Despite concerted efforts to kill them, serial ports are alive and well, especially in embedded system. True, most of them end in a USB port, these days, but there’s still a lot of gear with a DE-9 (it isn’t a DB-9, despite the common use of the word) or a TTL-serial port lurking around. [James…
Building on the work of other Citizen Science efforts, [doctek]’s entry for the Hackaday Prize promises to detect pollution, identify chemicals, and perform other analyses with a simple handheld device. It’s a spectrophotometer, and [doctek] is putting some real engineering into this build. A spectrophotometer is one of the simplest devices able to perform spectroscopy,…
Steven Merrifield created this oscilloscope probe board:
Here is a basic high frequency differential probe ideal for monitoring signals such as RS-485, CAN, MIL-STD-1553 and so on
sjm has shared the board on OSH Park:
The 2016 Hackaday SuperConference is coming. Now is the time to submit your proposal for a talk or a workshop at the world’s greatest conference about hardware creation. The SuperCon is an unparalleled opportunity to present on a deeply technical level where you can be certain everyone in the audience is following. All of those…
Kris Winer writes on Maker.io about his new design:
This is a small development board for the ESP8285 (ESP8266 plus 1 Mbyte embedded SPI flash memory) which includes an FTDI FT230X USB-to-serial converter so Arduino programs can be flashed via the USB Micro-B connector. The board has a MAX1555 LiPo battery charger, a 3.3 V MIC5528 LDO supplying 500 mA for plenty of power, has reset and boot buttons for easy programming, has a blue led on GPIO15, green led for power on, red led for charging indication, and yellow and orange leds for RX/TX.
Available for $24.95 on Tindie.
PeskyProducts has shared the board on OSH Park:
Don’t worry, the rhythms themselves aren’t random! That would hardly make for a useful drum machine. [kbob]’s creation does have the ability to randomly generate functional rhythms, though, and it’s all done on a breadboard. The core of this tiny drum machine is two Teensy dev boards. One is an FM synth tuned to sound like drums,…