Eval » Historie » Version 20
Maximilian Seesslen, 06.10.2025 16:09
| 1 | 1 | Maximilian Seesslen | h1. Eval |
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| 3 | 11 | Maximilian Seesslen | "https://www.seesslen.net/redmine/projects/slonce/wiki/Office":See |
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| 5 | 8 | Maximilian Seesslen | h2. New Features compared to Mainswitch/CANSwitch |
| 6 | 1 | Maximilian Seesslen | |
| 7 | * More current |
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| 8 | * Fix Wakeup |
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| 9 | 6 | Maximilian Seesslen | ** Beim Mainswitch gab der Power-button einen Stromimpuls auf den ACQxxx und auf einen GPIO. Wenn das system von extern gespest wurde und die MCU schlafen war, konnte sie nicht wieder aufgewekt werden. |
| 10 | 1 | Maximilian Seesslen | * Periodic wakeups to make measurements: RTC |
| 11 | 8 | Maximilian Seesslen | ** RTC_OUT gibt spannung auf den ENABLE des |
| 12 | 1 | Maximilian Seesslen | * Diode ? Voltage-Drop issue |
| 13 | ** Ideal diode with Mosfet |
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| 14 | * High voltage (24V) ? |
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| 15 | ** Different connectors |
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| 16 | * Global Timeserver; It already has batteries |
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| 17 | * Real touch keys |
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| 18 | 18 | Maximilian Seesslen | ** Why? In addition to increase illumination. But thats what candis was for. |
| 19 | 1 | Maximilian Seesslen | * Over-Temperature power off (PCB/Box) |
| 20 | * Buzzer? |
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| 21 | ** indicate peridoc on/off during day time |
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| 22 | 8 | Maximilian Seesslen | * External Solid State Relais for high power switching like Horo |
| 23 | 1 | Maximilian Seesslen | |
| 24 | * 4 Sectionen: SZ, WZ, MEMS, ? |
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| 25 | ** Stoeren ungepowerte Platinen CAN? |
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| 26 | 2 | Maximilian Seesslen | ** Erzwingt Sternkonstelation |
| 27 | 1 | Maximilian Seesslen | |
| 28 | h2. Components |
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| 29 | |||
| 30 | Ideal Diode: |
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| 31 | |||
| 32 | * VN7140ASTR; up to 0,280 ohm, 0,120 Ohm typical |
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| 33 | * LTC4412; 2,9V; TME 2.60EUro; External P-MOSFET needed; Waere perfekt gewesen; load sharing |
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| 34 | * TPS2410 N.A. |
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| 35 | * LM5050 |
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| 36 | * MAX40200; 1A only, no external MOSFET |
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| 37 | 8 | Maximilian Seesslen | * LM74700; 1.27€; perfekt; load sharing |
| 38 | 1 | Maximilian Seesslen | |
| 39 | 4 | Maximilian Seesslen | --LTC4412 is the only available-- |
| 40 | 1 | Maximilian Seesslen | |
| 41 | TMP1075; TMP1075NDRLR; 0,31€ |
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| 42 | Muesste noch viel rumliegen haben |
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| 43 | 4 | Maximilian Seesslen | |
| 44 | 1 | Maximilian Seesslen | |
| 45 | h2. Calculations |
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| 46 | |||
| 47 | * 240V/600mA eigentlich ausreichend; 144W |
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| 48 | * AQH3213A |
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| 49 | * STM32F030K6T6 should draw 20µA in stop |
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| 50 | * 700mAh=700000µAh |
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| 51 | * 700000µAh/20µA=3500h=1458d=ca 4 years |
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| 52 | |||
| 53 | h2. MCU |
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| 54 | |||
| 55 | * "Find":https://www.tme.eu/de/katalog/st-mikrocontroller_112866/?params=375:1453589,1453450,1853043,1634756,1634761,1938598,1473784,1613924;3461:1979124,1979125 |
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| 56 | * STM32F072C8T6 |
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| 57 | ** 2V, ok, Entladeaschlussspannung |
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| 58 | ** Nur LQFP48; 4.53Euro |
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| 59 | ** 1,85 € Reichelt STM32F072CBT6 128KB Flash |
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| 60 | 7 | Maximilian Seesslen | ** RTC_OUT out PC13 |
| 61 | 1 | Maximilian Seesslen | * STM32H503CBT6, "STM32H503KBU6":https://www.tme.eu/Document/e92fcde7cdebb20ebbd5639f57dc7863/stm32h503cb.pdf |
| 62 | ** 3.20Euro |
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| 63 | * Fuer VBAT wird beim STM32H503KBU6 auch FQFP48 benoetigt. |
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| 64 | 8 | Maximilian Seesslen | |
| 65 | h2. Number of LED drivers |
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| 66 | 7 | Maximilian Seesslen | |
| 67 | 12 | Maximilian Seesslen | Living room has 4 lamps, maybe 6 later. |
| 68 | 10 | Maximilian Seesslen | |
| 69 | 1 | Maximilian Seesslen | h2. Issues |
| 70 | |||
| 71 | h3. Wie Straenge schalten |
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| 72 | |||
| 73 | * 4 x LTC4412 umstaendlich, E.g. status ruecklesen |
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| 74 | * Jeweils 2 Mosfets notwendig um zu isolieren, klein + gross |
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| 75 | 16 | Maximilian Seesslen | * Wozu Stränge? 2 direkt verbundene Buchsen reichen nicht? Auch nur um sich allenfalls Verteiler zu sparen. |
| 76 | |||
| 77 | h3. USB interface? |
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| 78 | |||
| 79 | * Usable with Raspberry or so. |
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| 80 | |||
| 81 | 13 | Maximilian Seesslen | h3. Light optional |
| 82 | |||
| 83 | * Media does not need light. The name is "helios". Use CANSwitch then. |
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| 84 | 15 | Maximilian Seesslen | * But having the regulators in batteries is nice. They work even without MCU board. |
| 85 | |||
| 86 | * 4xPWM |
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| 87 | * 2xTerminals; IN+OUT |
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| 88 | 1 | Maximilian Seesslen | * Switch can be done on helios, only for first block |
| 89 | 17 | Maximilian Seesslen | ** If the switch is also on the blocks, Single power supply can be used |
| 90 | 20 | Maximilian Seesslen | ** Do i really have multiple power supplys for different LEDs? Could be, an active one for High power and an small one for nice ambience. |
| 91 | 1 | Maximilian Seesslen | * Must not connect Grounds of different power supplys |
| 92 | 17 | Maximilian Seesslen | |
| 93 | Das mit IDC oder aehnlichem zu machen klingt nice. Dann gehen theoretisch 4x4 (4xNetzteile schalten), man braucht 'nur' 4xPWM, Kaskadierung. |
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| 94 | Alternativ 'addresse' einstellbar. Dann ist man noch flexibler, e.g. |
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| 95 | 8 x kalt, 8 x warm. |
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| 96 | 8 x Zimmer, 4 x Tisch. |
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| 97 | 1 | Maximilian Seesslen | |
| 98 | 18 | Maximilian Seesslen | Kabel: 4xPWM, 4xSwitch VDD, GND -> 10P |
| 99 | 19 | Maximilian Seesslen | |
| 100 | DIP-Switches: DS04254204BKSMT |