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reflow-oven-control-pcb
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85 Commits

Author SHA1 Message Date
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 2ac81f1fed Add shimatta_analog library for new opamp 2020-02-06 19:37:24 +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 05981966dc Merge branch 'master' of git.shimatta.de:pcb/reflow-oven-control-pcb 2020-02-05 18:37:28 +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 7b0e516c1e v1.2 gerber output 2020-01-12 16:09:39 +01:00
Mario Hüttel 0bf2bfe5f0 generate gerbers fpr V1.2 2020-01-12 16:02:03 +01:00
Mario Hüttel 561c984ba9 Finalize layout and make smaller component value changes 2020-01-12 16:00:29 +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 dda1209659 Remove INA126 because it doesn't work in this configuration. Replace by old subtractor circuit 2020-01-11 20:22:02 +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 b529535ae8 Schematic: Re-annotate everything 2020-01-03 20:05:39 +01:00
Mario Hüttel 4e5bc3bae7 Schmatic: Improve layout in schematic 2020-01-03 20:04:57 +01:00
Mario Hüttel ea05b0885b Add references for components 2020-01-03 18:45:37 +01:00
Mario Hüttel 6546664939 Revert "Schematic: Redo component annotations" 
This reverts commit 458f3d9769.

* Changing annotations and propagating the changes to the board are not possible anymore
 2020-01-03 18:42:32 +01:00
Mario Hüttel 458f3d9769 Schematic: Redo component annotations 2020-01-03 18:38:16 +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
Mario Hüttel 2c4c15e72b Replace custom opamp circuit with INA126 instrumentation amp 2020-01-02 00:08:09 +01:00
Mario Hüttel f415c9b838 Update transformer footprint 2019-12-29 23:40:30 +01:00
Mario Hüttel 0559a624bc Moved stuff 2019-12-27 21:36:56 +01:00
Mario Hüttel a307557a41 Improved layout, Add QR code, Add external ADC option for 22 bit ADC 2019-12-26 18:01:55 +01:00
Mario Hüttel fe646769e7 Schematic beautify and layout improvments, Length matching for SDIO 2019-12-25 19:15:32 +01:00
Mario Hüttel c8e420bd08 Played around 2019-12-25 01:19:01 +01:00
Mario Hüttel 971a1e7c1a Include light guides for LEDs 2019-12-25 00:36:35 +01:00
Mario Hüttel 34c84c6cf8 Add prozessorkern's Kicad libraries for Light guide for LEDs 2019-12-25 00:21:00 +01:00
Mario Hüttel a698e0b0e5 Add temperature sensor to PCB for compensation calculation. 2019-12-25 00:20:13 +01:00
Mario Hüttel c211cf659b Newest changes in schematic and a preliminary complete layout 2019-12-23 22:25:38 +01:00
Mario Hüttel 585ef85fab PCB rework started 2019-10-02 14:12:33 +02:00
Mario Hüttel 93ec69fa19 Fisrt draft. Will be reworked 2019-09-22 18:42:43 +02:00