This blog post is about our current EV3 robot we're planning to use in the 2023/2024 FLL competition. Some features: 2 large motors for steering. 2 medium motors for attachments. 2 colour sensors for picking up the white and black lines, also used for line squaring. 1 gyro sensor. To enable attachments to be changed as quickly as possible we're using gravity to keep the gears connected, i.e. you don't need to fasten anything to the robot. Every attachment has 2x 12 tooth double bevel gear (part 32270) which comes in contact with the 2x 20 tooth double bevel gears (part 32269) on the robot. The medium motors are horizontally aligned on the robots, but we use 12 tooth double bevel gears to convert that to vertical alignments. These in turn are connected to 20 tooth double bevel gears, and the attachments in turn connect to these 20 tooth double bevel gears with their 12 tooth double bevel gears. The complete robot is modelled in Bricklink Studio 2 . You can download the rob
To add another wifi access point to my existing network I've used an old Linksys WRT54GL. I've installed OpenWRT 10.03.1 because later versions doesn't fit on the 4MB flash. First this router should only act as an access point on the existing network, i.e. we don't need any NAT or a new network subnet with it's own DHCP server set up. We'll connect this router via an ethernet cable to the existing network. Because we don't need a WAN port we can first set up the switch that all ports all equal. Then secondly we can simply bridge our ethernet ports to the LAN interface. Your etc/config/network should have these sections: config 'switch' 'eth0' option 'enable' '1' config 'switch_vlan' 'eth0_0' option 'device' 'eth0' option 'vlan' '0' option 'ports' '0 1 2 3 4 5' config 'interface' 'lan' option