Robots in Ancient India at time of Raja Bhoj
It is surprising that at the time of Bhoj , we has Robots

Raja bhoj in his work - Samrangan Sutradhar talks about use of robots

He writes
”अथ दासादि परिजनवर्गेर्विना तत्कृत्याना सर्वेशा यथावन्निर्वहणाय कल्पितस्य स्त्रीपुरुषप्रतिमायन्त्र घटना -
If there are no servants and family members at home, then to do the work, StreePurush Pratima Yantra is useful , lets expalin it

दृगग्रीवातलहस्तप्रकोष्ठबाहूरुहस्तशाखादि |
सच्छिद्र वपुरखिल तत्सन्धिषु खंडशो घटयेत् || -समरांगण सूत्रधार ३१/१०१
Such instruments include eye, neck, bottom-hand, forearm, hand-arm, fingers. one should also pit the needles and various parts of the body including the interior

शिलिष्ट कीलकविधिना दारुमय सृष्टचर्मणा गुप्तं |
पुंसोsथवा युवत्या रूपं कृत्वातिरमणीयम् ||
रन्ध्रगते: प्रत्यंग विधिना नाराचसगते: सूत्रे: – समरांगण सूत्रधार ३१/१०२

The keel used in combining the organs must be very smooth This composition will be wood BUT leather will be imputed on it to give it a female form,This form should be absolutely delightful. After the construction of this body the spills should be joined in a thread

” ग्रीवाचलनप्रसरणविकुज्चनादीनि विदधाति |
करग्रहणाताम्बुलप्रदानजलसेचनप्रणामादि || – समरांगण सूत्रधार ३१/१०३

Such a Yantra Manav drive its human neck, fold arms, perform strange things, Irrigates water and also do Namaste.

आदर्शप्रतिलोकनवीणावाद्यादि च करोति |
एवमन्यद्पि चेद्दशमेतत कर्म विस्मयविधायि विधत्ते |
जृम्भितेन विधिना निजबुद्धे: कृष्टमुक्तगुणचक्रवशेन || -समरांगण सूत्रधार ३१/१०४ -१०५

That instrument shows the mirror to the guests , play instruments like veena, it perform all these works , it works on instruction of operator using a cyclic method.

अनभिमतजनप्रवेशनिरोधनाय द्वारदेशे स्थापनीय द्वारपालयंत्र –
गृहार्थ द्वारपाल का वर्णन –
” पुंसो दारुजमुर्ध्व रूपं कृत्वा निकेतनद्वारि |
तत्करयोजित दंड निरुणद्धि प्रविशता वर्म्त || -समरांगण सूत्रधार ३१ /१०६

Give a stick to his hand & let it stand outside , so that it can protect from unwanted trespassers entering to the house

खड्गहस्तमथ मुद्ररहस्त कुंतहस्तमथवा यदि तत् स्यात |
तन्निहन्ति विशतो निशि चौरान द्वारि संवृतमुख प्रसभेन || समरांगण सूत्रधार ३१/१०७

If you give sword and spear to this Yantra Manav , it can beat the thieves, and intruders in night.

So if you think about all these working , can conclude it likely to be a robot , which can perform several things.
Such advance knowledge we had only 1000 years ago at the time of Raja Bhoj.