does that means it's an OLED?
Thanks! I'll try limiting my purchases to those "top 6ish" suppliers.
Sep
10
awarded  Editor
Sep
10
revised I'm looking for a low-parts-count Arduino <-> phone & POTS line interface
found some additional solutions
Aug
3
comment Need details on 35-year old Unisonic VFD (from a calculator)
Photos: mycalcdb.free.fr/main.php?l=0&id=2688 Tony, unfortunately it isn't, it's a single cylindrical tube with about 10-15 wires coming out of one side: The Unisonic 790R (not to be confused with the 790RM, which has a different display) seems very close in design, based on the photos.
Jun
26
asked Need details on 35-year old Unisonic VFD (from a calculator)
May
30
awarded  Supporter
Apr
16
asked I'm looking for a low-parts-count Arduino <-> phone & POTS line interface
Apr
14
answered Using a telephone cable to power up a light blub
Apr
9
awarded  Teacher
Mar
30
awarded  Scholar
Mar
30
accepted When an LED has a “light degredation” specification, does that means it's an OLED?
Mar
30
awarded  Student
Mar
30
asked When an LED has a “light degredation” specification, does that means it's an OLED?
Mar
28
answered How to build a custom laptop computer with original chassis, keyboard, etc?
Mar
28
comment Need recommendations: low-cost ATMega (Arduino/Teensy) solution for keyboard converter
Was I disagreeing? I thanked Olin for his well-founded recommendation, and point out that the 4.30 cost I found for the 18F2550 online is well under the $5 price target (it includes the USB functionality that requires an extra chip on the Atmel chip used in the Arduino). I only plan to make 10 prototypes, but want to be prepared if 1000 people want one (For the record, I did join the November Beard Club at work, but Boston was so hot this winter I shaved it by February).
Mar
26
awarded  Analytical
Mar
26
comment Need recommendations: low-cost ATMega (Arduino/Teensy) solution for keyboard converter
Thanks @OlinLathrop for the tip about the PIC 18F2550. I agree that the cost of a PIC programmer will be "lost in the noise", though the component cost will still be important. The initial firmware will be leveraging existing Teensy code that already does AppleDestopBus to USB, though I want to later be able to later go the other way (plug a USB keyboard into an ADB Mac) - this favors something like the MAX3421E as an additional chip later on. Thanks!
Mar
26
asked Need recommendations: low-cost ATMega (Arduino/Teensy) solution for keyboard converter
Mar
26
answered Cheapest way to wirelessly synchronize two MCUs