zihatec RasPiBox Zero Lite Instructions for use

Construction manual RasPiBox Zero Rev A
RasPiBox Zero Lite
Version 2.1
construction manual
Rev. Date Description
A 02.09.16 First release
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Construction manual RasPiBox Zero Rev A
Tools:
agregulated soldering iron
(25..40 ) with small tip
a wet sponge to clean the
tip
thin solder wire
Side cutting pliers
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Construction manual RasPiBox Zero Rev A
Needle nose pliers
Medium cross slot screwdriver
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Construction manual RasPiBox Zero Rev A
Parts Basic Version:
3x
2pole terminal block
(K2, K6, K )
1x
2x20pole female header
(K1)
2x
din rail holders
2x
self-tapping screws
1x
Schottky diode
MBRS140
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cathode

Construction manual RasPiBox Zero Rev A
1.) Prepare the terminal blocks
Find the terminal blocks, they're grey or blue and come in 2-pin shapes. e'll need to slide
two 2-pin blocks together:
2.) Place and solder terminal blocks
e've to put the blocks into the proto plate. Make sure you place them so that the open
ends are facing out as shown:
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Construction manual RasPiBox Zero Rev A
3.) Assemble and solder the 40 pole socket
e've to place and solder the 2x20 pin socket for the Raspberry Pi :
4.) Place and solder the schottky diode
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cathode

Construction manual RasPiBox Zero Rev A
5.) Set the solder jumper (basic kit only)
Attention: Please set this jumper in the basic version only! You
can supply the PiZero with 5V DC directely rom the terminal
K2 now.
Per orm the next steps only i you have the standard kit
(includes the parts o the voltage regulator and USB socket).
Otherwise continue with step 16.
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Set the soldering
jumper

Construction manual RasPiBox Zero Rev A
Additional parts of Standard Version:
1x
capacitor 100nF
(C13)
1x
Electrolytic capacitor
220uF/35V
(C11)
1x
Tantal capacitor 6 uF
(C12)
1x
suppressor diode
SM6T39CA (code GP60 )
(D3)
1x
switching regulator IC
LM2675
(IC2)
1x
Schottky diode
MBRS140 (code pH21)
(D1)
1x
inductor 330uH
(L1)
1x
USB-A socket
(K3)
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(+)

Construction manual RasPiBox Zero Rev A
Power supply circuit:
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Construction manual RasPiBox Zero Rev A
Placement:
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L1
D1
C12
IC2
D3
D5
C13

Construction manual RasPiBox Zero Rev A
6.) Assemble Diode D5
Pls Note: D5 has no polarity!
7.) Assemble the switching regulator IC (IC2)
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Pin 1
D5
Pin 1

Construction manual RasPiBox Zero Rev A
8.) Assemble the capacitor C13
9.) Assemble the schottky diode D1
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cathode

Construction manual RasPiBox Zero Rev A
10.) Assemble the tantal capacitor C12
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(+)

Construction manual RasPiBox Zero Rev A
11.) Prepare the inductance and pads
Depending from the situation on the market we equip the kits with
different inductors. Some of them need a special preparation.
preparation needed: no preparation needed:
11.1) add solder to the coil:
11.2) add solder to the pcb:
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Construction manual RasPiBox Zero Rev A
12.) Assemble the inductance L1
13.) Assemble the electrolytic capacitor C11
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Construction manual RasPiBox Zero Rev A
14.) Assemble the USB socket K3 (option)
15.) Connect the USB port
It's very important that the wires for D+ and D- have exactely the
same length. The optimal length for the cables is 6-7 cm.
pcb PiZero
Vcc PP1
D- PP23
D+ PP22
A ground connection is not needed!
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Construction manual RasPiBox Zero Rev A
16.) Mount the pcb into the bottom shell
17.) Mount the 2 holders for the din rail
Please ta e care to mount the holder from the inner channel to the outside!
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Construction manual RasPiBox Zero Rev A
18.) Mount the top shell!
Finish!
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Milling on top side
(sd card of PiZero)