Parallax 28988 Manual Download

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screwdriver may make this step easier). After the pack is secured to the standoffs, tighten the

(3) nuts that hold the standoffs to the chassis.

Figure 5 – Pack Installation

Step 11.

Re-install the servo screws that were removed in Step 5, but attach them in reverse (screw-

heads facing inward as in Step 6). Now all (4) servo screws closest to the Li-ion pack should be

installed with screw-heads facing inward, and the nuts attached on the outside of the chassis

(see Figure 5 (b)).

Step 12.

Re-attach the drive wheels and tail wheel ball.

Step 13.

Carefully remove the cells from their packaging. Note the positive cell polarity. Various brands

of cells are marked differently. The positive terminal may be indicated by a ringed indentation

(a)

(b)

Li-ion Small Robot Power Pack-Charger (#28988)

v1.2 3/3/2015 Page 7 of 10

Summary of Contents for 28988

Page 1: ...ation depending on cell capacity Rechargeable Li ion cells don t need to be removed from your robot for recharging charging circuitry is built into the board Charge with a 7 5 VDC 2 1 mm center positi...

Page 2: ...all Phillips screwdriver Needle nose pliers Multi meter VOM Assembly Instructions CAUTION Do not install the Li ion cells until you reach the appropriate step Step 1 If installing on a Boe Bot robot s...

Page 3: ...the chassis then disconnect your control board Leave in place the 4 standoffs your board was mounted on Figure 1 Figure 1 Remove Control Board Step 4 Remove the two drive wheels and the tail wheel bal...

Page 4: ...Pack a b Remove the 4 cell battery pack by loosening these two screws Remove the 5 cell battery pack by loosening these two screws Copyright Parallax Inc Li ion Small Robot Power Pack Charger 28988 v1...

Page 5: ...the outside Note If your robot uses encoders it may be easier to remove them in order to perform this step though it should not be required If you remove them don t forget to re attach them before con...

Page 6: ...rt the Li ion Power Pack at a slight angle into the chassis as shown Figure 5 a Insert the board so as not to crimp the servo cables Use 3 4 40 x pan head screws to attach the Li ion Power Pack to the...

Page 7: ...ervo screws closest to the Li ion pack should be installed with screw heads facing inward and the nuts attached on the outside of the chassis see Figure 5 b Step 12 Re attach the drive wheels and tail...

Page 8: ...to gently pry them out Lithium cells come pre charged so treat them carefully they already contain a significant amount of energy Handle with care and do not short the terminals Step 14 Re mount your...

Page 9: ...in the following a Cell charging circuits are disabled and Status indicator LEDs are disabled b The cells are electrically connected into a series configuration c Cell Power Output jack is connected...

Page 10: ...to the board to see if the condition persists Blinking The temperature of the cell is outside the safe charging zone The safe charging zone is typically set for between 32 and 113 F 0 to 45 C Off The...