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Wiki source code of Power controller

Version 19.1 by Mathias Larsen on 2026/09/22 14:53
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Mathias Larsen 14.2 1 == Connector pinout ==
Mathias Larsen 6.2 2
Mathias Larsen 14.6 3 |=(% style="width: 281px;" %)Pin|=(% style="width: 135px;" %) |=(% style="width: 157px;" %)comment|=(% style="width: 132px;" %)
Mathias Larsen 14.9 4 |(% style="width:281px" %)1|(% style="width:135px" %)CANH|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.6 5 |(% style="width:281px" %)2|(% style="width:135px" %)CANL|(% style="width:157px" %) |(% style="width:132px" %)
6 |(% style="width:281px" %)3|(% style="width:135px" %)FAN 1 PWM|(% style="width:157px" %) |(% style="width:132px" %)
7 |(% style="width:281px" %)4|(% style="width:135px" %)FAN 2 PWM|(% style="width:157px" %) |(% style="width:132px" %)
8 |(% style="width:281px" %)5|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
9 |(% style="width:281px" %)6|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
10 |(% style="width:281px" %)7|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
11 |(% style="width:281px" %)8|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
Mathias Larsen 14.7 12 |(% style="width:281px" %)9|(% style="width:135px" %)Accumulator|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.6 13 |(% style="width:281px" %)10|(% style="width:135px" %)Front|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.7 14 |(% style="width:281px" %)11|(% style="width:135px" %)Power fan|(% style="width:157px" %) |(% style="width:132px" %)
15 |(% style="width:281px" %)12|(% style="width:135px" %)Power fan|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.6 16 |(% style="width:281px" %)(((
Mathias Larsen 14.2 17 13
Mathias Larsen 14.7 18 )))|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
19 |(% style="width:281px" %)14|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
20 |(% style="width:281px" %)15|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
21 |(% style="width:281px" %)16|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
22 |(% style="width:281px" %)17|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
23 |(% style="width:281px" %)18|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
24 |(% style="width:281px" %)19|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
25 |(% style="width:281px" %)20|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
26 |(% style="width:281px" %)21|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
27 |(% style="width:281px" %)22|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
28 |(% style="width:281px" %)23|(% style="width:135px" %)GND|(% style="width:157px" %) |(% style="width:132px" %)
29 |(% style="width:281px" %)24|(% style="width:135px" %)12V|(% style="width:157px" %) |(% style="width:132px" %)
30 |(% style="width:281px" %)25|(% style="width:135px" %)12V|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.9 31 |(% style="width:281px" %)26|(% style="width:135px" %)12V power pump1|(% style="width:157px" %) |(% style="width:132px" %)
32 |(% style="width:281px" %)27|(% style="width:135px" %)12V Power pump2|(% style="width:157px" %) |(% style="width:132px" %)
Mathias Larsen 14.7 33 |(% style="width:281px" %)28|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
34 |(% style="width:281px" %)29|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
35 |(% style="width:281px" %)30|(% style="width:135px" %)GND|(% style="width:157px" %)Blob with tin|(% style="width:132px" %)
Mathias Larsen 14.8 36 |(% style="width:281px" %)31|(% style="width:135px" %)Buzzer|(% style="width:157px" %)Is brake light in wiring harnes|(% style="width:132px" %)
Mathias Larsen 14.9 37 |(% style="width:281px" %)32|(% style="width:135px" %)Brake light|(% style="width:157px" %)Is buzzer in wiring harnes|(% style="width:132px" %)
38 |(% style="width:281px" %)33|(% style="width:135px" %)24V|(% style="width:157px" %)reserve|(% style="width:132px" %)
39 |(% style="width:281px" %)34|(% style="width:135px" %)24V|(% style="width:157px" %)reserve|(% style="width:132px" %)
40 |(% style="width:281px" %)35|(% style="width:135px" %)24V|(% style="width:157px" %)sensor card|(% style="width:132px" %)
Mathias Larsen 14.2 41
42
43
Mathias Larsen 6.2 44 == Microcontroller Pinout ==
45
Mathias Larsen 11.1 46 The power controller uses a microcontroller to control the pumps, fans, buzzer, and brake light. It also features current monitoring and LED indicators. The Microcontroller used in this system is STM32G431CBT6
Mathias Larsen 7.1 47
48
Mathias Larsen 2.4 49 |=Physical pin|=Electrical pin|=(((
50 Description
51 )))
Mathias Larsen 4.2 52 |1|VBAT|Power source from a backup battery if a RTC would be used (Connected to +3V3 in this case)
53 |5|OSC_IN|Clock input (8MHz oscillator)
54 |7|NRST|Negative reset which can be connected to a button (Connected to +3V3)
Mathias Larsen 7.2 55 |8|PA0|Analog signal: Current 6 Supply 24V resserve
56 |9|PA1|Analog signal: Current 7 Supply 24V resserve
57 |10|PA2|Analog signal: Current 5 Supply sensor card
58 |11|PA3|Analog signal: Current 4 Supply front
59 |12|PA4|Analog signal: Current 3 Supply accumulator
60 |13|PA5|Analog signal: Current 2 Supply fans
Mathias Larsen 7.3 61 |14|PA6|Digital output LED 9
62 |15|PA7|Digital output LED 2
63 |16|PB0|Analog signal Current 8 Supply buzzer, brake light
Mathias Larsen 8.1 64 |17|PB1|PWM: enable Fan 1
Mathias Larsen 7.4 65 |18|PB2|Input: V-sense
Mathias Larsen 5.1 66 |19|VSSA|Voltage source: Ground
Mathias Larsen 9.1 67 |20|VREF|Voltage reference (Internal voltage refferance)
Mathias Larsen 5.1 68 |21|VDDA|Voltage source: Power (+3V3)
Mathias Larsen 7.4 69 |22|PB10|Digital output: LED 8
Mathias Larsen 5.1 70 |23|VSS|Voltage source: Ground
71 |24|VDD|Voltage source: Power (+3V3)
Mathias Larsen 7.1 72 |25|PB11|Current 1 Internal components
73 |26|PB12|Current 9 Supply 12 V Pumps inverter and datalogger 
Mathias Larsen 8.1 74 |29|PB15|PWM: enable fan 2
Mathias Larsen 13.1 75 |30|PA8|Digital output Enable buzzeer(On the car it is Brake light)
76 |31|PA9|(((
77 Digital output Enable brake light(On the car it is the buzzer)
78 )))
Mathias Larsen 7.4 79 |32|PA10|Input ASMS signal
Mathias Larsen 12.1 80 |33|PA11|CAN-BUS RXD
81 |34|PA12|CAN-BUS TXD
Mathias Larsen 5.1 82 |35|VSS|Voltage source: Ground
83 |36|VDD|Voltage source: Power (+3V3)
84 |37|PA13|SWDIO
85 |38|PA14|SWCLK
Mathias Larsen 9.2 86 |40|PB3|Digital output: LED 3
87 |41|PB4|Digital output: LED 4
88 |42|PB5|Digital output: LED 5
Mathias Larsen 10.1 89 |43|PB6|Digital output: Enable Pump 1
Mathias Larsen 9.2 90 |44|PB7|Digital output: Enable Pump 2
91 |45|PB8|Digital output: LED 6
Mathias Larsen 5.1 92 |46|PB9|LED 7
93 |47|VSS|Voltage source: Ground
94 |48|VDD|Voltage source: Power (+3V3)
Mathias Larsen 2.1 95
Mathias Larsen 14.22 96 == Digital outputs ' ==
Mathias Larsen 14.20 97
Mathias Larsen 14.22 98 3v3
99
100 24V
101
Mathias Larsen 14.21 102 == Current measurment ==
103
Mathias Larsen 17.1 104 == Known issues ==
Mathias Larsen 14.20 105
106 12 V did not work
107
Mathias Larsen 16.1 108 Current measurement not tested
109
110
Mathias Larsen 14.1 111 == Features to add ==
112
113 Add mosfets to cut power if the Lv battery is to low to save power
Mathias Larsen 16.1 114
115 Add a power distrobution for Autonomus system
Mathias Larsen 17.1 116
117
118 == BOM(bill of materials) ==
Mathias Larsen 19.1 119 |=Part Number|=Type|=Description|=Qty|=Item ID
120 |STM32G431CBT6|b|Microcontroller|1|1288-LV-00056
121 |01550900DR|b|Fuseholder for nanofuse2|9|1288-LV-00057
122 |0466.125NR|b|In-line fuse 125 mA|1|1288-LV-00058
123 |776231-1|b|Ampseal 35 pin connector|1|1288-LV-00059
124 |76829-0002|b|Mega Fit 2 pin connector|1|1288-LV-00060
125 |44914-0401|b|Mini Fit 4 pin connector|1|1288-LV-00061
126 |1461247-3|b|24VDC relay|1|1288-LV-00062
127 |BSS123NH6327XTSA1|b|Mosfet N-channel SOT-23|6|1288-LV-00063
128 |BSS83PH6327XTSA1|b|Mosfet P-channel SOT-23|2|1288-LV-00064
129 |BSC084P03NS3GATMA1|b|P-channel mosfet PG-TDSON-8-1|2|1288-LV-00065
130 |NCV7344D13R2G|b|CAN FD transceiver|1|1288-LV-00066
131 |INA4180A4IPWR|b|Current sense amplifier, quad channel|3|1288-LV-00067
132 |AP64060WU-7|b|Synchronous step-down converter|1|1288-LV-00068
133 |AP2112K-3.3TRG1|b|3.3V LDO, PDS05|1|1288-LV-00069
134 |TPS56A37RPAR|b|10A synchronous buck converter|3|1288-LV-00070
135 |ASE-8.000MHz-E-T|b|8MHz Oscillator|1|1288-LV-00071
136 |824094024|b|TVS diode, SOT-23-3L|1|1288-LV-00072
137 |824500261|b|TVS diode, DO-214AC|1|1288-LV-00073
138 |150282M167310|b|LED red/blue/green|9|1288-LV-00074
139 |WSLF25122L000FEA|b|Res Metal Strip, 2mΩ, 2512|9|1288-LV-00077
140 |CR0603-FX-1002ELF|b|SMD chip resistor, 10KΩ, 0603|22|1288-LV-00078
141 |PCB|m|Self-designed PCB|1|1288-LV-00171
142 |CR0805-JW-472ELF|b|SMD chip resistor, 4K7Ω, 0603|9|1288-LV-00189
143 |CR0603-FX-1001ELF|m|SMD chip resistor, 1KΩ, 0603|7|1288-LV-00190
144 |CRCW060352K3FKEA|b|SMD chip resistor, 52K3Ω, 0603|3|1288-LV-00192
145 |CRCW060320K0FKEA|m|SMD chip resistor, 20KΩ, 0603|3|1288-LV-00193
146 |ERJ-6ENF3833V|m|SMD chip resistor, 383KΩ, 0603|3|1288-LV-00194
147 |CRCW0603100KFKEA|m|SMD chip resistor, 100KΩ, 0603|3|1288-LV-00195
148 |RC0603FR-105K1L|m|SMD chip resistor, 5K1Ω, 0603|1|1288-LV-00207
149 |CRGCQ0603F27K|b|SMD chip resistor, 27KΩ, 0603|1|1288-LV-00208
150 |CR0603-FX-3480ELF|b|SMD chip resistor, 348Ω, 0603|9|1288-LV-00216
151 |CC0603KRX5R6BB475|m|MLCC SMD, 4.7µF, 0603|1|1288-LV-00227
152 |CL10B104KA8NNNC|m|MLCC SMD, 100nF, 0603|9|1288-LV-00228
153 |CL10B105KA8NFNC|m|MLCC SMD, 1µF, 0603|2|1288-LV-00229
154 |CL10B103KB8NNNC|m|MLCC SMD, 10nF, 0603|10|1288-LV-00230
155 |885012206020|m|MLCC SMD, 100nF|2|1288-LV-00231
156 |885012006051|m|MLCC SMD, 10pF|2|1288-LV-00232
157 |885012208124|m|MLCC SMD, 2.2µF, 0603|2|1288-LV-00233
158 |885012108022|m|MLCC SMD, 10µF, 0603|1|1288-LV-00234
159 |885012206071R|m|MLCC SMD, 100nF, 0603|1|1288-LV-00235
160 |885012107014|m|MLCC SMD, 10µF, 0804|2|1288-LV-00236
161 |MBASU105SB5104KFNA01|m|MLCC SMD, 100nF, 0402|2|1288-LV-00237
162 |885012209073|m|MLCC SMD, 2.2µF, 1210|6|1288-LV-00238
163 |885012207098R|m|MLCC SMD, 100nF, 0805|3|1288-LV-00239
164 |885012206042|m|MLCC SMD, 22nF, 0603|3|1288-LV-00240
165 |885012206046|m|MLCC SMD, 100nF, 0603|3|1288-LV-00241
166 |C0603C300F3HACAUTO|b|MLCC SMD, 30pF, 0603|3|1288-LV-00242
167 |885012208069|m|MLCC SMD, 10µF, 1206|9|
168