I got it working pretty well with a timer, although it's only really viable with a sampler for one-shots. The noteOff just doesn't work. Had a lot of trouble with panel buttons not responding to the timer, disappointed about that, instead I hide one million buttons behind the UI smh. Maybe someone can figure it out. But this is something, definitely usable for a drum-machine.
Oh and forgive me for the mess that my code probably is, still learning
With UI
HiseSnippet 3230.3oc6bs2baabDGTRvIRMwMISlosyz+3hZmLjQRr7MkB8CJpGNp1xRQT1IoZbbg.NRdQf.b..kDSFMim9QneR5GA++86Q+67MncW7f3.H.krfMXxLEi8Ib2s6d+t81a2Eu3gF5xTSScCgLKd7nATgLefX6QZV81pmDSSXusEx7GDeLczo5RFJaoqYYnqRtfY0i7r8DZMZfjoIUQHSl4eDRdlEWPv93meXKIUIMYpeSBBOWmISeBqOyxu0Ca9Xlp5tRJziY84ntRy8j001RWUeH.s4EKHLPR9LotzmJgjMmnPl6riByR2nskjE0THyBszUF0tm9EZNz+blI6TUJVonPaPPNMuqtpBhXrUgs5wTUNzSEXJHjQ7PeEx7NJjOUbelBab69JlOxtChOG75iLyEDdyG.dE4gWAN3EAjxvAoEbfzGK1V1fMvxuGDO+Fw8zrnFcj.0NOTbnUXt+8uSDWAoZV46KcFcWCnxXNxVqRgUIkpWHWikVBT8lVjykLHCzTe4oVZj6S7XsK0ZK89Cz0fJYW1s+kAtbOMuILIcsTx1QR0j5KQjjybMllpH8HZ4fnoUPl1TUcLelYWt0PKKcMNV.orooIqqVej.f2SVh.GKWb4UIKWBKJiEUvhpXQMrnNVrNVrAVT.KVCKtOTfGNB4qwl9FrXGr3Hr3Xr36vhmgE6gEGfEGhEm3xeDGNhbSjp1Xw1XwtXwivhuBK9qXwiwhmfEMPo4v2eCq+sXwVXwywhVXwSwh8whUwh7XgIrQhdpjwxSBhWzfvqs811+xcz5xznwtfEhNbAHTS4MQFzLG1mp.ccnAXzRMyFb8IGN57K94UjrjxC09FlB3v49jxUafvLRZ9JJqaOKOhhfFXbaiScfjhEZDEEx5pnQxFMB1Gf8rK2yV7f9qT4B4ZDAyzKsLjdLGVKTqQzigGEA5Dzn1smMG4uPhFZQINS1ORCKpfiyZj3UE1ZyIlrGB92rNRenErvksyPMYKltV1t4H+js0FZY.jej9E16nJtJYiUAMJ7e3zhkPaHOxFcPmNf.iDfiw.uP2SSgdIPdAXKLWyOQ5Tp8RSPCFWh55XcgQJxV3xc2cco0KUuStFtc1Ahu.yFPxJGQksjz5pRydBfW3eV8Xlbpd+Fbrlxl6E3Ty1vDEVGcCRVC8K.jToAAO4AHVwyVaMP+3Ly4.t4dZGYStqB6DfxW3BaOxfl7rHrEMHQe4fGOjbcVaAH+K4F3ufLk8SqPx5S4Zjh4hjb+0o.n9xwKsYiyNdswSMzltjmRbrhjYuPSXj64iXn5Jq3YoEX7.h8FyUPd+hPCb34V7yjbtlF7heDHdWq0I67B9klqe03KmhRuAgLg36E49iwtz3T7gs1ach2dlWfJ9mKoNjBJ9GRvsA02rd45EAzfU1Z6sVeqJgl3ws23xUIiVkbwpjdf4esbg..qisciyV064u8LuJUqKL8+7O2uMe7Q9LP64G6I7Rb3YlyeLyepJj0WHXOl1c0wnOaZvjTAGyEqDIcJFRWroJ3xfpbLrNkMBrsJwdJCFrUGOsWVF7vXPsS.gWfWszDgs8N7j2Jq3yhO4d9BWYpK1S0v00y5UKcEtlD1s895CMoaIopdJnx78aSOGlH79teicJOEO8jo479WpdK++tK+0i6xD5rD8UYuAH+knw2knyIu52CptB.1wMMBIYDe86AUWgzKJmU9RVVkIeFUIJhvCdezld9nKFgqpvDK2CbGSUxFCoRv16yofVj2IKjZaCRjjGPmYPGf43EknuZJyz9nGlmM3MZlV3c1Lsva0Y5UorqbdO4guXIaJYlaZOucWSi5JptlD04imZmWaP45jkvtkqUozVvlPuHtJRFm00fN5sV9yiSfHp36WziYQGOTwGSex33KKaYfjbSQB3esdn35Qp7ugQRiX+uc69aMhPkeeRzqCf5uXifLFxv00Rw4Zy82PfgkgHjgiOTobf.C9zmevPyd16IuJxYt20lO4jW+zefep+YS0lMGwfZMzPyKFVnDDBdUb4YXyGzAGh7JTS6aVELjty7klHmyGPVqHuOn37vxEn+Z71bC7kNMuJAVbbuwIGQUoRl12TSCPTtZIYCpjkSiGb5O.6lx5buR3oFmC1mL4hvseE3ZrP7DJmhfAZ.HBdQLd3mYeGgAgC8rs9EZY0zsnHI4BjFmillEz6eDcGi+9PCNlGYPeuNkwsRbUTpRKICGkY1pEJXaR.GFztjcv8t6obC2A4Qcf8ONq21phalTrI0QDLH5.ZhhxILWsbuRp.7xzTwaAmmo.QWqk28XU16NwsJX7AZc9EUUcYIURKl6NuVi2rMlob7IZh1.L9MYjIRmZhgv6vSGchyngqfNlMCTkF8TXp6Z031MdkDgSN3JBbcYzHjsifP9gPusF4NTYCOjwdsZd1OKwah5p+FuMyWk5r9hGb5abJb.rGboeZoEgtIg6pSmH6yUjpfIXTc6XbNEFypMr+oTCu0VOBExrPvmufX7OeA9G+grycvkiPcs8zXVGLfpE2CEQv819JHjYEWTAjZY+jHtq6Shv4duKvTDxrnnSkhB1PFZ3NdOAHg2.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.QivS9mvIgzjaFVSBsDF8+VwMUUI9MDF+aToXkBaTujvDKAgzoBS9kE+Qh6qqLTUxJ3G5L90c61ACLb3+5hwufXMSl0H9u962Ze8y2TH9whGxrj6EMFmKBLJH7NAitey3en3Nc5Pks7A3Bh69sua9.w4G9+nyv+IhssLnR8YZcaK0efJ04CDeIQ2ZEea7o6O3F+o6enAUUWRoM6G4H60MaMDzQFAa8e0zdn1ru9Ps.ikKxOhNfJYAKy7vq4QG8HC8gCBy0O+PaihiMfsIfpfuiCznftN.saYnaZ1AlN1xxje5e3PitntxukinmSMLC11SG1GVu0fc+36iWlL3yczjhquL48krLXWxSs8nT3XI6034DcpWLT8RgpWNT8JgpWMT8ZgpW2udFwf1eu2M6EHbeoA1N33nrEy0JC5yoE9ejEFqVsGZtefFh3m5f67t5WegEtYatl9OND+JvcYferHVzCisY3pyNZmCaCgVPL9IhaS6HMT0xq0RAP495Z5C5oqwjCZzCFwc6RM3wdjSnMsrf8b9s7oMceur4uD1m.QDkLBtW9MRWT7M9GNiHWu98hNvkf9wHIYcKUMylZHu4uQg7dqi2ae3uTU0cW2.gj13GHvuvWm+.QaW2DLR6rBpNekYc8hhIBg5ZCg2ko7A7lCeQcbpW.qi.pMUSwtx+ENb6rnWzQryhdcJH6IJXt4dt8KsSl4oZXnC6L4Tg3tp7lzlPRDHjfHZBl1Kp8wnPY7ilK0uOHDQwh4KjNSj9RxF5uT14UVBmNuucKvDQy9GunEE2GqSh3EkpODR6kxxAE0DLV51xX4aKiUtsLV81xXsaKi0usLt90yHlwwlCsz663uUPX+C2wwFMyNisQmW3+ArF9WGO
Minimal
HiseSnippet 2430.3oc4a0sbaabEFTRv0h0NMNStnWzNChlNYnFqngjfTjpJ1lhRTtr1ThQTVMIZbTVBrjbs.WvAXorYynYzE8EnuI8QvOR4MncO3GxEfD1RDJDISwEGo8myY+1u8r6dVvEMsL0v11lVRoV8jQCvRodfbqQTVu85gHTo56Kk5OI+B7n1lHK88LoLKSCk2RX8LGxTdUcopiFfrsw5RoRs7yAMRs5JRNO+7yphLPTM7jrjjN0jngeIoOgMI2lUdAwv3.jN9DRegZWnRcMS5dlFlC4naY4rRCPZWf5hODAUaIYoT2qlNgYZ0hgXXaoTqT0TeTqdluk5V+SI1j1FXHQNoVbC4l8AlF5.hgbk1qGwPuoOKXKIkRt4DNYYWN4ykaPzIiyeB27oNEnLQCQ9H0RAg2xAfWNQ3kU.dy.RoDfzJtP5QxszrHCXSJAvyuWtNkgs5f3ztHTbqqzR+66KCChXJay9nKvGXwSLViLaUH6FJ4Kkc8cRmlS81LkKQVJUUdhhuRcwrcML1yr+.SJOscl0pNjwLoqMQkKvi101lzk1Gp.W2yRqveV66WaCk09VPrGHNEDUAwgfnAH1.DaxEtZrKjrEH1GDG.hmCh+FH96f3Ef3kfXmwp8MPx+AHpAhiAwIf36.wq.QcPbDHZBhy3hndbsYNnZ4AgJHJ.hhfXKPTBDkAw1fHKH9JP7DPXycawsQVqExvudGEQZ1eR140ncITbPReLimYsP0CX9PYsoMn.0dXerNunlVb+CrclfCLqCsdXE0QLzlD6c0XjKADjaVUha8FlCsw6gLLZymQloyPJWASZF7kbKutxO4vYjNJtYrolAQ6Br95tboaovCqGwdplbFY9LkrJ+UNVbT7pzWMwWC4TAN.c7yd8No6XZojgvSjcGEhxWqTPk+2G+XeLMo9aNXncuLfm9UyrG5yaS2IMa+Fwt3W7A4v0UrvrgVTfGAMfAZ93PcpN9cbTFbHYSBj8QcflXScrsybVdSttaOebSN1.OU4qxst.gV8L+hdMzGNEYLDmIGejVYlUQqGh1Eqmwy9AInI0yyOXJx2yo8XrAFY6r1sEupdrflElunmSlG09MXMVFW+TwZCXz4elljmeF9i3A3aTgNJg2CeBuOp7keoxW3r2G237R1muPcFpIeoadUVmafIrnKSRDX4rquyLJdFLbHVFZbNTGW7UB77TzECY4RXYJlMqyvZZKbWkZvrr552v4.90NvL.2QTmNaXqjywJ7+luT.63TYWiPbMR3Ft5lFXZWVu.pQnFvpa9izJlzpdgUjQyeQtM39VbRUbLyvTCYnTk3Mwo534JiUZceO.+gXh3bjfCNPwS0D9O9DzYtsFL.45ULv.M5Pdu1yovq3MTxACFALyUJXCa7Lrsqg.8OpSmpi7ZpLgaxvlaJ2izhdfd723YQSnT2wE3QfugtvQ7oXo+ozqxKVIbQc5Lyx7LoA26aVE65W9ATLCcX+1XK+wV+JxCnIXTRxQGkjXPbZtaNJTQSZcJgcz.LMpP6j71QkGQ0i8PEupLm3o9Du3obimQhvCaZUY2D4jbfLOi64GGqzsP87wSc03odg3odw3o9VwS8RwS8xiUek4Q8smO0S661jMl5mKl5mOl5Omddi0uPL0uXL0eqXpeoXxekio9wz+Ke130+ymKl5mOl5GS+u7wz+KeL8+xGS+u7kho9kio9aGO8Uio+mZL8+Tio+mZL8+Tio+mZL8+Tio+mZL8+Tio+mZL8+JDS+uBwz+qPL8+JLK+uWUee9oegWInWrr73aGfsXDHz4T6iujngceAgqJuO19Bl4.daM90Gwy1scen+qODQwFNM6ijCcNao2ItyynIIdZk2RzY8ljw+pROLoaOg2oKoB+vHlu0+HIbr8Gj20vPYRFDFtu+618AxExWNa4xkJtspPA4cKoz1pkJnVr.Pdi6F2KptwCkGPMN2ry4sYTagtv66VQnKTOTWnxfo5B5UfCILtA+c2fiIHPX6KzZWeZEhcCS3c7frF4d3jPLXgJCPV7xEZvfcDoaETxKBkCSTnnJBkSRTnTPDJeWhBkhhP4GRTnrk.TtFknPojHqnmnPorHqzIQgx1hrBIQfhvQZem39.iDWkYQik.q2VOYwh3BtW+MIKVDWwk6hjnXQbI2qOKYwh3ZtU9wjEKhK5991IKVDW0sBNYwR4HiXawiEw0cq7lDEK4CrtagJABFeQikHiyMAvRjA5l.XIxHcuqwx8uIu5qHB08t.KgOozSqbKYpHi9MAF0hL72D.KQF+aBfkHC.NAvRjQ.u3whp3JwWeQxhk.qD+WDwBmlVvXIejmLXwiE0HOYvhGKEh7jAKdrTLxSFr3wxVQdxfEOVJE4ICV7XobjmLXwiksi7jAKbrTHajmLXwikbQdxf6Xrb+axOxf.uXbGikvQ580UtknSMx3y+gO1tk7fwlNPyaA2IG7WH3kn1d+BAokadbsVsTZT6C7Kbfon1FtWR7rRRSe8q+T4Fl5CMPrf2Fb3Jv6U.gyEhWAa3ZVSsIrQhWQ96rqH9MEhORtIgo0a1XboYfQIoeQvn2Eq+gx05zAqwl.vUjO3a+k4VzK17+Y2l+yjawrvn9DZ2Vn9CLvt2h9zxdoxcW78ML3F+8MzzBaXhzaQ9mBU68UpNjyQVAy8+Twoo1su4PZf1xC4GiGfQL9vrH7pb7wO2xb3fvZ8yOywo3DKj1EbpPrfinXNWGnt6YYZa2g2cbrksX2u4Pqt.WMImiwWhsrCl2gC6yGuoTrAbc+RkB9YMswv3KQqAhYQBLszoUxdBxYLdIY2z4BkNenzpgRWHT5hgRuUnzklj1kPafF.dFvGcRn6q38tY2WQtAb9QJEpYUR2wF2MmOxWlx89U2WlxuAVYLvGOyp9XrEAH9ZzK4y334.X7yj2G2AMzf4ma9.nrgI0bPOSJQKn+M2esaWrkH1mYGZWFiO8ZRNedEuK2s3Q3dIghQVAm1dq3hb25OjnYNd8GkcgqBrjkxuc2Qa4+uYGsODE8Id6mozB9BB9U3X3CjcV0UA1jbQBuiMGx3a34uoiLemoV7ci0vh6OsDbscbSmERCfnElp6j3+xe7JLm+lYPg47KTRy2T79i2+6bEdRs73XLSsjAeaRCQWTa9d9.j3a3rPPYejlk44Zt2NI.q22IGNJoNeskqJ2.RqLi6jbe99LmqoEzTSoX94UQ04UwByqhEmWE2ZdUrz7pX4OthPX.6NjY12cwQIoFMq45.lp1XGvkk9e.aNpl9