Hi Roger
I’ approximately 300 miles away from my printer :- (( cannot check the wiring again for a while. I won’t be able to hack again my Lexmark before 2 or 3 weeks (well… If my boss lets me go :- / )
Did you also check the different “software switches” when burning your firmware in your Attiny ? I think mine was faulty.
Without a correct timing, would the laser be running ? I really don’t know. Only Mark could answer these questions.
73’
Marc
De : Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
Envoyé : samedi 4 avril 2015 06:01
À : Homebrew_PCBs@yahoogroups.com
Objet : Re: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
Hi Marc & Mark,
I saw Marc's question marks on the same couple of wires I need some clarification on. I haven't seen any resolution yet, and wonder if these wires should be cut back to the connectors, left floating, or something else I am missing?
Below is my hookup chart. Is there anything that is incorrect, or needs adding?
MCU Board Hookup
Device
Function
Conn
Color
ATtiny13 MCU
Function
Operator Panel
3.3V
J5-5
BL
2
Pad no.’s = Pin no.’s
PB3
Cover Open
Switch Wires
5V
J7-1
YE
8
VCC
5V
J7-2
RD
GND
J7-3
BK
4
GND
New Paper In Sensor
(was narrow sensor)
0-5V
J14-1
RD
(Splice Sensor wire to J14 wire)
5V
J14-2
BL
5
4.99k to PAD 8 VCC
MOSI
GND
J14-3
BK
4
GND
Manual Feed
Paper Sensor
5V (1.1V)
J23-1
BL
N/C
5V
J23-2
WT
6
MISO
GND
J23-3
BK
4
GND
Exit Sensor
5V (>0V)
J27-4
BL
N/C
5V
J27-5
WT
3
PB4
GND
J27-6
BK
4
GND
Thanks for any assistance,
Roger
On 2/6/2015 5:46 AM, Marc.olanie@decision.fr [Homebrew_PCBs] wrote:
Hi Mark
I triple checked all the wiring (see below)