RyanM415 built an Teensy 3.6 powered car display using an on-board diagnostics (OBD-II) adapter from Freematics and a 7″ TFT LCD from Adafruit. The display has two pages: one shows off when the car is in drive and the other for when it is in reverse gear. During driving mode, it displays the RPM, MPH, engine load percentage, battery voltage, cabin temperature, and engine coolant temperature. And in reverse mode, the Arduino IDE compatible Teensy 3.6 reads an animated bitmap image of the car and displays it along with the readings from the backup sensors.
Author Archives: R-B
This DIY Ultrasound Imaging development kit is kelu124‘s entry to Hackaday 2017 prize and is equipped for imaging, based on two ad-hoc ultrasound boards, a Raspberry, a custom ADC, and a motherboard.
This HSDK has for objective to:
– consolidate existing hardware research;
– simplify and lower the cost of the kit;
– permits benchmarking of ultrasound systems;
– introduce a simple API to control hardware;
– have a server which provides both raw ultrasound and data standard DICOM files;
– have a kit that can be used for pedagogical and academic purposes – not to mention people who want to understand ultrasound!
Andy Brown is fond of beers and he loves homebrewing. To automate the temperature control required for fermentation and conditioning process, he designed a process-controller based on Arduino processor that allows precise switching of three relays to control the heaters, fridge and fans that are the parts of the temperature controlling mechanism in his brew fridge. The controller also features a triac for phase-angle dimming that is helpful for proportional heater or fan control. The device connects to a host PC via USB.
An IoT thermostat project that features a touchscreen user interface using a 3.2″ TFT display. The thermostat connects to EasyIoT Cloud and can be controlled over internet using a WEB interface or native mobile application.
Stefan designed an IoT enabled, compact and modular, 4-wheel drive robot platform powered by ESP32. It is controllable over WiFi and BLE.
As controller board an ESP32 Thing board is used this can be programmed by the Arduino IDE and allows even OTA updates. It isn’t the cheapest but offers a compact size and includes a LiPo charging capability (Which I managed to blow off by attaching the LiPo in reverse polarity L). As sensors the robot contain a BN0 055 absolute orientation sensor, a rotation encoder for both sides, four proximity sensors in the bottom (line follower, gap detection) and an APDS-9930 proximity sensor in the front to “see” obstacles. Of course a beeper and 2 head light LED’s are not missed either.