====== Papers & notes concerning electronics ======
===== Papers =====
* [[notes:EOC2610|wireless access point hack, M25P64 flash memory programming]]
* [Datasheets directory](http://boris.maetech.it/docs/datasheets/)
* Slides ["elettronica open source - microcontrollers"](http://boris.maetech.it/docs/papers/opensourceelectronics-microcontrollers.pdf) : overview sui microcontroller, utilizzate in occasione del Linux Day 2011 a Pordenone
* [[http://boris.maetech.it/docs/papers/couplers.html|Types of Plugs IEC standard]]
* [[http://boris.maetech.it/docs/papers/sigle_cavi_EL.html|Cable designations standards]] also [[http://boris.maetech.it/docs/papers/sigle_cavi_EL.pdf|pdf]] version
==== External Links ====
Bit manipulating hacks
* https://graphics.stanford.edu/~seander/bithacks.html
Nuova Elettronica
* http://www.1000bit.it/support/riviste/rivista.asp?id=82
Beautiful electronic project - The Bulbdial clock
* http://www.ironicsans.com/2008/03/idea_the_bulbdial_clock.html
* http://www.evilmadscientist.com/2010/on-the-design-of-the-bulbdial-clock/
Using CDs to measure laser wavelenght
* http://www.nnin.org/sites/default/files/files/Karen_Rama_USING_CDs_AND_DVDs_AS_DIFFRACTION_GRATINGS_0.pdf
===== SMD Fuses Letter to Value Chart =====
B = 0.125
C = 0.2
D = 0.25A
E = 0.375A
F = 0.5A
X = 0.68A
G = 0.75A
H = 1.0A
J = 1.25A
K = 1.5A
L = 1.75A
N = 2.0A
O = 2.5A
P = 3.0A
R = 3.5A
S = 4.0A
T = 5.0A
(thanks to Carlo Pollice)
===== D-Sub connectors =====
{{:notes:dsubminiatures.svg.png|}}
===== Lamp sockets =====
* GY socket, one pin is bigger than the other, used for MSD discharge lamps.
* GX socket, both pins same thickness, used for PC-proj's 1000W lamps.
===== Pinouts & Wirings =====
==== ELMO Serial cable ====
{{:notes:serial_minidin.png|}}
^ MINIDIN ^ DB-9 ^
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | NC |
| Sch | NC |
==== DUCATO LAMPADA VANO MERCE ====
Red/blue = +12V (subject to timeout)
Green/black = 0V door switch
Black = 0V
+---------------------+
conn. | |
| | | | +-----(X)----+---/--+ switch 1
| | +--+ | lamp |
| +------+ +---/--+ switch 2
| |
+----------------------------+
==== Spencer Resusci Power Plug ====
The socket used is an XLR
Pin 1 = +12V
Pin 2 = GND
=== Nellcor(r)/Sunrom pulsioximetry sensor ===
numbers refer to DB9 connector pins
IR led
2 --------+-----|>|------+-------- 3
|-----|<|------|
RED led
photodiode
5 -------------|>|---------------- 9
7 -------( cable main shield )
6.0K-9.7K
6 -------+-------/\/\/\/\---------- 1
|
|-------( sensor shield )
=== Symbol LS2106 barcode scanner ps/2 wiring / pinout ===
^ To scanner ^^^ ^ PS/2 ^^^
^ Rj45 pin ^ wire colour ^ header pin ^ function ^ IDC pin ^ wire col ^ din pin ^
| | orange | 1 |data out | 2 | red | 1 (male) |
| | red | 2 |+5 Vcc | 4 | green | 4 (male) |
| ::: | ::: | ::: | ::: | 13 | purple | 4 (female) |
| | yellow | 3 |ground | 3 | orange | 3 (male) |
| ::: | ::: | ::: | ::: | 10 | orange | 3 (female) |
| | green | 4 |clock in | 5 | purple | 5 (male) |
| | brown | 5 |clock out | 12 | green | 5 (female) |
| | purple | 6 |data in | 14 | red | 1 (female) |
| NC | - | - | shield | 6 | shield | shield |
Note: Male ps/2 to PC, female PS/2 to keyboard (optional)
Note: +5Vcc line interrupted by external adaptor plug: if plug is inserted, ps/2 vcc is disconnected and external + goes to scanner
=== METEOR START-UNI 1ST052642 barcode scanner wiring ===
The handheld scanner presents a cable with a DB9 female on its ending. It has an adapter from DB9 Male to 2 x PS/2 (DIN) Male & Female.
Inside the handheld scanner, the cable attaches to K2 on an aux pcb with a 232 transceiver and the pushbutton switch. K1 on this pcb goes to the real barcode scanner PCB assy. The following table represents wiring, between brackets wiring through the RS232 transceiver.
^ PS2 male ^ PS2 female ^ DB9 (scanner) ^ wire colour ^ K2 ^ K1 ^ note ^
| 4 | 4 | 9 | black | 1 | 1 | VCC +5V |
| 3 | 3 | 7 | purple | 2 | 2+3 | GND |
| | | | | | 4 | switch to gnd |
| | 5 | 4 | green | 5 | 5 | ps2 clock out |
| | 1 | 8 | grey | 6 | 6 | ps2 data in |
| | | 3 | yellow | 8 | (7) | rs232 RX (from host) |
| | | 5 | blue | 7 | (8) | rs232 TX (to host) |
| 1 | | 1 | brown | 3 | 9 | ps2 data out |
| 5 | | 2 | red | 4 | 10 | ps2 clock in |
Not mentioned pins are Not Connected. The aux pcb also has a jumper and a 7805 footprint for +12V supply from the same K2 pin 1. The jumper & 7805 footprint are between K2 pin 1 and K1 pin 1.
=== Urmet domus power supply and peripherals ===
External station (portiere elettrico):
* 1 don't know, maybe not amplified output
* 1A amplified microphone output
* 2 input
* -/+ audio power supply
* L should be LED
* G/T pushbuttons common
* Ux pushbuttons
Power supply module (786/15)
* PS(2) Tone generator output
* C(2)/SN(2) Current sensing circuit (to make relay trip)
* +/- Audio power supply
* -J Amplified output for intercommunicating circuit (audio is revealed from "+" !)
* Relay contacts:
* 2,5,8 common
* 1,4,7 normally open
* 3,6,9 normally closed
* C1-SN1 makes relay trip to NO, C2-SN2 makes relay relax to NC
Internal station
{{::notes:urmet.png?200|}}
=== IBM 4820 Touch monitor (ELO 4500U) ===
Connector marked as "4" is USB device (input), optionally plus power.
P/N 14J0930, 14J0624 --- FRU/SMU 42M5673, 42M5671
Referring to the image, pin 2 is D-, pin 3 is D+, pin 4&5 are GND.
{{:projects:ibm4820-pow-pinning.png?200|}}
A guide says pin 1 should be 5V input and pin 6 12V input, but I am not convinced about this.
=== AVR simple programmers ===
mcu DAPA STK200=ponyprog DASA (serial)
VCC 3 -
RST 16 9 7 (4.7k res. series + 5.1 zener diode to gnd)
SCK 1 6 (opt. 1k r) 4 (4.7k res. series + 5.1 zener diode to gnd)
MOSI 2 7 (opt. 1k r) 3 (4.7k res. series + 5.1 zener diode to gnd)
MISO 11 10 8 (no add'l comp)
=== Cisco rj45 rs232 terminal console ===
RJ45 male (cisco) DB9 female (PC)
RJ45 DB9
- 1
3 2
6 3
7 4
4+5 5
2 6
8 7
1 8
- 9
________
/ /|
|||||||| |
1 8
contact view
(hook is behind)
=== APC Smart UPS communcation rs232 cable ===
Dumb segnalling
UPS DB9 PC DB9
4 5
2 8
1 4
5 1
8--10k--1
Smart cable
UPS DB9 PC DB9
2 2
1 3
9 5
a version says
1+2
7+8
another says
1+4
7+8
Terminal is 2400:8n1
=== Sharp LCD module 1x16 alpha chars (taken from a laser printer) ==
pin funct
1+2 gnd
3 led buffer enable #g1
5 44780 enable
6 44780 r/w
15 vcc
16 gnd
17 44780 rs + led buffer clock
18 db4
19 db5
20 db6
21 db7
=== Chinese PL-2303 USB to ttl serial interface ===
|^^^^^^^^^^^^^^^^^^^^^^|
^^^^^| o | <--- 3.3V out
| component oo | <--- GND
usb | side oo | <--- RX (from ext.device to the pc )
A | oo | <--- TX (from the pc to the ext.device)
_____| o | <--- 5V out
|______________________|
=== Professional 4-pin-XLR headsets ===
used for intercoms, etc..
4 pin XLR : 1. MIC GND - 2. MIC SIGNAL - 3. EARPHONES GND - 4. EARPHONES SIGNAL
===== Cinema-tech =====
* **Dolby Sorround** = fittizio, parte da una traccia stereo e ricrea il rear con un po di delay
* **Dolby Spectral Recording** (per il cinema) e **Dolby Pro Logic** (per l'home teather) = appare il canale centrale e (opzionale) il canale LFE (low frequency effects)
* **Dolby Digital** = codifica AC3 multicanale
* **DTS** = più raffinato rispetto al Dolby Digital
**CINEMASCOPE** da pellicola [-] apre a schermo 221:100 [ -- ]