Adding Other Components; Measuring Current Draw - Rabbit RabbitCore RCM3100 User Manual

C-programmable module

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Distributor of Digi International: Excellent Integrated System Limited

Datasheet of 101-0533 - KIT DEV RABBIT3000/RCM3100

B.4.1 Adding Other Components

There are pads that can be used for surface-mount prototyping involving SOIC devices.

There is provision for seven 16-pin devices (six on one side, one on the other side). There

are 10 sets of pads that can be used for 3- to 6-pin SOT23 packages. There are also pads

that can be used for SMT resistors and capacitors in an 0805 SMT package. Each compo-

nent has every one of its pin pads connected to a hole in which a 30 AWG wire can be sol-

dered (standard wire wrap wire can be soldered in for point-to-point wiring on the

Prototyping Board). Because the traces are very thin, carefully determine which set of

holes is connected to which surface-mount pad.

B.4.2 Measuring Current Draw

The Prototyping Board has a current-measurement feature available on header JP1. Nor-

mally, a jumper connects pins 1–2 and pins 5–6 on header JP1, which provide jumper con-

nections for the +5 V and the +3.3 V regulated voltages respectively. You may remove a

jumper and place an ammeter across the pins instead, as shown in the example in

Figure B-5, to measure the current being drawn.

Figure B-5. Prototyping Board Current-Measurement Option

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