________________________________________________________________________________________________________________________________________________
Please read this
(even if you do not read any other part of this manual)
Power Supply
The
HB5 H series
of Touch Computers requires a 5 volt DC power input
is 4.75 to 5.25 volts DC.
Your HB5 H series computer has protection for over voltage up to 24 volts.
It
does not have protection
for reverse polarity, so please take care when applying power. The reason it does
not have reverse polarity protection is that we use the incoming 5 volts power for the USB circuitry, etc rather
than creating another power supply to keep costs as low as possi
Power can be applied through the following connectors:
1.
Jack plug (2.5mm centre diameter which is the
below:
2.
Screw terminal connector when ordered instead of the Jack connector
3.
If the Screw terminal PCB (as opposed to the screw terminal connector in 2 above) is fitted then
power can be applied through pins
and
not
A
and
B.
Serial Ports
Your HB5 H series Touch Computer has three asynchronous serial ports.
Ports 1 and 2 are fixed as RS232 ports and are both TX + RX only (i.e. no hardware handshaking
usual an issue these days as the HB5 is fast enough to cope with most baud rates, etc).
The console port, which is the default communications port for Linux and Android, is COM 1 and is available on
P2 on the Picoblade connector PCB. If you have the Screw Terminal PCB then the COM 1 port is on
and the ground is on pin
p
. If you don’t know which con
have to read some more pages .
HB5 Touch Computer
____________________________________________________________________________________________________________________________________________
(even if you do not read any other part of this manual)
of Touch Computers requires a 5 volt DC power input ± 0.25 volts; so the voltage input
H series computer has protection for over voltage up to 24 volts.
reverse polarity, so please take care when applying power. The reason it does
not have reverse polarity protection is that we use the incoming 5 volts power for the USB circuitry, etc rather
than creating another power supply to keep costs as low as possible.
Power can be applied through the following connectors:
diameter which is the positive contact) with a 5.5mm overall diameter. See
Screw terminal connector when ordered instead of the Jack connector
If the Screw terminal PCB (as opposed to the screw terminal connector in 2 above) is fitted then
power can be applied through pins
a
(5 volts) and
b
. Please note that these are lower case letters
ter has three asynchronous serial ports.
Ports 1 and 2 are fixed as RS232 ports and are both TX + RX only (i.e. no hardware handshaking
is fast enough to cope with most baud rates, etc).
which is the default communications port for Linux and Android, is COM 1 and is available on
the Picoblade connector PCB. If you have the Screw Terminal PCB then the COM 1 port is on
f you don’t know which connector PCB you have then sorry but you are going to
Touch Computer
_____________________________________
Page | 10
voltage input range
reverse polarity, so please take care when applying power. The reason it does
not have reverse polarity protection is that we use the incoming 5 volts power for the USB circuitry, etc rather
overall diameter. See
If the Screw terminal PCB (as opposed to the screw terminal connector in 2 above) is fitted then
. Please note that these are lower case letters
Ports 1 and 2 are fixed as RS232 ports and are both TX + RX only (i.e. no hardware handshaking – which is not
which is the default communications port for Linux and Android, is COM 1 and is available on
the Picoblade connector PCB. If you have the Screw Terminal PCB then the COM 1 port is on pins
n
,
o
nector PCB you have then sorry but you are going to
