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Bubble Magnus Dosing Pump

solasido

By solasido,
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solasido Newbie

solasido

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Thought of sharing what I found. Recently managed to fix my spoilt unit due to the broken motor driver. Went to Simlim tower and bought the replacement part, in solder existing one and replaced it.

1. To open the unit, flip and unscrew the 2 screws at the bottom side.

post-20304-13959914391107_thumb.jpg

2. The circuit inside is quite simple.

The heart of the unit is the Microchip PIC 16F877A microcontroller that controls the display, buttons and timers.

It uses transistor array IC ULN2003a to drive the motor. There are 2X of this. Therefore it should be able to actually drive up to 14 motors. We can see 2 female sockets on the board for extending the pump units.

It uses a button cell battery to keep the settings and clocks running when out of power supply.

post-20304-13959915883991_thumb.jpg

post-20304-1395991909772_thumb.jpg

Sent from my SM-N9005 using Tapatalk

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ASHWIN Newbie

ASHWIN

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Hey Man Thanks for Sharing haha..

Just a small prob will cause them on spending tons of $$ for new ones or Repairing At A Local LFS..

can Refer You!

Cheers! :)

300Gallons of Pure Goodness! >Dimensions 6x2x2 (Foot)

1: Maxspect 160 Watt qty-2

2: Vortech MP 40 Wes

3:Jaebao WP40 qty-2

3: Skimz Becket Skimmer/ Ehiem 1260

4: Dymax XC 900 Calcium Reactor

5: American Pinpoint PH Controller

6: Iwaki MD 55 And MD 70 (Return)

7: Hydra Aquatics FR45 Reactor

8:Hailea 10HP Chiller

R2R forum->>>http://www.reef2reef.com/forums/photography-forum/154896-ashwins-reefing-photography.html

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