Elektor Team
About the article

Propeller Prototyping Board for BoeBot

Propeller Prototyping Board for BoeBot

The Propeller chip made by Parallax Inc. is a bit of a strange animal in the world of microcontrollers. This IC consists of eight 32-bit processor cores that are given access one by one to the peripherals and processor memory. This makes the Propeller extremely fast and it can work without the use of an interrupt mechanism: tasks that used to require an interrupt routine can now be run in their own processor core (called a 'COG' in Propeller-speak).

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Component list


R1 = 270W

R2 = 10kΩ



C1,C2 = 10mF 16V radial

C3,C4,C5 = 100nF



IC1 = LM2937ES-5.0

IC2 = LM2937ES-3.3

IC3 = 24LC256

IC4 = Propeller chip P8X32A-D40 (Parallax)



X1 = 5MHz quartz crystal

K2 = 5-way SIL pinheader

K3 = 4-way SIL pinheader

S1 = on/off switch

S2 = 1 make contact

4 pcs 3-way SIL pinheader

PCB, order code 070275-1

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