This series of three pound combat robots feature field swappable weapon attachments. This allows matching the weapon type to the opponent.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixrH7EncLzB-bCjYx9qA2XsdaHyrId_YZc2Wo9jgRYyD1cQivkPeHkAsMip-x_u_6NHIaR13PqJ_Wk8zV-G76BqaSsc-zP7TZTVYXDu5BCMJinYFPUed20POrLTEo5Jl-P9NvskrzUq3yo/s400/2017-02-15+22.02.49.jpg) |
Dinner Time with its three attachments. |
Dinner Time was the first modular robot I made, with three different attachments. There was an undercutter, for use against drum types, certain types of wedges, and overhead bars. A vertical spinner is used for most wedge type robots, including vertical spinning weapons with feeder wedge. Finally, an elevated horizontal spinner (over-undercutter) is used against mid-cutters and undercutters. This robot competed in Motorama 2017, winning first place.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzY-PUFH69JYU60RrspTZf4V8708PYFS8XGidjvg_D7XuNoiIqZeLcnO7GgekvboWcOJbz-Et9jvTNGrgsEztoo_SrBXCehhBWmQ-Gat2todtVBqqviOYNTPzFPALfek4iV5Dv-IHGnD_v/s320/2017-02-14+20.08.56.jpg) |
The "over-undercutter". |
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEihL8REd2RkVXBQXF4eIJfL_9-jdqCgqHTR-PWEI5xtSlPB4rK_C_cvvyrRdbQ_ei4u3bOF5pQrCLrTSSibsD_Oijy7gBxzi4w2RBj3blhIfcAYyJEGRFwowV4n2_VLx7KEdiHuLugr2qKV/s320/IMG_0980.JPG) |
Margin of Safety 4 with undercutter. |
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Margin of Safety 4 with vertical spinner. |
For continuity the Margin of Safety name was restored. This one features a full 3D printed frame and connectorized attachments. Modules could be swapped in 30 seconds, allowing races with other modular robots on who gets the weapon type advantage. The over-undercutter attachment was put on hold due to weight issues. This one won Dragoncon 2017 and Dragoncon's Tea Cup Racers.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEglAXvzbZh8dszY9vdoOO66sLjZi_CPFLtubrJEVgJR-YKkFNC_UxTcMGGoB_j8OfnCk-eBUKD4XHdtBAoVbCXu2G062stTBSEOrgHIQuWN6GyiMx_zQzkv1WTDwdsCaHpvgn-88Oi1HOVT/s320/2017-09-02+13.40.46.jpg) |
In tea serving form. |
The vertical weapon was redesigned and a new "horizontal drum" attachment made for Sparkfun AVC 2017. It won first place.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvdYc5ipfDH4wiCYp7pQJh0ey1D9tsa_uHPzgeJR4O-OquzebLouHOt-H43JdjkAm_1ayZVOfNv2TU-sOtrnMmpYFJLQGyemuYayevL1Cl5VOepbZbe3uNMBXtKklF2TmwZicxYd-FQ0b1/s320/2017-10-13+20.35.34.jpg) |
With horizontal drum attachment. |
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All available attachments. The new horizontal and vertical drums are shown without hardened drum installed. |