{"product_id":"skr-mini-e3-v2-0-thermistor-expander","title":"SKR Mini E3 V2.0 Thermistor Expander by Timmit99","description":"\u003cp\u003e\u003cstrong\u003eAdd two thermistor inputs to a BTT SKR Mini E3 using the TFT header.\u003c\/strong\u003e This Timmit99 \/ Voron-Hardware expander gives SKR Mini E3 V1.2, V2.0, and V3.0 boards two additional temperature-sensor channels for Klipper builds without giving up the EXP1 or SPI display headers.\u003c\/p\u003e\n\u003ch3\u003eWhy use this board\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAdds two extra thermistor channels for chamber, electronics-bay, exhaust, or spare temperature monitoring.\u003c\/li\u003e\n  \u003cli\u003eUses the SKR Mini E3 TFT header: T0 on TX2 \/ PA2 and T1 on RX2 \/ PA3.\u003c\/li\u003e\n  \u003cli\u003eDesigned to pair cleanly with the \u003ca href=\"https:\/\/dfh.fm\/products\/skr-mini-v1-v2-screen-adaptor-by-timmit99\"\u003eSKR Mini v1\/v2 screen adaptor by Timmit99\u003c\/a\u003e when the EXP1 and SPI headers are already committed to a display.\u003c\/li\u003e\n  \u003cli\u003eWorks with Klipper's standard \u003ccode\u003e[temperature_sensor]\u003c\/code\u003e configuration; boards with 4.7K pullups use Klipper's default pullup value.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProject:\u003c\/strong\u003e Voron-Hardware SKR-Mini TFT Thermistor Board by Timmit99.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible control boards:\u003c\/strong\u003e BIGTREETECH SKR Mini E3 V1.2, V2.0, and V3.0.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermistor inputs:\u003c\/strong\u003e two channels, T0 and T1.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin mapping:\u003c\/strong\u003e T0 = TX2 \/ PA2; T1 = RX2 \/ PA3.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePullup:\u003c\/strong\u003e standard design uses \u003cstrong\u003e4.7K\u003c\/strong\u003e pullups, matching Klipper's default.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnectors:\u003c\/strong\u003e two 2-pin JST-XH thermistor sockets, 5-pin 2.54mm Dupont TFT-header connector, and 1-pin 3.3V jumper pin.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e assembled thermistor expander PCB.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment and setup notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse it when your SKR Mini E3 build needs more temperature inputs than the mainboard provides, especially Voron V0 \/ Ender-style Klipper conversions with chamber or electronics-bay sensing.\u003c\/li\u003e\n  \u003cli\u003ePair it with a \u003ca href=\"https:\/\/dfh.fm\/products\/thermistor-100k-ohm-ntc-3950\"\u003e100K NTC 3950 thermistor\u003c\/a\u003e or other Klipper-supported thermistor as needed; thermistors are not included with this board.\u003c\/li\u003e\n  \u003cli\u003eInstall with the board on the TFT header and run the single 3.3V jumper to the SKR Mini E3 SWD 3.3V pin per the Voron-Hardware installation notes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKlipper gotcha\u003c\/h3\u003e\n\u003cp\u003eCheck the resistor markings on your board before final configuration. If the resistor is marked \u003cstrong\u003e4701\u003c\/strong\u003e, use Klipper's default pullup. If it is marked \u003cstrong\u003e1001\u003c\/strong\u003e, add \u003ccode\u003epullup_resistor: 1000\u003c\/code\u003e in that \u003ccode\u003e[temperature_sensor]\u003c\/code\u003e section.\u003c\/p\u003e\n\u003cpre\u003e\u003ccode\u003e[temperature_sensor chamber]\nsensor_type: Generic 3950\nsensor_pin: PA2\n# pullup_resistor: 1000  # only if the board resistor is marked 1001\u003c\/code\u003e\u003c\/pre\u003e\n\u003ch3\u003eWhat it is not\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNot a standalone MCU, CAN board, heater expander, fan expander, or RTD amplifier.\u003c\/li\u003e\n  \u003cli\u003eNot a replacement for the broader \u003ca href=\"https:\/\/dfh.fm\/products\/klipper-expander-for-voron-3d-printers\"\u003eKlipper Expander by Timmit99\u003c\/a\u003e if you also need MOSFET outputs or a separate Klipper MCU.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\u003cp\u003e“Works on the SKR Mini E3 V3.0 as well. Currently using this successfully on my V0.”\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"dfh.fm","offers":[{"title":"Default Title","offer_id":40813440008361,"sku":"4296906398","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/Image7-8-21at8.08PM_0.5x.jpg?v=1640946693","url":"https:\/\/formosissima.myshopify.com\/products\/skr-mini-e3-v2-0-thermistor-expander","provider":"dfh.fm","version":"1.0","type":"link"}