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The hardware required consists of a number of small boards (built on Veroboard), which # \2 h" A4 _/ L5 x
connect together via ten pin leads using Molex connectors. The first board (Main Board) carries
" |4 U$ s$ {0 ?& gthe PIC16F628 processor and 5V regulator - the board can be fed from a simple 9V battery.
+ s; S# {. ~; @+ f% w) Y3 LSome of the later tutorials will require two processor boards, this is the reason for the second # ]- `* c6 u' ?* e" c* s: j
connector on PortB - the two processors will communicate with each other over a standard 9600
: m9 q! A9 p6 @9 H% \6 c/ x: Lbaud serial bus, the second board can be either powered from the first (using a four wire
. u/ x/ G8 C$ s4 c" ]* M( w8 }connection lead), or powered from it's own supply (using a three wire connection lead). The lead
* `, P0 H7 X+ z. ]2 z+ Jconsists of a ground wire, RB1 to RB2, RB2 to RB1, and an optional 5V wire. RB1 and RB2
4 q9 G5 [) c8 W% V0 tcross over so we can experiment with the built-in hardware USART as well as software serial " A; }& x) L' W# {
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发表于 2016-11-2 14:13
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淘帖
支持！
反对！
