Eval » Historie » Version 16
Maximilian Seesslen, 06.10.2025 14:50
| 1 | 1 | Maximilian Seesslen | h1. Eval |
|---|---|---|---|
| 2 | |||
| 3 | 11 | Maximilian Seesslen | "https://www.seesslen.net/redmine/projects/slonce/wiki/Office":See |
| 4 | |||
| 5 | 8 | Maximilian Seesslen | h2. New Features compared to Mainswitch/CANSwitch |
| 6 | 1 | Maximilian Seesslen | |
| 7 | * More current |
||
| 8 | * Fix Wakeup |
||
| 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 |
||
| 14 | * High voltage (24V) ? |
||
| 15 | ** Different connectors |
||
| 16 | * Global Timeserver; It already has batteries |
||
| 17 | * Real touch keys |
||
| 18 | * Over-Temperature power off (PCB/Box) |
||
| 19 | * Buzzer? |
||
| 20 | ** indicate peridoc on/off during day time |
||
| 21 | 8 | Maximilian Seesslen | * External Solid State Relais for high power switching like Horo |
| 22 | 1 | Maximilian Seesslen | |
| 23 | * 4 Sectionen: SZ, WZ, MEMS, ? |
||
| 24 | ** Stoeren ungepowerte Platinen CAN? |
||
| 25 | 2 | Maximilian Seesslen | ** Erzwingt Sternkonstelation |
| 26 | 1 | Maximilian Seesslen | |
| 27 | h2. Components |
||
| 28 | |||
| 29 | Ideal Diode: |
||
| 30 | |||
| 31 | * VN7140ASTR; up to 0,280 ohm, 0,120 Ohm typical |
||
| 32 | * LTC4412; 2,9V; TME 2.60EUro; External P-MOSFET needed; Waere perfekt gewesen; load sharing |
||
| 33 | * TPS2410 N.A. |
||
| 34 | * LM5050 |
||
| 35 | * MAX40200; 1A only, no external MOSFET |
||
| 36 | 8 | Maximilian Seesslen | * LM74700; 1.27€; perfekt; load sharing |
| 37 | 1 | Maximilian Seesslen | |
| 38 | 4 | Maximilian Seesslen | --LTC4412 is the only available-- |
| 39 | 1 | Maximilian Seesslen | |
| 40 | TMP1075; TMP1075NDRLR; 0,31€ |
||
| 41 | Muesste noch viel rumliegen haben |
||
| 42 | 4 | Maximilian Seesslen | |
| 43 | 1 | Maximilian Seesslen | |
| 44 | h2. Calculations |
||
| 45 | |||
| 46 | * 240V/600mA eigentlich ausreichend; 144W |
||
| 47 | * AQH3213A |
||
| 48 | * STM32F030K6T6 should draw 20µA in stop |
||
| 49 | * 700mAh=700000µAh |
||
| 50 | * 700000µAh/20µA=3500h=1458d=ca 4 years |
||
| 51 | |||
| 52 | h2. MCU |
||
| 53 | |||
| 54 | * "Find":https://www.tme.eu/de/katalog/st-mikrocontroller_112866/?params=375:1453589,1453450,1853043,1634756,1634761,1938598,1473784,1613924;3461:1979124,1979125 |
||
| 55 | * STM32F072C8T6 |
||
| 56 | ** 2V, ok, Entladeaschlussspannung |
||
| 57 | ** Nur LQFP48; 4.53Euro |
||
| 58 | ** 1,85 € Reichelt STM32F072CBT6 128KB Flash |
||
| 59 | 7 | Maximilian Seesslen | ** RTC_OUT out PC13 |
| 60 | 1 | Maximilian Seesslen | * STM32H503CBT6, "STM32H503KBU6":https://www.tme.eu/Document/e92fcde7cdebb20ebbd5639f57dc7863/stm32h503cb.pdf |
| 61 | ** 3.20Euro |
||
| 62 | * Fuer VBAT wird beim STM32H503KBU6 auch FQFP48 benoetigt. |
||
| 63 | 8 | Maximilian Seesslen | |
| 64 | h2. Number of LED drivers |
||
| 65 | 7 | Maximilian Seesslen | |
| 66 | 12 | Maximilian Seesslen | Living room has 4 lamps, maybe 6 later. |
| 67 | 10 | Maximilian Seesslen | |
| 68 | 1 | Maximilian Seesslen | h2. Issues |
| 69 | |||
| 70 | h3. Wie Straenge schalten |
||
| 71 | |||
| 72 | * 4 x LTC4412 umstaendlich, E.g. status ruecklesen |
||
| 73 | * Jeweils 2 Mosfets notwendig um zu isolieren, klein + gross |
||
| 74 | 16 | Maximilian Seesslen | * Wozu Stränge? 2 direkt verbundene Buchsen reichen nicht? Auch nur um sich allenfalls Verteiler zu sparen. |
| 75 | |||
| 76 | h3. USB interface? |
||
| 77 | |||
| 78 | * Usable with Raspberry or so. |
||
| 79 | |||
| 80 | 13 | Maximilian Seesslen | |
| 81 | h3. Light optional |
||
| 82 | |||
| 83 | * Media does not need light. The name is "helios". Use CANSwitch then. |
||
| 84 | 15 | Maximilian Seesslen | * But having the regulators in batteries is nice. They work even without MCU board. |
| 85 | |||
| 86 | * 4xPWM |
||
| 87 | * 2xTerminals; IN+OUT |
||
| 88 | * Switch can be done on helios, only for first block |
||
| 89 | * Must not connect Grounds of different power supplys |