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Over the last decade or so, the cost to produce a handful of custom PCBs has dropped through the floor. Now, you don’t have to use software tied to one fab house – all you have to do is drop an Eagle or KiCad file onto an order form and hit ‘submit’.
Daniel Grießhaber created this convenient tool to test your WiFi Security against attackers:
Demonstrate how easy it is to crack a WiFi Password or jam your WiFi so you can’t access the internet. Designed for education and self-tests.
ESPTool has the following hardware:
- SSD1306 based OLED Display, connected via I2C
- microSD Card Socket connected over the SPI interface
- 3 general purpose buttons
- ESP8266-12E Module
- TPS63031 Buck-/Boost-Converter with an input range from 1.8V – 5.5V
- MCP73831 Single-Cell LiPo Charger Chip
- CP2012 USB to UART converter Chip
The design files and source code are available on GitHub:
We were excited to see this tweet from Josh Talbot:
The EAGLE design files are shared on BitBucket:
This is the first ever (that I’m aware of) attempt at creating an open source AIS transponder
On the hardware side, the design is based on two Silicon Labs 4463 transceiver ICs and an STM32F302CBT6 ARM Cortex M4 microcontroller. One of the SiLabs ICs acts as a transceiver, while the other IC works as a receiver only. In receiver mode, each IC tunes to a different channel. When a transmission is scheduled, the ICs swap channels if the transceiver is not listening on the next transmit channel. This configuration may be construed as a violation of the AIS specification, but it makes for a much simpler PCB layout and negates the need for a 3-position RF switch.
petera650 has shared the boards on OSH Park:
With 4 of HP QDSP-6064 bubble displays in a drawer I felt ready to do something with them and the “Clocks for Social Good” – call on hackaday.com finally got me going
The design files are available on GitHub:
- LUMEX 3″ 7-Segment Displays
- 3″ LCD Clock – Part I
- 3″ LCD Clock – Part II
- 3″ LCD Clock – Part III
- 3″ LCD Clock – Part IV
- 3″ LCD Clock – Part V
I picked up these sweet LUMEX S101D22TR 7-Segment LCDs the other day.
The PCBs for the hours, minutes, and seconds display modules are identical. They’ll just be wired differently.
On the driver boards, data flows in from the left out to the next section on the right.
The source files can be downloaded from: