Eval » Historie » Version 13
Maximilian Seesslen, 22.08.2023 16:48
| 1 | 1 | Maximilian Seesslen | h1. Eval |
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| 3 | CANDis is quite silent. |
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| 5 | CANBuz probably will have same issues. Need to test capacitors. |
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| 6 | 6 | Maximilian Seesslen | F=As/V |
| 7 | qalc 0,000022*3 = 0,000066 = 0,066mAs |
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| 8 | Ich hab doch noch grosse |
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| 9 | 12 | Maximilian Seesslen | Is it the power regulator/LDO? What did i solder? |
| 10 | 1 | Maximilian Seesslen | |
| 11 | h2. Parts |
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| 12 | |||
| 13 | 3 | Maximilian Seesslen | * LM386; "DS":https://www.ti.com/lit/ds/symlink/lm386.pdf ; page 10 |
| 14 | 13 | Maximilian Seesslen | * LM4861 M; 1,39€ |
| 15 | ** can be driven @5V; not sure if V+ has to be 3v/2 or 5v/2 ? |
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| 16 | ** Shutdown: power output off on logic high |
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| 18 | 2 | Maximilian Seesslen | |
| 19 | h2. MCU |
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| 20 | |||
| 21 | 4 | Maximilian Seesslen | * STM32F042G4U6; UFQFPN28; 16KB; hab ich noch 17 |
| 22 | 9 | Maximilian Seesslen | * Get rid of an STM32F072 in order to have DAC? |
| 23 | * STM32G431KBU6 |
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| 24 | 5 | Maximilian Seesslen | |
| 25 | h2. DAC |
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| 27 | 11 | Maximilian Seesslen | * Maybe later; SAI would be more interesting. DAC for testing DMA. |
| 28 | 7 | Maximilian Seesslen | * 44,100 Hz |
| 29 | * Would require SPI flash for recorded sound |
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| 30 | 8 | Maximilian Seesslen | * Adjustable volume |
| 31 | 10 | Maximilian Seesslen | * Solderbridge for fallback |