controller
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obsolete: type: attiny26 - for the very first steps (most likely must be replaced by attiny861 because of too less flash memory)
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obsolete: speed: 2MHz internal calibrated RC oscillator, !!! manual load of calibration register required !!!
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see here
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fuses (lfuse, hfuse, efuse): 0x62, 0xDC, 0x1 -> BODLEVEL[0:1] especially programmed to '0' to activate 4.3V operating voltage observation
inputs port B
temperatures (amplified voltage drop of NTC thermistor driving with constant current)
inner: PB5 (pin 8) -> ADC8
outer: PB6 (pin 9) -> ADC9
command switches (high active, pulled down low)
btn1 (down): PB2 (pin ?)
btn2 (up): PB1 (pin 2)
outputs port B
solid state relays for operation of mixer motor coils with external LEDs (!!! max 5 mA !!!)
clockwise: PB4 (pin 7)
counter clockwise: PB3 (pin 4)
outputs port A -- alphanumeric LCD
CN = connector
mc port | mc pin | CN pin | LCD pin | signal |
PA0 | 20 | 6 | 4 | RS |
PA1 | 19 | 7 | 5 | RD/RW |
PA2 | 18 | 8 | 6 | EN |
PA3 | 17 | free | | |
PA4 | 14 | 9 | 11 | DB4 |
PA5 | 13 | 10 | 12 | DB5 |
PA6 | 12 | 11 | 13 | DB6 |
PA7 | 11 | 12 | 14 | DB7 |
| | 3 | 1 | GND |
| | 4 | 2 | VCC +5V |
| | 5 | 3 | contrast, 0 - 5V potentiometer controlled |
input button and LED wiring
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connector name: X2 -> LEDs, X3 -> switch contact
connectors are located on front panel PCB
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buttons: S4, S5
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btton type: ITT-SER-L
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supplier: reichelt elektronik
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order number: DTL 2 BL, DTL 2 RT
button 1 (S4, blue, down) |
front panel | main pcb | signal | wire color |
btn pin | CN pin | CN pin |
1 | X3.1 | J4.3 | down | white |
2, 3 | X3.10 | J4.1 | VCC +5V | brown |
4 | – | J4.2 | GND (nc) | black |
A | X2.5 | J5.1 | ccw | green |
K | X2.12, X2.14 | J5.3 | GND | brown
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button 2 (S5, red, up) |
1 | X3.3 | J4.4 | up | yellow |
2, 3 | X3.10 | J4.1 | VCC +5V | brown |
4 | – | J4.2 | GND (nc) | black |
A | X2.9 | J5.2 | cw | yellow |
K | X2.12, X2.14 | J5.3 | GND | brown |
forerun temperature sensor wiring
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cable type: RKMV 3-225/5 F
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supplier: Reichelt Elektronik
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order number: RKMV 3-5
CN pin | CN color | RKMV pin | RKMV color | signal |
1 | yellow | 3 | blue | IF_HIGH |
2 | vio | 4 | black | IF_LOW |
- | - | 1 | brown | - |
temperature receiver sensor wiring
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cable type: RSMV 4-225/5 M
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supplier: reichelt elektronik
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order number: RSMV 4-5
CN pin | CN color | RSMV pin | RSMV color | signal |
1 | red | 1 | brown | VCC +5V |
2 | white | 2 | white | GND |
1 | blue | 3 | blue | DATA |
2 | black | 4 | black | GND |
temperature sender power supply wiring
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connector type: RSMCK
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supplier: reichelt elektronik
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order number: RSMCK 3
CN pin | CN color | RSMCK pin | RSMCK color | signal |
1 | red | 1 | brown | VCC +6V |
2 | black | 4 | black | GND |
- | - | 3 | blue | - |
isp programming adapter wiring
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name: X8
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type: Wannenstecker, 10-polig, gerade
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supplier: reichelt elektronik
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order number: WSL 10G
CN pin | signal | μC pin t861 | μC pin t85 |
1 | MOSI | 1 | 5 |
2 | VCC +5V | 5 | 8 |
3 | nc | – | – |
4 | GND | 6 | 4 |
5 | RESET | 10 | 1 |
6 | GND | 6 | 4 |
7 | SCK | 3 | 7 |
8 | GND | 6 | 4 |
9 | MISO | 2 | 6 |
10 | GND | 6 | 4 |
230V~ SSR wiring
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name: X4-X7
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type: wago series 236
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supplier: me
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order number: W236-1 (naming in eagle layout editor)
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chassis connector type: STAKEI 3 N grau/grey
pcb CN pin | chassis CN pin | signal | color |
X4 | - | L1 | black |
X5 | 1 | MIX_CW | red/black |
X6 | - | L1 | black |
X7 | 2 | MIX_CCW | black |
- | 3 | N | blue |
- | pe | PE | gn/ye |