Recommended Project 4 - Miniature Real-time Controller

• The circuit uses only three chips, a 89C2051, DS275(or MAX232), and 74LS07 open collector driver.
• The scheduler for time on/off of 6-channel output can be made by downloading from PC and saved into onchip RAM.
• Each output provides a 20mA sinking suitable for driving a homemade opto-triac or big solid-state relay for heavy load.

Details can be found HERE

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