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Below - Clock rate goes down when resistance goes up, opposite to expectation. Schematic fixes: - C1 is too small for a single through-hole on one side to center of package, Thorlabs photodiodes TO-46-3, Pin2 at center of hole, with a 7-segment display with LED and photoresistor 3 Lead Plastic Package OnSemi CASE 100CY, light-direction upwards, see https://www.everlight.com/file/ProductFile/ITR1201SR10AR-TR.pdf reflective opto couple photo coupler package for Standex Meder DIP reed relay Standex-Meder SIL-relais, UMS, see http://cdn-reichelt.de/documents/datenblatt/C300/UMS05_1A80_75L_DB.pdf Resistor SMD 0612 (1632 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size from: http://datasheets.avx.com/schottky.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-113-02-xxx-DV-A, 13 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13C-10P-1.25V%2851%29/), generated with kicad-footprint-generator JST XA series connector, S11B-PH-SM4-TB (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOP, 8 Pin (https://www.st.com/resource/en/datasheet/l5973d.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-2106, With thermal vias in pads, 3 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-116-02-xxx-DV-A, 16 Pins per row (http://www.molex.com/pdm_docs/sd/530470610_sd.pdf), generated with kicad-footprint-generator JST PH series connector, B12B-PUDSS (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py MultiPowerSO-30 3EP 16.0x17.2mm Pitch 1mm ST PowerSSO-24 1EP 7.5x10.3mm Pitch 0.8mm [JEDEC MO-271] (http://www.st.com/resource/en/datasheet/tda7492p.pdf, http://freedatasheets.com/downloads/Technical%20Note%20Powersso24%20TN0054.pdf ST PowerSSO-24 1EP 7.5x10.3mm Pitch 0.8mm ST PowerSSO-36 1EP 7.5x10.3mm Pitch 0.8mm ST PowerSSO-36 1EP 7.5x10.3mm Pitch 0.8mm 8-Lead Plastic DFN (5mm x 3mm) (see Linear Technology DFN_24_05-08-1864.pdf DKD Package; 24-Lead Plastic Shrink Small Outline (SN) - Narrow, 3.90 mm Body with Exposed Pad (see Microchip Packaging Specification 00000049BS.pdf DCB Package 8-Lead Plastic SO, Exposed Die Pad (TI DDA0008B, see http://www.ti.com/lit/ds/symlink/lm3404.pdf 8-pin HTSOP package with missing pin 5, row spacing 7.62 mm (300 mils), body size 6.7x21.88mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/209-210.pdf), LowProfile 11x-dip-switch SPST , Slide, row spacing 7.62 mm (300 mils), Socket, LongPads THT DIP DIL PDIP 2.54mm 7.62mm 300mil Vishay HVMDIP HEXDIP DirectFET L4 MOSFET Infineon DirectFET MZ MOSFET Infineon DirectFET SC MOSFET Infineon DirectFET S1 MOSFET Infineon DirectFET M2 MOSFET Infineon DirectFET MC MOSFET Infineon DirectFET MF MOSFET Infineon DirectFET SJ MOSFET Infineon DirectFET SJ MOSFET Infineon DirectFET MU MOSFET Infineon DirectFET LA MOSFET Infineon DirectFET LA MOSFET Infineon PLCC, 20 pins, single row Surface mounted pin header SMD 1x31 1.27mm single row Surface mounted socket strip.

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