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61 Commits

Author SHA1 Message Date
Mario Hüttel e94caf501d Convert project to kicad 6 2021-12-30 13:59:02 +01:00
Mario Hüttel 1dce60fe12 Export for v1.3.1 2021-10-27 22:21:18 +02:00
Mario Hüttel b166789cde Fixup silkscreen 2021-10-27 21:37:28 +02:00
Mario Hüttel 5cf8083ce2 Export v1.3.1 2021-10-24 22:10:30 +02:00
Mario Hüttel f770baca2e Finalize v1.3.1 2021-10-24 22:00:41 +02:00
Mario Hüttel 2df88f8fab chenge PCB version detect pin config to v1.3.1 2021-10-24 21:55:00 +02:00
Mario Hüttel 912c709c97 Finalize v1.3.1 2021-10-23 19:57:56 +02:00
Mario Hüttel ba7c416b31 Prepare corrected version 2021-10-03 18:42:27 +02:00
Mario Hüttel 222aecb8a1 Remove GND island from buck regulator. It is probably useless. 2021-03-09 19:34:01 +01:00
Mario Hüttel c0f3b502cc Update PCB a little to contain correct 3d models 2021-01-16 21:59:38 +01:00
Mario Hüttel d1638154a6 Merge Earth and GND nets 2021-01-07 00:02:41 +01:00
Mario Hüttel 27083b6825 Change capacitor types to higher rated voltage because the bigger input transformer has a very high voltage due to the low load. 2021-01-06 23:40:29 +01:00
Mario Hüttel e93ca5a4b5 Add 3d model for inductor and use 22uF caps instead of 10uF. This enahnces performance drastically 2021-01-05 18:46:03 +01:00
Mario Hüttel dc5df82872 Exported v1.3 for production 2020-12-13 19:28:33 +01:00
Mario Hüttel 2f53449877 Export gerbers 2020-12-13 18:50:32 +01:00
Mario Hüttel f1de06b8b1 Improve layout 2020-12-13 18:33:35 +01:00
Mario Hüttel 2e74573cce Improve layout 2020-12-13 18:28:34 +01:00
Mario Hüttel 0bbcc5e8b6 Improve layout 2020-12-13 18:04:26 +01:00
Mario Hüttel 219fa3e0d6 Improve frontend and improved layout 2020-12-12 23:15:10 +01:00
Mario Hüttel 71beb1af39 Update buzzer footprint to include 3d model 2020-12-08 19:20:57 +01:00
Mario Hüttel e0fe68342c Add additional VDD monitoring 2020-12-07 00:44:25 +01:00
Mario Hüttel aeb30f0e8b Change 5V regulator to cheaper type 2020-12-06 20:18:50 +01:00
Mario Hüttel 3ce57d6c53 Change components 2020-12-06 17:46:38 +01:00
Mario Hüttel c8b7802314 v1.3 finished preliminary layout 2020-12-05 18:58:28 +01:00
Mario Hüttel ffef1886d1 Improve layout 2020-11-27 23:23:40 +01:00
Mario Hüttel 1375a5c914 Reannotate components 2020-11-27 22:26:34 +01:00
Mario Hüttel c932da7d41 First draft of v1.3 schematic and layout 2020-11-27 22:22:05 +01:00
Mario Hüttel e6905a50d2 remove onewire Temp sensor 2020-07-05 18:24:38 +02:00
Mario Hüttel b0ceb0adb7 Add 3d Models to repo 2020-07-05 18:17:55 +02:00
Mario Hüttel bcc4ae3126 Add git url 2020-02-18 20:51:03 +01:00
Mario Hüttel 6f93679416 Add vias to erath net 2020-02-18 20:45:31 +01:00
Mario Hüttel c35760c5dd Export gerbers with tented vias 2020-02-18 20:40:21 +01:00
Mario Hüttel e60811b49b add GND points near test points to get good ground connection 2020-02-18 20:37:26 +01:00
Mario Hüttel 3629ac7581 layout improvements 2020-02-18 20:25:29 +01:00
Mario Hüttel 9da3edbf16 Re-enumerate components. This finilizes draft version for V1.2 2020-02-18 20:19:59 +01:00
Mario Hüttel c7b61d2e06 remove selectable voltage level for level shifter on LCB bus. This does not work 2020-02-18 20:12:22 +01:00
Mario Hüttel adf0a2afb9 Improve ESD protection of DIGIO Pins 2020-02-17 20:40:35 +01:00
Mario Hüttel f1897d8342 Improve schematic and corresponding layout 2020-02-16 00:10:01 +01:00
Mario Hüttel a67ada8ddf Rework stability compensation of opamp 2020-02-06 21:36:27 +01:00
Mario Hüttel 20780781e9 Replace all MCP6V31U with MCP6V34. It's cheaper. 2020-02-06 19:49:54 +01:00
Mario Hüttel daeb2a7721 Move vias to better locations: These vias have proven unfortunately placed for hand soldering 2020-02-05 22:12:31 +01:00
Mario Hüttel d894012b73 Re-annotate components 2020-02-05 18:58:36 +01:00
Mario Hüttel fa6782c21d Prepare for v1.2 
* Remove voltage buffer Opamp after TL431PK because it may oscillate
* Replace TL431PK with TL431LI. Stabilized by very large capacitance (> 10uF)
* Add panic passives to differential amplifier in order to avoid oscillaton. Values as they are now should work.
* Remove external ADC. Tests with version v1.1 show that the precision of the STM's ADC is sufficient, (once all oscillations are damped by modifying the circuit)
* Power whole OpAmp circuit with 3.3 volts in order to eliminate the need for the clamping diode at the ADC pin. This diode showed a high reverse current over temperature, which affected the measurement.
 2020-02-05 18:30:34 +01:00
Mario Hüttel ae4c0afbf9 Improve layout, change color of B.Silk and improve schematic 2020-01-12 14:56:58 +01:00
Mario Hüttel 103550b2da Layout opamp changes. Remove INA126 and put in 3 standard opamps instead 2020-01-11 20:58:21 +01:00
Mario Hüttel f895e84418 fix sym lib table and refill zones 2020-01-04 20:52:22 +01:00
Mario Hüttel 3c9929bcd6 Finalize version v1.0 2020-01-03 21:26:29 +01:00
Mario Hüttel 6806a29e54 Add solder jumpers for connection between Earth and GND 2020-01-03 20:39:53 +01:00
Mario Hüttel cff848f02f Small fixes and improvements 
* Card detect pin used
* Fix SD card slot
* Improve routing and via placement
 2020-01-03 18:34:21 +01:00
Mario Hüttel 3bba68b615 Improve layout 2020-01-02 00:17:38 +01:00