display_driver
Differences
This shows you the differences between two versions of the page.
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display_driver [2018/03/07 22:48] latigid_on created |
display_driver [2018/03/31 13:46] (current) latigid_on [Interconnection to Core] |
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| The second purpose is to use a chain of shift registers to provide chip select (CS) signals. It is functionally equivalent to a DOUT module, but the header is directly compatible with GPIO on the Core. | The second purpose is to use a chain of shift registers to provide chip select (CS) signals. It is functionally equivalent to a DOUT module, but the header is directly compatible with GPIO on the Core. | ||
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| + | The pinout for the display connectors is as follows: | ||
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| + | {{:dispdriver:header_j1-j2.png?direct&600|}}\\ | ||
| + | (Power is connected to pin 10.) | ||
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| ---- | ---- | ||
| Line 22: | Line 32: | ||
| | | C6 | 100n | C025-025X050 | | | | C6 | 100n | C025-025X050 | | ||
| | | C7 | 100n | C025-025X050 | | | | C7 | 100n | C025-025X050 | | ||
| - | | ICs | IC1 | 74HC541N | DIP 20 | | + | | ICs | IC1 | 74HC541N | 74HC541N | |
| - | | | IC2 | 74HC541N | DIP 20 | | + | | | IC2 | 74HC541N | 74HC541N | |
| - | | | IC3 | 74HC541N | DIP 20 | | + | | | IC3 | 74HC541N | 74HC541N | |
| - | | | IC4 | 74HC595N | DIP 16 | | + | | | IC4 | 74HC595N | 74HC595N | |
| - | | | IC5 | 74HC595N | DIP 16 | | + | | | IC5 | 74HC595N | 74HC595N | |
| - | | | IC6 | 74HC595N | DIP 16 | | + | | | IC6 | 74HC595N | 74HC595N | |
| - | | | IC7 | 74HC595N | DIP 16 | | + | | | IC7 | 74HC595N | 74HC595N | |
| | Headers | J1 | PINHD-2X54WALL | PAK100/2500-10 | | | Headers | J1 | PINHD-2X54WALL | PAK100/2500-10 | | ||
| | | J2 | PINHD-2X54WALL | PAK100/2500-10 | | | | J2 | PINHD-2X54WALL | PAK100/2500-10 | | ||
| Line 66: | Line 76: | ||
| | | R23 | ~220R | 0207/10 | | | | R23 | ~220R | 0207/10 | | ||
| | | R24 | ~220R | 0207/10 | | | | R24 | ~220R | 0207/10 | | ||
| - | | | R25 | ~220R | 0207/10 | | + | | | R25 | ~1k | 0207/10 | |
| - | | | R26 | ~220R | 0207/10 | | + | | | R26 | ~1k | 0207/10 | |
| - | | | R27 | ~220R | 0207/10 | | + | | | R27 | ~1k | 0207/10 | |
| - | | | R28 | ~220R | 0207/10 | | + | | | R28 | ~1k | 0207/10 | |
| - | | | R29 | ~220R | 0207/10 | | + | | | R29 | ~1k | 0207/10 | |
| - | | | R30 | ~220R | 0207/10 | | + | | | R30 | ~1k | 0207/10 | |
| - | | | R31 | ~220R | 0207/10 | | + | | | R31 | ~1k | 0207/10 | |
| - | | | R32 | ~220R | 0207/10 | | + | | | R32 | ~1k | 0207/10 | |
| - | | | R33 | ~220R | 0207/10 | | + | | | R33 | ~1k | 0207/10 | |
| - | | | R34 | ~220R | 0207/10 | | + | | | R34 | ~1k | 0207/10 | |
| - | | | R35 | ~220R | 0207/10 | | + | | | R35 | ~1k | 0207/10 | |
| - | | | R36 | ~220R | 0207/10 | | + | | | R36 | ~1k | 0207/10 | |
| - | | | R37 | ~220R | 0207/10 | | + | | | R37 | ~1k | 0207/10 | |
| - | | | R38 | ~220R | 0207/10 | | + | | | R38 | ~1k | 0207/10 | |
| - | | | R39 | ~220R | 0207/10 | | + | | | R39 | ~1k | 0207/10 | |
| - | | | R40 | ~220R | 0207/10 | | + | | | R40 | ~1k | 0207/10 | |
| - | | | R41 | ~220R | 0207/10 | | + | | | R41 | ~1k | 0207/10 | |
| - | | | R42 | ~220R | 0207/10 | | + | | | R42 | ~1k | 0207/10 | |
| - | | | R43 | ~220R | 0207/10 | | + | | | R43 | ~1k | 0207/10 | |
| - | | | R44 | ~220R | 0207/10 | | + | | | R44 | ~1k | 0207/10 | |
| - | | | R45 | ~220R | 0207/10 | | + | | | R45 | ~1k | 0207/10 | |
| - | | | R46 | ~220R | 0207/10 | | + | | | R46 | ~1k | 0207/10 | |
| - | | | R47 | ~220R | 0207/10 | | + | | | R47 | ~1k | 0207/10 | |
| - | | | R48 | ~220R | 0207/10 | | + | | | R48 | ~1k | 0207/10 | |
| - | | | R49 | ~220R | 0207/10 | | + | | | R49 | ~1k | 0207/10 | |
| - | | | R50 | ~220R | 0207/10 | | + | | | R50 | ~1k | 0207/10 | |
| - | | | R51 | ~220R | 0207/10 | | + | | | R51 | ~1k | 0207/10 | |
| - | | | R52 | ~220R | 0207/10 | | + | | | R52 | ~1k | 0207/10 | |
| - | | | R53 | ~220R | 0207/10 | | + | | | R53 | ~1k | 0207/10 | |
| - | | | R54 | ~220R | 0207/10 | | + | | | R54 | ~1k | 0207/10 | |
| - | | | R55 | ~220R | 0207/10 | | + | | | R55 | ~1k | 0207/10 | |
| - | | | R56 | ~220R | 0207/10 | | + | | | R56 | ~1k | 0207/10 | |
| Line 110: | Line 121: | ||
| - | Here the header notches are aligned with the silkscreen. Only the first six are required. | + | Here the header notches are aligned with the silkscreen. Only the first six wires are required. |
| ===== Assembly ===== | ===== Assembly ===== | ||
| - | The 1206 caps and SMT parts should be soldered first. Note the orientation of ICs! In general they will have pin 1/16 nearest the decoupling cap. Pin 1 for RNs is marked with a circle, important as these chips are also polarised. Some headers are marked as "socket this side." To use the module normally, install the headers on the rear side. | + | All parts are THT, start with resistors and caps, IC sockets then headers. |
| - | + | ||
| - | Note the instructions for DOUT1/2. You either need ICs 11/12 and resistors vertically mounted or spanning the outermost pads in place of IC11/12. | + | |
| Line 128: | Line 137: | ||
| J15A1/J10B1 chain another Display Driver. Note that the J15 connection should not be mirrored for subsequent boards. | J15A1/J10B1 chain another Display Driver. Note that the J15 connection should not be mirrored for subsequent boards. | ||
| + | |||
| + | J9 is a power supply input that is sent to the displays over headers J1-J8. It may be better to wire the displays directly to the power supply rather than using the ribbon cable and connectors. | ||
| ==== Dimensions ==== | ==== Dimensions ==== | ||
| - | The PCB is 100*100mm with 3.6mm diameter holes centred 3.5mm from the edges. | + | The PCB is 100*100mm with 3.2mm diameter holes centred 3.5mm from the edges. |
display_driver.1520462930.txt.gz · Last modified: 2018/03/07 22:48 by latigid_on
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