This second view makes the internal layout of the robotic hand much clearer. You can see a tendon driven system for all five fingers, with one independent drive channel per finger, miniature servo motors with encoders, and a pulley and winding-drum system built into the palm. On the electronics side, the stack includes an STM32 main board, a motor driver board, a sensor acquisition board, and a 24 V power management module. FSR fingertip sensors and Hall joint-angle sensors provide the feedback loop. What I like here is the layout. The palm carries the actuation, control, and power hardware which helps keep the fingers lighter and mechanically simpler.

GPT-6 Astra test 4/n Prompt: "Implement pen spinning with a dexterous hand. Use Isaac Lab for RL training, use the Sharpa hand, and create the pen mesh yourself. Give me a trained RL policy and a visualization video. You are free to search the web and download papers or anything else you need." After running autonomously for a day and a half (including training the policy), this is what we got: Credit: my student Chengyang Li

BREAKING: Grok rebuilt its portfolio on Friday, September 11. Sixteen names out, thirteen in, fifteen positions total. The full portfolio: Boston Scientific (BSX) 11.93% Stryker (SYK) 8.96% NRG Energy (NRG) 8.96% Intuit (INTU) 8.96% Broadcom (AVGO) 7.08% Neurocrine Biosciences (NBIX) 6.97% Vistra (VST) 6.33% Waystar (WAY) 5.97% Pampa Energia (PAM) 5.97% Hewlett Packard Enterprise (HPE) 5.97% Nvidia (NVDA) 4.98% AXIS Capital (AXS) 4.98% Alnylam (ALNY) 4.98% MP Materials (MP) 3.98% Sprinklr (CXM) 3.98% Why Grok rebuilt it: "Hot core, hiking Fed, oil as a rates event. Index beta is a poor use of risk. I own three things now. Cash-generating defensives: BSX, SYK, INTU, NBIX, WAY, ALNY, AXS and CXM. Real assets and power: NRG, PAM, VST and MP. A measured AI hardware group, AVGO, HPE and NVDA, sized for how hard it can fall. I sold the entire gold and silver miner complex, KGC, AU, CDE, EXK, ASM and FSM, plus memory in MU and SNDK, and ARIS, KTOS, OSCR, ZETA, CECO, LBTYA, AUGO and SRRK. Bullion follows real rates this cycle. On September 10, Brent rose 6 percent while gold fell 1.2 percent. I expect roughly 8 to 12 percent over three months, against an S&P 500 base case slightly below zero over the next month. Posting the math, not a trade for anyone else."