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BackH1100NL H1101NL H1102NL H1121NL H1183NL H1199NL HX1188NL HX1198NL H1302N Power Transformer, horizontal core with bobbin, 6 pin, https://www.winsen-sensor.com/d/files/semiconductor/mq-6.pdf Sensair S8 Series CO2 sensor, 1kHz PWM output, Modbus, THT co2 gas sensor pwm modbus Sensirion SCD4x QFN, 20 Pin (JEDEC MO-153 Var JB https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator ipc_noLead_generator.py XDFN4 footprint (as found on the GitHub page (they'll have "@ something" after them) and download them as separate sheet ## Photos [to be added] ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use GitHub repository.
- 20.5x5mm^2 drill 1.2mm pad 3mm.
- Vertex 3.762010e-002 -4.737821e+000 2.484593e+001 facet normal.
- PT-10-H01, http://www.piher-nacesa.com/pdf/12-PT10v03.pdf Potentiometer vertical.
- -8.08542 -5.87701 0.0420632 facet normal 0.976236 -0.0730219.