Name: Kevin Hawkinson
Member since: 2003-12-10 21:03:39
Last Login: 2004-01-05 02:14:54

Homepage: www.connectexpress.com/~hawkinson

Notes: I earned my Electronics merit badge in Boy Scouts about 15 years ago, with substantial help from my Dad. Anyway, I can read a schematic, solder stuff, write a basic program in Basic, C, and Java, and I just finished college-level physics. My project is to use a RC car, a TS-1000 (Z80), and some Polaroid sonars out of old cameras, to make a car that will wander around the hallways, and not hit anything (or anybody!). I have the car and the Sinclair, and my Dad's collection of old IC's from when he worked for Tektronix. I have replaced the membrane keyboard with a Mitsumi pushbutton keyboard, breadboarded a servo controller using a Z80 CTC chip, but haven't tested it yet because I haven't been able to store the assembly program. As it turns out, I don't have a tapedeck that the Sinclair likes, so I had the idea of using EEPROM to store the programs. I breaboarded a memory circuit with an 8K SRAM and an 8K EEPROM. The SRAM works great, but the EEPROM won't reliably store the data that I send to it using POKE. So now, I'm trying to figure out a little latch circuit using 74373 and 74374 to hold the data a little longer for the EEPROM. I'm not convinced this will work, but I want a hardware solution, rather than some special software subroutine that I'll have to write in assembly.

Projects

• Lead Developer on TS1000 interface card

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