Difference between revisions of "Coinvox 22"
(added reed switch order info) |
(translated resistor number to port number, added address, heck, made fancy buttons because I can) |
||
| Line 34: | Line 34: | ||
=== keypad / display === | === keypad / display === | ||
* IC2: [http://www.nxp.com/documents/data_sheet/PCF8576.pdf PCF8576T] (Universal LCD driver for low multiplex rates, I<sup>2</sup>C) | * IC2: [http://www.nxp.com/documents/data_sheet/PCF8576.pdf PCF8576T] (Universal LCD driver for low multiplex rates, I<sup>2</sup>C) | ||
| − | * IC3: [PCF8574T (Remote 8-bit I/O expander for I<sup>2</sup>C-bus with interrupt) | + | * IC3: [http://www.nxp.com/documents/data_sheet/PCF8574_PCF8574A.pdf PCF8574T] (Remote 8-bit I/O expander for I<sup>2</sup>C-bus with interrupt) |
| + | *: Addresses tied to ground; address 20h (r:41h/w:40h) | ||
'''J''' | '''J''' | ||
| Line 46: | Line 47: | ||
{| class="wikitable" | {| class="wikitable" | ||
! | ! | ||
| − | ! col1 ( | + | ! col1 (P7) |
| − | ! col2 ( | + | ! col2 (P4) |
| − | ! col3 ( | + | ! col3 (P5) |
| − | ! col4 ( | + | ! col4 (P6) |
|- | |- | ||
| − | ! row1 ( | + | ! row1 (P1) |
| n/c | | n/c | ||
| − | | 1 | + | | {{k|1}} |
| − | | 2 | + | | {{k|2}} |
| − | | 3 | + | | {{k|3}} |
|- | |- | ||
| − | ! row2 ( | + | ! row2 (P1) |
| n/c | | n/c | ||
| − | | 4 | + | | {{k|4}} |
| − | | 5 | + | | {{k|5}} |
| − | | 6 | + | | {{k|6}} |
|- | |- | ||
| − | ! row3 ( | + | ! row3 (P2) |
| − | | N | + | | {{k|N}} |
| − | | 7 | + | | {{k|7}} |
| − | | 8 | + | | {{k|8}} |
| − | | 9 | + | | {{k|9}} |
|- | |- | ||
| − | ! row4 ( | + | ! row4 (P3) |
| − | | Vol | + | | {{k|Vol}} |
| − | | * | + | | {{k|*}} |
| − | | 0 | + | | {{k|0}} |
| − | | # | + | | {{k|#}} |
|} | |} | ||
| Line 86: | Line 87: | ||
:Version.mec: A | :Version.mec: A | ||
Date fab : 02/95 | Date fab : 02/95 | ||
| + | |||
== plans == | == plans == | ||
* upload reference material of the Coinvox phones ([http://hacktic.nl/ hacktic], [https://web.archive.org/web/20050824080547/http://www.klaphek.net/ 't klaphek], telephone museums ([http://www.telefoonmuseum.eu/][http://houwelingtelecommuseum.com/][http://www.telefoonmuseum.com/][http://www.actw.nl/][http://www.telefoniemuseum.nl/][http://www.muscom.nl/][http://test.drouwenerzand.nl/halloween/attracties/telefoonmuseum/]) | * upload reference material of the Coinvox phones ([http://hacktic.nl/ hacktic], [https://web.archive.org/web/20050824080547/http://www.klaphek.net/ 't klaphek], telephone museums ([http://www.telefoonmuseum.eu/][http://houwelingtelecommuseum.com/][http://www.telefoonmuseum.com/][http://www.actw.nl/][http://www.telefoniemuseum.nl/][http://www.muscom.nl/][http://test.drouwenerzand.nl/halloween/attracties/telefoonmuseum/]) | ||
Revision as of 22:16, 23 October 2015
| Project: Coinvox 22 | |
|---|---|
| Featured: | |
| State | Active |
| Members | xopr |
| GitHub | No GitHub project defined. Add your project here. |
| Description | Get an old payphone to work again |
| Picture | |
| No project picture! Fill in form Picture or Upload a jpeg here | |
synopsis
I got myself a Coinvox 22, reasonably cheap. The downside is: the inner workings have been stripped out, so it's just a metal box with keypad and display, a handset with hookswitch and a smalltransformer.
No coin mech, no ringer, no phone.
inside
handset / hookswitch
- 2 differend reed switches
- 4 coils
- 2 3-pin SOT 23 (smd) diodes(?) (D1, D2: A7 P 45)
J1
|o spk |o| mic - |o| mic + |o spk
J2
mic+ 2 |oo| 1 spk spk 4 |oo| 3 mic- NC1 6 |oo |5 n/c NO1 8 |oo| 7 P1 P2 10|oo| 9 NO2
Note: SW1 switches first (about 2mm) when hanging up
keypad / display
- IC2: PCF8576T (Universal LCD driver for low multiplex rates, I2C)
- IC3: PCF8574T (Remote 8-bit I/O expander for I2C-bus with interrupt)
- Addresses tied to ground; address 20h (r:41h/w:40h)
J
SCL 2 |oo| 1 SDA
4 |oo| 3
GND 6 |oo |5 VCC
8 |oo| 7
Int 10|oo| 9
Keypad
| col1 (P7) | col2 (P4) | col3 (P5) | col4 (P6) | |
|---|---|---|---|---|
| row1 (P1) | n/c | 1 | 2 | 3 |
| row2 (P1) | n/c | 4 | 5 | 6 |
| row3 (P2) | N | 7 | 8 | 9 |
| row4 (P3) | Vol | * | 0 | # |
- LGCO-CH BTC15 DESKII
- 4 431 4223 0 22
Sticker
- Landis & GYR
- 412197580 A
- Version.mec: A
Date fab : 02/95
plans
- upload reference material of the Coinvox phones (hacktic, 't klaphek, telephone museums ([1][2][3][4][5][6][7])
- experiment with my (front fed) coin mech (or look for a top fed mech that fits)
- experiment with a cisco phone (see if I can use the softkeys and the AUX port to read quarters or just Euro coins
- connect an ATA to an old phone
todo
- identify ICs, obtain datasheet, determine pinouts
