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seqv4plus_le_mec [2017/10/09 21:19] latigid_on [v1.0] |
seqv4plus_le_mec [2018/08/20 21:14] latigid_on |
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===== Schematic ===== | ===== Schematic ===== | ||
- | A shift register chain of 3 DIN 74HC165 and 2 DOUT 74HC595 chips are used. Two of the DINs scan the encoders and one scans the button columns. The DOUT parts are connected into a matrix. Note that both the high and low sides have driver transistors (PNP and NPN, respectively). This means that the anode side of the matrix will operate with inverted behaviour (pin high = LED off). | + | A shift register chain of 3 DIN 74HC165 and 2 DOUT 74HC595 chips are used. Two of the DINs scan the encoders and one scans the button columns. The DOUT parts are connected into a matrix. Note that both the high and low sides have driver transistors (PNP and NPN, respectively). This means that the anode side of the matrix will operate with inverted behaviour (pin high = LED off). Actually the low (cathode) side is also "inverted," as we turn the transistor "on" to sink the current by toggling the 595 pin high. |
There are special instructions for connecting the parts which are covered below. | There are special instructions for connecting the parts which are covered below. | ||
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^Resistors^^^^^^^^^^ | ^Resistors^^^^^^^^^^ | ||
| |1 |wire link |THT |R17 | | | | | | | | |1 |wire link |THT |R17 | | | | | | | ||
- | | |18 |47R 5% |THT |RJ1-9 | | | | |see instructions | | + | | |16 |47R 5% |THT |RJ1-8 | | | | |see instructions | |
- | | |8 |100-220R 5% |THT or 1206 |SJ1-8 | | | | |see instructions | | + | | |10 |100-220R 5% |THT or 1206 |SJ1-8, RJ9 | | | | |see instructions | |
| |16 |1k 5% |THT |R1-16 | | | | | | | | |16 |1k 5% |THT |R1-16 | | | | | | | ||
+ | | |8 |10k 5% |1206 |R18-25 | | | | |near NPN transistors | | ||
^Resistor networks^^^^^^^^^^ | ^Resistor networks^^^^^^^^^^ | ||
| |3 |9*10k |SIP10 |RN1-3 | | | | |bussed network, __not__ 5 pairs of resistors | | | |3 |9*10k |SIP10 |RN1-3 | | | | |bussed network, __not__ 5 pairs of resistors | | ||
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^Diodes^^^^^^^^^^ | ^Diodes^^^^^^^^^^ | ||
| |24 |1N4148 |THT | | | | | | | | | |24 |1N4148 |THT | | | | | | | | ||
+ | | |24 |BAT54|SOT-23 | |512-BAT54 |BAT 54 SMD | | | | | ||
^LEDs^^^^^^^^^^ | ^LEDs^^^^^^^^^^ | ||
| |16 |RGB flat |superflux | | | | |ELV: 68-10 94 64 |see instructions| | | |16 |RGB flat |superflux | | | | |ELV: 68-10 94 64 |see instructions| |